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RESIDENTIAL HVAC CASE STUDIES

Find a home similar to yours to see how we solved heating and cooling problems.

We think the easiest way to tell you what we do is to show you what we do. Serving the greater Boston area, we've done installations from Providence, Rhode Island to Maine, and have served New England Homeowners for over twenty years.

So find a home or a neighborhood that looks like yours and see how we helped the homeowner with their home comfort problems. If you don't see your neighborhood or your type of home here, please click here to let us know where you live and we'll see if we have a story near you.

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Heating and Air Conditioning Examples in the Boston Area

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From Tudors to Colonials to split-level homes and more, we've installed ductless HVAC systems in all types of single-family homes, condos, brownstones and apartments in and around the Boston area.

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Homeowner Expands Dutless Hvac In Arlington, MA Colonial

Bobby-houseHomeowner Expands Dutless Hvac In Arlington, MA ColonialOur homeowner knew how effective ductless cooling could be. Already, he had installed two ductless units, or air handlers, in his colonial home for air conditioning. Now, he was ready to expand his system.

Previously, we had installed a mini-split system to cool a few rooms.  The home, built in 1860, didn't have central air. So, our homeowner used window air conditioners.

However, the window ac’s used a lot of electricity. They were loud and a hassle to clean and install every spring.

When we installed the two air handlers with a heat pump, our homeowner got better cooling and paid less money for it. And, he didn’t have to stop there.

Like many older homes in Arlington, MA, this colonial home had gas-fired forced hot water heat. It traveled through pipes and circulated via radiators.

The biggest drawback to radiators is uneven heating. It’s common for a room to have cold spots as the heat seeps into the room. And, as with many older hvac setups, entire rooms can end up colder than others.

Fortunately, a mini-split provides excellent heating as well as it cools a house. We could add that feature to this home without overhauling our previous work.


Problem: A colonial home in Arlington, MA had forced hot water heat that created cold spots in the winter. It also used window air conditioners in some rooms. But, they were loud and inefficient.

Solution: Added two new ductless units in bedrooms. These accompany a similar system handling other parts of the house. Also installed a new outdoor heat pump for the new units.


Adding ductless heating in a colonial home

Ductless heating can eliminate cold spots in the winter. And, they use less energy than other hvac solutions. Here, we were able to add air handlers that supplemented the existing radiators.

The process starts outside with a heat pump. It generates heat or cold air. From there, piping or tubing transports the air throughout the house. On the other end, the units, or air handlers, distribute the air in the rooms where they’re located.

In these ways, it’s similar to how ductwork and vents hooked up to a furnace and central air conditioner. But, there are some significant differences.

First is the piping. The tubes are made of flexible plastic and are only an inch or two around. These are important distinctions from bigger and bulkier ducts.

Our installers run the piping through the walls in between rafters. They’re so small that they don’t need to carve out space in any rooms or closets to fit it in the house. With the plastic tubing, we can run it quickly and easily throughout the home.

That process makes it very easy to add a mini-split for heating alongside an existing system. It’s significant when it comes to heating. Our homeowner had the option to enhance his current setup rather than overhauling it.

Ductless HVAC installation in Arlington, MA colonialUsing ductless hvac for zoned heating and cooling

Our homeowner’s new system is an excellent fit for his older colonial home because it provides zoned heating and cooling. That means each room or zone is treated separately from the others.

This way, our homeowner can add warm or cold air exactly where it’s needed and not in spots that are already at the right temperature.

Creating zoned hvac is possible because each unit has a thermostat. That way, each one works until it treats its zone correctly.

Compare that to a central system with one thermostat. In that case, there’s one gauge, usually on the first floor. The system turns on and off based on that measurement. But, the upstairs ram can be — and often are — warmer in the summer and cooler in the winter than the downstairs rooms.

When this happens, you get uneven hot or cold spots. That’s because the system isn’t working long enough to treat the upstairs rooms. If you set the thermostat differently to account for them, you’d end up overheating or overcooling downstairs.  

That was the problem our homeowner had with his heat. The bedrooms got some warmth, but not enough. So, we installed new air handlers in those spots. Now, he sets those to the temps he wants. When the main system shuts off, the units pick up the slack.

In the summer, those same units provide cooling. And, our homeowner can customize that, too. If he knows he won't’ be in those rooms during the day, he can turn them down. Then, he can crank up the ac at night.

Ductless units eliminate hot and cold spots in Arlington, MA colonial homeSaving money with ductless heating and cooling

Our homeowner’s biggest concerns were eliminating cold spots in the winter and getting rid of his old window unit air conditioners. His new system does all that — and it saves him money in the process.

A mini-split system such as this one uses less energy to provide the same hvac services as more expensive setups. That’s why they’re certified as Energy Star according to federal standards.

That certification itself helps save money. As in many other states, there are groups in Massachusetts that encourage people to use energy-efficient appliances. And, they offer cash incentives to those that do.

We helped our homeowner apply for rebates from the advocacy group Massachusetts Clean Energy Center and Mass Save, a consortium of energy providers in the Bay State. Between these two, he got $1,500 to put toward the equipment and installation.

Now, our homeowner also sees savings on his monthly energy bills. He’s now gotten rid of all his old window air conditioners. Since the units provide better cooling with less energy, he pays for less electricity to cool his home in the summer.

He also sees significant savings in the fall and early spring. Previously, he’d have to turn on the radiator heat when it got a little chilly. And, he’d leave them on as the weather got warmer.

Now, the units alone can handle the heating during those transitional times. And, in the winter he sets the radiator thermostat lower than before. This way, the more efficient mini-split makes up the difference.

Between the upfront savings and lower energy bills, the new system will pay for itself in a few years.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: A colonial home in Arlington, MA had forced hot water heat that created cold spots in the winter. It also used window air conditioners in some rooms. But, they were loud and inefficient.

Solution: Added two new ductless units in bedrooms. These accompany a similar system handling other parts of the house. Also installed a new outdoor heat pump for the new units.

Click here for the full story.

Bedford, MA Replaces Old Heater With Mitsubishi Ductless System

Bedford, MA Replaces Old Heater With Mitsubishi Ductless SystemIt was time for a homeowner in Bedford, MA to upgrade his heating system. He had a 15-year-old furnace that wasn’t cutting it anymore. He called NETR looking for a system that would provide more heating but also cost less to run.

Fortunately, that wasn’t like asking to have your cake and eat it, too. Thanks to new ductless technology from Mitsubishi, new hvac systems can provide more heat while using less electricity than older setups.

After a decade and a half, it’s common for furnaces to start showing their age. On average, they’ll last up to decades. But, that’s in warmer climates. In New England, where the winters are colder than, say, mid-Atlantic or West Coast, heaters work a lot harder to maintain a warm temperature.

When this unit started having trouble keeping up, our homeowner wanted to replace it. Doing so sooner would mean avoiding a big problem if it broke down in the dead of winter. It also gave him the opportunity to pick a new system that was right for his home.

He’d heard a lot about Mitsubishi ductless HVAC units. They could provide the heating he wanted at a price that worked for him. And, he saw that we were the number-one Elite Diamond Dealer for these products in New England.

Once he called us, we quickly got to work designing a system, especially for this cape home.

Problem: The 15-year-old heater in a Bedford, MA cape home wasn’t working as well as it used to. The homeowner wanted to lower his energy bills and get more heating capacity.

Solution: Installed a Mitsubishi ductless mini-split system with three units and an outdoor heat pump.

Better, stronger heating with ductless

Our homeowner opted for a new ductless heating system that offered 30,000 BTU. This was an increase over his old furnace. That meant the new one would do a better job of generating enough heat for the size of his home.

BTU stands for “British Thermal Unit.” With this measurement, it takes one BTU of heat it takes to raise the temperature of a pound of water by one degree.

Typically, an hvac tech determines how many BTUs of heat a house requires is based primarily on its square footage. From there, they also take into account the structure’s installation, windows and other factors.

Already, our homeowner knew he needed an upgrade to 30,000 BTU. His previous system was less powerful than that, and never quite did the job.

Even if he had opted for a new ductless system at the same strength as his old one, however, our homeowner would still see a difference in quality and on his energy bills. That has to do with how the Mitsubishi mini-split systems work.

The process starts with an outdoor heat pump. Using a heat transfer process, it draws whatever heat there is outside, amplified it, and sends it indoors. It does so through flexible plastic tubing that our installers snake through the walls of the house.

Unlike ductwork, those tubes are sealed tight. No heat escapes along the way.

At the other end are the ductless units, or air handlers. We mount those high on a wall, mostly out of sight. They’re responsible for distributing the heat and also drawing in air from the room to better circulate it.

In all, these components work better than older systems. The HVAC units are designed to push the air much more powerfully than wide-open vents. And, all the heat goes straight to the units.

Still, our homeowner made the right choice in upgrading to 30,000 BTUs. Now, he can focus his system on providing just the right amount of heat where he wants it when he wants it.

Mitsubishi ductless unit installation in Bedford, MA cape home Customized heating with zoned hvac

The next advantage of a mini-split system is zoning the heating. In this setup, each unit has a thermostat built into it. That means our homeowner can set each one individually. Now, each air handler is responsible for a different room, or zone.

This setup eliminates cold spots in the house. Previously, one thermostat controlled his entire house. It was located in the living room. However, not every room started out at the same temperature.

That meant that once the living room was warm enough, the heat turned off. But, the bedrooms were still too cold. If our homeowner raised the thermostat to compensate until the bedrooms warmed up, the living room would get too hot.

Now, that’s not a problem. When he sets each thermostat to the same temperature, each air handler works independently to achieve that. The one in the living room usually turns off first, because it’s the easiest room to heat.

Meanwhile, the unit in the spare bedroom keeps working. Since it gets the least amount of sunlight, it takes the longest to warm up. So, just that unit stays on.

From there, our homeowner can tweak his system even further. Let’s say no one’s using that second bedroom for a while. Why bother heating it? He can turn down just that thermostat.

At the same time, our homeowner goes to be around 10:30 each night. At that point, he wants his room nice and warm. But, the living room doesn’t need to be quite as toasty. So, he programs that thermostat to a lower temperature at night.

This way, he gets the heating he wants, where he wants it and when he needs it.

Outdoor heat pump for ductless mini-split in Bedford, MA cape Cash rebates and lower bills with ductless heating

Now that the new ductless heating system had this cape home as warm as our homeowner wanted it, we focused on his second criteria: saving money. We achieved this with some upfront savings and lower bills from there on out.

We’ve talked a lot already about this mini-split’s efficiency. These systems work so well that they’re rated as Energy Star appliances by the U.S. Department of Energy. That, among other things, makes our homeowner eligible for rebates.

In Massachusetts, two energy-advocacy groups use cash incentives to encourage people to install Energy Star appliances. We made sure our homeowner applied for them.

Both came through with money. Mass Save, a collective of energy providers in the Bay State, gave him $300 towards the installation. And, the Massachusetts Clean Energy Center offered $1,302

Already, our homeowner was paying $1,600 less for a new heater he’d soon need anyway. And, the savings don’t stop there.

Our homeowner was accustomed to paying around a certain amount for heating every month in the winter. Now, he pays less than ever before. Over the course of a year, he’ll save more than $100 thanks to those lower energy bills.

Those continued savings, combined with the rebates, have a significant impact on the sticker price. In fact, the system will pay for itself in just a few years.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Heating with Ductless HVAC

Problem: The 15-year-old heater in a Bedford, MA cape home wasn’t working as well as it used to. The homeowner wanted to lower his energy bills and get more heating capacity.

Solution: Installed a Mitsubishi ductless mini-split system with three units and an outdoor heat pump.

Click here for the full story.

Ductless Mini-Splits Offer Better Cooling For Arlington, MA Condo

Ductless HVAC Offer Better Cooling For Arlington, MA Condo Our homeowner’s converted three-story home is a great investment property. She lives on the third floor and rents out the other two as a second unit. Now, she was ready to improve her air conditioning.

Like many older homes in Arlington, MA, this one didn’t have central air conditioning. It wasn’t an option for homes until the 70s, and this house was around before that.

In many cases, an hvac company can add a central unit to existing ductwork. But, that wasn’t the case here. Our homeowner had forced hot water heat. It uses pipes and radiators instead of ducts and vents.

As a result, our homeowner used window air conditioners. They kept a few rooms in her condo cool. But, they didn’t do a great job.

Window air conditioners use more energy than other ac units. They also lose a lot of cool air and waste energy doing so. Plus, they’re loud and require maintenance. Our homeowner was ready for a change. Fortunately, she called the right people.

This condo was perfect for a Mitsubishi ductless mini-split system. We provided her with the power of a central cooling system. Our solution uses less energy and therefore costs less to run. And, it’s quiet and doesn’t require as much care.

Here’s how the new system worked for this homeowner.

Problem: A three-story house in Arlington, MA converted into a two-family home did not have central air. The homeowner wanted better cooling for her condo.

Solution: Installed a three-zone Mitsubishi Electric ductless mini-splits system.

Ductless HVAC for cooling an Arlington, MA condo How does a ductless cooling system work?

A ductless cooling system works by circulating air throughout the house using wall units, or air handlers. Each one works independently.

The process begins with an outdoor heat pump. Like the condenser for a central ac, it’s the part of the system that generates the cold air. From there, the air travels through small plastic tubing. This tubing delivers it to the indoor units.

What’s significant is that the tubing does the job of ductwork. That’s a big difference because it’s so easy to install. Our techs drill a small hole in the side of the house and then run the tubing through walls as if it were electrical wiring.

On the other end, the tubes connect to the back of the indoor units where you can’t see them at all. It’s a quick process. And, it’s much easier — and less expensive — than designing, fabricating and installing ductwork.

That makes it especially attractive for an older home. In this case, our homeowner’s didn’t want to make any major changes to the inside of their house. If we need to add ductwork, we would have to take up closet space and build out around walls to house it.

Instead, the only part of the new system our homeowners will see are the air handlers. And, they’re mostly out of sight. We mount them high up on a wall. And, they make virtually no sound while they’re working.

Zoned heating and cooling in an Arlington, MA condo with ductless units Using ductless mini-splits to create zoned HVAC

Another great benefit of ductless cooling is building a zoned hvac system. This setup separates the home into different zones. Then, it treats the climate control in each area independently of the others. It’s an improvement over a central air conditioner, where one thermostat controls the cooling for the entire house.

Every air handler has a thermostat. That means our homeowner can set them all to the same temperature. Or, she can set each one differently. It allows her more control over the climate control in her house.

Setting all the indoor units to the same temp provides even cooling throughout the house. That’s an improvement over one thermostat on the first floor. With a single thermostat, it’s typical for the rooms upstairs to be hotter than the ones downstairs.

It happens because the system shuts off once the room with the gauge is cold enough. But, the thermostat isn’t measuring the other parts of the house. With the mini-split, each zone gets treated by its air handler until the job is down.

Our homeowners can also set the indoor units to different temperatures. For instance, if she prefers her bedroom cooler than other rooms, she can set that one colder. And, they can let the air handler in the living room work less at night when she's asleep.

Outdoor heat pump powers Mitsubishi ductless units in Arlington, MASaving money with a ductless cooling system

A ductless cooling system does more than provide great, customizable climate control. It also uses less energy than a central air conditioner or window units. And, using less power means spending less money on monthly energy bills.

The Mitsubishi mini-split system our homeowner chose is certified Energy Star. That means it uses less energy than other ac’s to provide the same service. It does so in a few ways.

First, the outdoor heat pump uses much less electricity than a traditional condenser. A heat pump employs a heat exchange process that draws heat from the home, extracts it and sends the cooled air back in. It’s a self-contained, cyclical process that works mostly on its own with just a little bit of outside power.

Next, the tubing that transports the air is sealed tight. That’s in contrast to ductwork. In this case, treated air doesn’t leak out along the way, thus getting wasted.

Finally, the high wall units circulate air more efficiently than vents. And, since they are permanently installed, treated air doesn’t escape as it will with a window unit.

Of course, installing a mini-split is a substantial investment. In fact, the cost of the indoor units plus installation is more than introducing central air when there’s already ductwork. But, our homeowners didn’t have ducts and vents.

Fortunately, we found ways to bring down the cost through rebate programs. Across the country, clean-energy advocate groups offer cash incentives for homeowners to install energy-efficient appliances. We let our homeowner know about two such groups in the Bay State.

As a result, our homeowner received more than $2,600 in rebates just for installing this system. She got $300 from Mass Save, a collaborative of utility companies in the state. And the Massachusetts Clean Energy Center came through with $2,343.

Those incentives made a sizable dent in her installation costs. And, now she’s saving money every summer with lower energy bills. In a few years, the system will have paid for itself.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: A three-story house in Arlington, MA converted into a two-family home did not have central air. The homeowner wanted better cooling for her condo.

Solution: Installed a three-zone Mitsubishi Electric mini-splits HVAC system.

Click here for the full story.

Ductless hvac improves radiator heat in Arlington, MA dutch colonial

Ductless Hvac Improves Radiator Heat In Arlington, MA Dutch Colonial

Radiator heat does hold some benefits. It can heat a room very quickly. And, unlike forced air it doesn’t introduce pollen and other allergens into the home.

But, it’s not perfect. The system often creates cold spots in each room. Often, entire rooms are colder than others.

Meanwhile, with no central air, our homeowners used window air conditioners in the summer. The units were loud and expensive to run. And, it was a hassle dragging them out of storage, cleaning and mounting them every spring.

Our homeowners came to NETR looking for a way to improve their heating and cooling. But, they didn’t want to give up their hot water system. They just wanted to improve the heat a little.

The answer was a ductless mini-split system. It would completely replace the efficient window air conditioners. And, it would work alongside the forced water heat in the cold weather.

Problem: A Dutch colonial home in Arlington, MA had hot and cold spots in the winter with radiator heat. The homeowners also used inefficient window air conditioners in the summer.

Solution: Installed a Mitsubishi ductless mini-split system with air handlers in three rooms and an outdoor heat pump.

Ductless HVAC installation in Arlington, MADuctless hvac creates zoned heating and cooling

A ductless mini-split system creates “zoned” heating and cooling. This is in contrast to the entire house being controlled by one thermostat. Instead, it treats each room or “zone” separately. This setup eliminated hot and cold spots. It also cuts costs on energy bills.

The process begins with an outdoor heat pump. That's the device that generates warmth or cooling. Inside units, or air handlers, circulate the air.

Narrow, plastic tubing connects the heat pump and air handlers. It runs through the walls, out of sight, and attaches to the back of each unit.

So far, this works similarly to a system of ducts and vents. But where it changes is in the units. Each one has a thermostat. That means each unit works independently of the others.

That’s where the “zones” come in. It allows our homeowners to add cooling or extra warmth in the rooms that never seem to get treated well enough. And, you don’t have to overdo it in the areas that are usually fine.

This system also saves money on utility bills. That’s because it uses less energy to provide the climate control you want. When some units turn off before others, that’s fewer resources the entire system needs.

On top of that, Mitsubishi systems are Energy Star-certified. They meet federal standards showing they use less energy to provide the same service as comparable models.

And, that certification brings with it more potential savings. In the Bay State, two energy groups offer cash incentives for people to install energy-efficient appliances.

We made sure our homeowners applied for these rebates. And, they got them. One group, Mass Save, offered a $400 cash incentive. Meanwhile, the Massachusetts Clean Energy Center gave them $2,343. That adds up to nearly $2,800 off the cost of the home’s new equipment.

Now, let’s look at how that new zone system pairs with existing heat and replaces old, inefficient air conditioners.

Ductless mini-split system replaces window air conditioners in Arlington, MA Dutch colonial Ductless cooling replaces window air conditioners

A significant benefit of a mini-split in an older home is that it offers the power of central air conditioning without ducts and vents. This is significant for homes such as this Dutch colonial, that don’t have existing ductwork. Now, our homeowners can get the cooling they want without major construction on their house.

Hvac techs can usually retrofit a home with ductwork. But, that’s a very expensive process. And, that’s on top of paying for the air conditioner itself.

As a result, our homeowners put in window ac’s every spring. But, those portable units aren’t the most efficient option. They use more energy than other ac’s. And, they don’t cool as well.

They also waste a lot of energy, too. Since the units aren’t sealed in place, a lot of cool air escapes through the window. What’s more, they’re loud, block out sunlight and need a lot of maintenance.

Fortunately, today there are better hvac solutions available.

With the mini-split system, each zone in the house gets the climate control it needs. And, our installers didn’t have to charge hundreds of dollars more to design, build and install ductwork.

Instead, they just run the plastic tubing through the walls as if it were electrical wiring. And, since that piping connects to the back of the unit, our homeowners will never see it.

And, once installed the units themselves aren’t very noticeable. They sit high on the wall, almost out of sight. They’re also remarkably quiet. Even when they’re running at full blast, the air handlers make virtually zero noise.

Mitsubishi ductless HVAC installation in Arlington, MADuctless heating supplements radiators

You don’t need to replace your old furnace or radiator for the Mitsubishi system to be effective. It can still make a big difference working alongside the system you have. Adding the zoned effect helps create even temperatures and saves money, too.

The mini-split system uses less energy to generate heat than this home’s forced hot water system. And, now our homeowners use their old system less often.

For years, they started using their heater in the late fall. It wasn’t unbearably cold, but they didn’t want to get a chill. Similarly, they’d keep it on into the spring.

Now, they use only the HVAC units for those transitional times. Since the mini-split is meant to supplement the heater, this system won’t keep them warm all winter. But, it does the job until the temps get too low.

This way, they’re using only the more efficient system. That’s a few months of lower energy bills. Then, the mini-split picks up the slack in the winter. It also gets rid of cold spots and chilly rooms.

To do this, our homeowners use a lower setting for the radiators. Then, they put the thermostats on the air handlers to the temperature they want. The forced hot water provides most of the heat. Them the mini-split makes sure each room is evenly heated.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: A Dutch colonial home in Arlington, MA had hot and cold spots in the winter with radiator heat. The homeowners also used inefficient window air conditioners in the summer.

Solution: Installed a Mitsubishi ductless mini-split system with air handlers in three rooms and an outdoor heat pump. 

Click here for the full story.

Ductless HVAC Heats And Cools Sunroom In Andover, MA

Ductless Unit Heats And Cools Sunroom In Andover, MAOur homeowner wanted to make his sunroom comfortable year-round. The additional room was too cold in the winter and sometimes too hot in the summer. Adding ductless heating and air conditioning changed all that.

For a long time, it was difficult to get a decent hvac setup for a room like this. That’s because these rooms are more like enclosed patios. A space like this is outside the actual house with new walls built around it.

As a result, the heating and cooling system handling the rest of the home doesn’t reach it. Our homeowner was only able to enjoy his for a few months out of the year.  

It’s a shame, especially in a charming, rustic area like Andover. Nestled near Bald Hill and the Indian Ridge Reservation, it seems like just about every backyard is a window to nature.

Adding climate control would make it much easier for our homeowner to enjoy the scenery. After researching, he realized that ductless heating and air conditioning system would do just that.

He chose NETR over other hvac companies after reading our excellent customer reviews. And, he saw that we were the top Elite Diamond Dealer for them in the New England for Mitsubishi mini-splits.


Problem: The sunroom in a colonial home in Andover, MA had no heating or cooling.

Solution: Installed a single-zone Mitsubishi Electric ductless mini-split.


How ductless heat and air conditioning works

Ductless heat and air conditioning work similarly to a central air conditioner. In both cases, an outdoor component generates treated air. Then, the system distributes that air throughout the house. However, how each one does that is different.

With ductless, the process starts with an outdoor heat pump. It removes heat from the air in the summer. In the winter, it attracts what little heat there is outside and magnifies it.

This process relies on naturally-occurring heat exchanges to do most of the work. By contrast, traditional heating and cooling methods use electricity or natural resources to generate the heat or cool the air.

But, the most significant difference is how a ductless system circulates the air. From the heat pump, the air travels through plastic tubing that fits in between the studs of a wall. Then, it enters a room through an indoor unit, or air handler.

The indoor unit takes the place of ducts and vents. Our installers snake the tubing through walls like electrical wire. Then, we just attach the tubing to the air handlers, which are mounted high up on a wall.

Ductless unit installation in an Andover, MAUsing zoned hvac for a sunroom

Ductless is especially beneficial for an addition to a home. That’s because it’s less expensive than expanding an existing central unit. It’s also much easier to install.

We mentioned how the air enters a room through an air handler. Each indoor unit has its own thermostat. That means you can set each air handler to a different temperature. You can’t do that with a central system.

Instead, the system creates a “multi-zone” system. Each one handles a different room, or zone, in the house. In this case, there’s just one zone. To treat it, we just needed to install one indoor unit.

The next best option would have been to add more ductwork to the existing system inside. Then, we’d have to build out a spot for a vent leading outside the home and into the enclosed patio.

Designing, fabricating and installing the ductwork is very expensive. It would also require a lot of work. Even then, our homeowner wouldn't get the results he wanted.

That’s because the thermostat in the living room would still control the enclosed patio. But, there’s a big difference: The rest of the house is insulated. The new patio is not.

This arrangement would lead to uneven heating and cooling. In the winter, the sunroom would never get warm enough. The thermostat inside would reach the desired temperature and shut off the system before it adequately treated that space. Then, the opposite would occur in the summer.

With the mini-split, our homeowner sets the thermostat on the air handler to whatever he pleases. Then, it turns on and off as needed to reach that temperature. It’s independent of the rest of the house.

Outdoor heat pump provides heating and cooling for sunroom in Andover, MACash rebates for installing ductless in a sunroom

Ductless heat and air conditioning offer a lot of benefits for an enclosed patio. But, they’re still a significant investment. Fortunately, we were able to help our homeowner cut down on that cost.

Today, many groups advocate for people to use energy-efficient appliances. Doing so is better for the environment because they use fewer resources than less-efficient models. And, to help convince people to make the switch, those groups offer cash incentives.

That’s something hvac companies have on their radar. And, we make sure to pass along the information to our clients. This way, they can get the solutions they want for less money.

In this case, we suggested our homeowner contact two groups that serve Essex County. Both came through with rebates.

The first was Mass Save, a collaborative of natural gas and electricity companies in Massachusetts. They offered a $300 rebate for each indoor unit. Even better, the Massachusetts Clean Energy Center gave our homeowner a $695 incentive.

As a result, the new system’s price dropped by nearly $1,000. Now, our homeowner improved the hvac in his home for even less money than they expected.

And, he can expand the system if he wants to later. By installing additional indoor units in more rooms, he can supplement the existing heating and cooling systems. Doing so adds a little extra climate control to the rest of the house.

It’s especially useful for hot and cold spots, or for the months when the weather isn’t at it hottest or coldest.

But, that’s an option for later. For now, our homeowner is enjoying his enclosed patio all year long.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: The sunroom in a colonial home in Andover, MA had no heating or cooling.

Solution: Installed a single-zone Mitsubishi Electric ductless mini-split.

Click here for the full story.

Andover, MA Colonial Gets Better Safer Cooling With Ductless Hvac

Andover, MA Colonial Gets Better Safer Cooling With Ductless HvacOur homeowner’s gorgeous colonial in Andover, MA had it all except one thing: good air conditioning. The home used forced hot water baseboards for heat, as many older houses in Essex County do. But to cool off, she used window units.

This solution was outdated to say the least. Window units are loud, bulky and expensive to run. They’re a hassle to install every summer, and they actually make the home easier to break into.

For years, however, homeowners preferred them when central air wasn’t option. But today, there are much better ways to get cool air in the summertime. Our homeowner was ready for an upgrade.

Today, ductless cooling offers the power of central air with the flexibility of portable units. It also helps save money on energy bills. As a result, this hvac solution has become especially popular in older homes that don’t have ductwork.

Our homeowner decided to go with a Mitsubishi ductless system after reading many outstanding product reviews. And, she chose NETR because we’re the top Elite Diamond dealer for Mitsubishi in New England.

We got to work right away designing a system that would serve her colonial home well. Our setup ensured that her home now stays cooler in the summer. And, she pays less on her electric bill to do so.

But, the benefits don’t stop there. Our system also added extra heating to the home. This makes it more comfortable in the cold weather. And, again, it does so with lower energy bills.

Problem: A colonial home in Andover, MA did not have central air. The homeowner used forced water baseboard heating and window-unit air conditioners.

Solution: Installed a Mitsubishi two-zone ductless cooling and heating system. It includes an outdoor heat pump and two inside units. One is in the family room and the other in the master bedroom.

A Mitsubishi ductless unit adds air conditioning to an Andover, MA colonial Ductless cooling in older homes

Mitsubishi ductless cooling becoming more popular in older homes. That’s because it doesn’t change the appearance of the home. We can install the entire system in less than a day. And, when we’re done you’ll barely notice it.

That makes it especially appealing for homes in Essex County. This part of Massachusetts is known for it historic buildings. And while this Andover, MA colonial isn’t as old as some of the buildings nearby, it’s certainly not new construction. In fact, you can see the inspiration of local landmarks like the Arden or David Gray House in its design.

One drawback of older New England homes, however, is that many don’t have ductwork. Instead, they used radiators or baseboard units for heat. Central air wasn’t even an option when they were built.

As a result, these homes are not equipped for an air conditioner that treats an entire home. When a home is heated with ductwork, an installer can add air conditioning to  that system. But, that doesn’t work with baseboard units.

To get around this, homeowners have used window air conditioners to cool off. However, there are some major drawbacks to this method.

First, window units are not nearly as efficient as other ac’s. They use more energy and don’t provide as much cold air.

Part of the problem is the fact that they’re portable. These smaller machines just don’t have the power of a larger system. And, since they are not permanently installed, cool air often escapes out of the window where they are installed.

In fact, that leads to another hazard: theft. For decades, burglars have kept an eye out for window units. They know it’s easy to just push one back into the house. Then, they have a nice open window to crawl in and out of.

Ductless, on the other hand, doesn’t present those problems. The units are permanently installed inside the house. That makes them more efficient and less of a safety hazard. And, since they don’t require ductwork, we can place them anywhere.

Creating zoned hvac with Mitsubishi ductless

Mitsubishi ductless system create “zoned hvac.” Instead of having one thermostat controlling every vent in the home, each vent works independently. This creates “zones” throughout the house.

As a result, our homeowners can change the temperature in different rooms without affecting the others. In this way, it’s like putting a window unit in the spot that needs it the most. But, of course, the HVAC units do a much better job.

Here’s how it works. An outdoor heat pump draws warm air from the house, leaving  just cooler air inside. Then, it extracts the heat from that air and sends it back in. This drops the temperature down further.

The air travels through narrow plastic piping. The piping is less than three inches thick and made of flexible plastic. We run it through the walls so you’ll never see it.

On the other end are the ductless HVAC units. These are also called air handlers. They’re white, rectangular devices that we mount high up on the wall. The piping connects to the back of the unit.

Each unit circulates the air in its zone. You can set each one to any temperature you want, using the thermostat built in to them. They come with remote controls for easy access, and you can program them as with most modern thermostats.

From there, they work virtually in silence. Unless you are standing right underneath one and listening, you won’t hear a thing.

Ductless hvac installation offers better cooling for less money in Andover, MASaving money with ductless hvac

A Mitsubishi ductless setup does more than just provide superior climate control. It also does it for less money than other systems. The units are energy-efficient and also work with an existing system.

In this case, our homeowner got rid of her clunky old window units. These units had lower SEER (Seasonal Energy Efficiency Ratio) ratings than her new system. A SEER rating tells you how much electricity an ac uses to provide the same effect as a comparable system.

The higher the rating, the less power it uses. Mitsubishi HVAC units are all 14 and above. The old ac’s in this house maxed out at 10.

A big reason for this is the outdoor heat pump. Rather than use electricity to run a compressor, condenser and expansion device to create cool air, it uses a heat exchange process. Rather than generate cold air, it removes heat. The pump only requires a small amount of outside power to get the system going to do so.

Next, there are no leaks in this system. The units are inside the room, so cool air doesn’t escape through the window where a unit is sitting. And, the tubing is sealed tight, unlike ductwork.

Finally, these  HVAC units also provide heat. That means our homeowner can use the system when it’s cold, too. When it starts getting chilly, she can use just use the energy-efficient units. Now, instead of firing up her old baseboard heater in October, she can wait until after Thanksgiving, when it really gets cold.

By using the more efficient heating method for a few months, our homeowner saves more money on her energy bills. Then, when it gets warm, she switches it to ac. Now, she’s getting higher-quality hvac with lower electric bills.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: A colonial home in Andover, MA did not have central air. The homeowner used forced water baseboard heating and window-unit air conditioners.

Solution: Installed a Mitsubishi two-zone ductless and heating system. It includes and outdoor heat pump and two inside panels. One is in the family room and the other is in the master bedroom. 

Click here for the full story.

Andover MA Homeowner Cools Cape Home With Ductless HVAC

Andover MA Homeowner Cools Cape Home With Ductless HVACIt’s no secret that an air conditioning system for the whole house provides better cooling than portable or window units. A central system reaches every part of your home. And, since it’s permanently installed, it’s easier to use.

But, there’s a catch: If your home doesn’t have the right setup, the cost of installing a system can skyrocket.

Central air uses ductwork to send cold air throughout the house. Heating systems using furnaces also rely on ducts and vents. If the ducts are there, our installers can tap into that system for the air conditioner.

Our homeowners in Andover MA wanted to install a full air conditioning system for their cape style home. But, the house used forced hot water heat. That system uses pipes and radiators rather than ducts and vents to distribute warmth.

As a result, our homeowners would have to pay for much more than an ac condenser and installation. We’d also have to design, build and install ductwork.

This work would more than double the cost of the project. It would also make it take much longer. And, we would have to make significant changes in the home.

Those ducts would have to go somewhere. That means they would take up closet space and other areas.

Our homeowners wanted a system that was comfortable, efficient and cost-effective. Fortunately, we had a solution that would deliver all that. And, it wouldn’t involve ductwork.  


Problem: A cape-style home in Andover MA had forced hot water heat but no air conditioning. The homeowners wanted to add cooling to their home.

Solution: Installed three Mitsubishi ductless units in the master bedroom, office and tv room with an outdoor condenser.


Ductless panel installation in Andover Ma cape-style homeDuctless hvac for homes without ductwork

A ductless system offers the power and reach of a central air conditioning system without needing ducts and vents. In less than a day, our installers can put in a system that treats an entire home. And, its footprint on the house is minimal.

This is possible thanks to the way these systems work. They don’t use ducts or pipes to transport cold air. Instead, that air travels through flexible, plastic tubing.

These tubes are less than two inches thick. We can snake them through walls as easily as running electrical wire. The process does not require us to build anything, tear down any walls, or take up any space.

On one end of the tubing is an outdoor condenser. The condenser provides the treated air. That air then travels to the indoor units.

We mount the indoor units on walls in the home. They’re responsible for distributing the air. They are whisper-quiet and sit high up on a wall. That keeps them mostly out of sight and out of mind.

Connecting the system is easy. Our installers simply drill a hole into the home that’s less than five inches around for the tubes to connect to the condenser. Then, they seal it up, so it’s barely noticeable.

On the other end, the tubes connect to the back of the indoor units. As a result, you never see the spot where they enter the room.

The process is much simpler and much cheaper than installing ductwork. And, the benefits don’t stop there.

Ductless panels provide zoned hvac in Andover MA cape homeZoned HVAC offers better climate control

The indoor units create what’s called “zoned” hvac. In this model, each area of the home is cooled by a different unit with a thermostat.

Now, you can set each ductless unit to the temperature you prefer. The units all work independently of one other. Each one turns on and off as needed.

One option is setting every unit to the same temperature. Doing so gives you even cooling throughout the entire home. It eliminates common problems like bedrooms being warmer than rooms on the first floor.

Or, you can set each unit differently. For instance, let’s say you won’t use the bedroom most of the day. You can set that unit to a higher temperature until the evening. Or, if you prefer it cooler than other rooms, set the temperature lower than, say, the living room.

This flexibility offers much better climate control than older systems. Hot and cold spots are common with central air. In that setup, the entire system turns on and off according to the readings of just one thermostat.

However, that thermostat is usually on the first floor. The second floor is often warmer. So, the system shuts off when the first floor is cooled off. But, it leaves the bedrooms hotter than they should be.

The new system solves that problem. It treats each zone separately. This allows for even or customized climate control for the entire home.

An outdoor condenser for a ductless panel system in Andover MADuctless units save money

A ductless system is a significant investment. But, it’s still much less of an upfront cost than installing ductwork. And, those savings continue well after the units are in place.

The units are more energy efficient. They use less energy than a comparable system to produce the same effect. By using less power, they end up costing less on the homeowner’s monthly electric bills.

These savings happen for a few reasons. First is the tubing that pushes the air through the house. The tubes are sealed tight, so no air escapes along the way.

This system is different from ductwork. With ducts, cold air escapes the system before reaching the vents. Then, the system has to produce more cold air to make up for that loss. That ends up costing more.  

Next, the zoned effect allows the units to use less energy. Each unit turns off once it has treated its zone properly. Now, the system isn’t using extra energy cooling the entire house when only one or two zones need it.

And, that all happens automatically. Our homeowners can save even more money thanks to the zone feature. They can decide not to run all the indoor units all the time. If they’re not going to be downstairs at night, for instance, they can set the temperatures in those zones higher than upstairs.

And, they can do the opposite with the bedrooms during the day. By running each unit for less time, they use less energy and save more money.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: A cape-style home in Andover MA had forced hot water heat but no air conditioning. The homeowners wanted to add cooling to their home.

Solution: Installed three Mitsubishi ductless units in the master bedroom, office and tv room with an outdoor condenser.

Click here for the full story.

Ductless Units Offer Superior HVAC in New Cape Home

Ductless Units Offer Superior HVAC In New Cape HomeOur homeowners were looking for the perfect hvac system for their new home. They were building a cape-style home in Andover MA and wanted a system that was energy-efficient.

Since this was new construction, our homeowners had their choice of heating and cooling options. But, they had heard a lot about ductless units and wanted to find out more.

They chose NETR after reading our outstanding customer reviews online. And, they saw that we are the Number-One Elite Diamond Dealer Contractor in New England for Mitsubishi ductless systems.

We walked them through all the benefits of Mitsubishi HVAC units: They use less energy than central systems or portable heaters and ac’s. They’re also quieter and require much less maintenance. It wasn’t long before they were ready to go ductless.


Problem: Homeowners were building a new cape home on North Andover MA. They wanted an energy-efficient heating and cooling system that was low maintenance and resulted in low monthly energy bills.

Solution: Installed a Mitsubishi ductless HVAC system. It comprises seven units throughout the first and second floors and connects to an outdoor heat pump.


How do ductless HVAC units work?

Ductless Unit Installation in a North Andover MA Cape Home Ductless HVAC units work by combining the flexibility of space heaters and window air conditioners with the power of a central heating and cooling system. They are also much more energy efficient, using less energy to provide the same climate control as comparable units.

The system starts with an outdoor heat pump. This unit provides warmth or cold air.

The pump uses a heat exchange process. We’ll get into it a little later. But, in a nutshell, it doesn’t use energy sources such as gas, oil, or electricity to generate heat or cooling. Instead, it transfers heat from outside and inside the home to provide climate control.

It sends treated air through the house using very narrow, plastic tubing. That tubing, or piping, spreads throughout the house. Our installers need to snake it through the walls like electrical wiring.

This is in contrast to traditional ductwork. Ducts are much bigger and bulkier. They cost a lot more to design, build and install. They also take up a lot more space than the tubing. And, they lose treated air along the way.

At the other end of our system are the HVAC units. These deliver the treated air to the house. Installation is simple: Our installers determine the best spot in the room for them. Usually, that’s high up on a wall where they are mostly out of sight.

For installation, our techs mount them on the wall. Then, they connected the tubing in the back of the unit. You won’t see the tubing at all and will barely notice the units. Even when they are working, they barely make a sound. Unless you’re standing right under a unit and listening for it, you won’t hear anything from it at all.

What are the benefits of zoned HVAC?

Ductless Units Offer Zoned Heating and Cooling in a Newly-Constructed Cape-Style Home A significant benefit of ductless units is zoned HVAC. With this system, each unit handles the climate control for a different room, or zone, in the home. This setup prevents problems such as uneven heating and cooling. That’s when some parts of the house are hotter or colder than other spots.

With traditional HVAC, usually, one thermostat controls the entire house. The problem with this, however, is that different rooms warm or cool faster than others. Generally, in the winter the bedrooms take longer than the rooms downstairs to warm up. The opposite occurs in the summer.

Since there is only one thermostat, the system treats the room with the thermostat perfectly. But, it doesn’t measure for the other places. That’s where a zoned system is better than other options.

Here, each unit has a thermostat. That allows each one to work independently from the others. If the master bedroom, for instance, takes the longest to warm up, that unit will continue providing heat after the others shut off.

Meanwhile, the first-floor rooms that warm up first won’t get overheated because the system has to stay on to treat the colder areas. Instead, those units shut off before the others.

A zoned system also allows our homeowners to customize their heating and cooling. If they prefer the bedrooms cooler than the downstairs, for instance, they can set those thermostats differently than the others. Or, they can go for nice, even climate control throughout their new home.

How does ductless save money?

Outdoor Mitsubishi Heat Pump in North Andover MACompared to other HVAC options, the Mitsubishi HVAC units use less energy to heat or cool a home. As a result, they cost less to run. Homeowners save money this way on their energy bills.

There are a few ways in which the Mitsubishi units use less energy than a central system. First it the heat pump. As we mentioned before, it uses just a little electricity to start working. This is different from using a power source to generate heat or cold air.

Inside the pump is coolant liquid that stays in the system all the time. Since warmth is attracted to cold, heat is drawn to the coolant. This drives the heat exchange process.

In the winter, the system draws what little heat there is outside into the system. A condenser magnifies the heat and sends it into the house.

When it’s warm outside, the heat pump uses the same process to draw heat out of the house. That leaves cool air inside. Then the system works in reverse to remove the heat and send cold air back inside.

That's is a different process than generating heat by burning, say, oil or gas. Since the heat pump uses a closed system, it just needs a small amount of power to run the condenser.

Next is the piping. These tubes are sealed tight. This prevents treated air from escaping before it’s supposed to get out.

Ductwork, on the other hand, isn’t as closed off. Some of the heat or cooled air traveling through ductwork leaks out before it reaches the vent. Then the system has to generate more to create the desired effect.

Finally, the units themselves save energy — and money — in a few ways. Since each one works independently, the system doesn’t overwork to warm or cool the hardest rooms to reach. When those other units turn off, the whole system uses less energy.

All those factors result in lower energy bills each month for our homeowners. And, because the units are so efficient, our homeowners received a rebate for installing them.

The group Mass Save offers cash incentives for people to install energy-efficient HVAC systems. The HVAC units are Energy Star-certified. They meet federal standards showing they use less energy than other models.

As a result, our homeowners received a $600 rebate toward installing their system. Now, they have better climate control than if they’d gone with traditional ductwork. That’s a finishing touch on their new home.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: Homeowners were building a new cape home on North Andover MA. They wanted an energy-efficient heating and cooling system that was low maintenance and resulted in low monthly energy bills.

Solution: Installed a Mitsubishi ductless HVAC system. It comprises seven units throughout the first and second floors and connects to an outdoor heat pump.

Click here for the full story.

Ductless Fixes Hard-to-Cool Rooms in Andover MA Colonial

Ductless Fixes Hard-To-Cool Rooms In Andover MA Colonial Our homeowners in Andover MA were ready to finally get some better cooling options in their colonial home. For years, their TV room, living room and master bedroom all got too hot in the summertime.

However, the house did not have central air conditioning. And the homeowners never wanted window ac’s. They were too bulky, too noisy and too expensive.

Other parts of the house stayed cool with fans and open windows. But, these rooms were always warmer.

Years ago, the best solution would have been a central ac unit. But that would be very expensive here. Since the home had forced water heat, there was no ductwork. It would cost thousands more for a company to design, build and install ductwork throughout the house.

Fortunately, we had a better solution: A Mitsubishi ductless HVAC system. It would offer the climate control they wanted at a fraction of the cost of other options.


Problem: The tv room, living room and master bedroom in an Andover MA colonial home were too hot in the summer. The house had forced hot water oil heat and no air conditioning.

Solution: Installed three Mitsubishi ductless units, one in each room, with a matching outdoor condenser unit.


Ductless units vs. retrofitting central air conditioning

For decades, central air conditioning was the best way to cool an entire home. It offered cooling throughout the house.

And, it is more efficient than window units and much more powerful than fans. However ductless units provide all that and more. And, they do it for less money each month than the older ac systems.

This system starts with an outdoor condenser. This unit generates the cold air that circulates through the house. From there, however, the cooled air travels through flexible plastic tubing instead of vents.

That tubing connects to the units in the home, which distribute the cooled air. This setup is more efficient than ductwork for a few reasons. First, the tubes are sealed tight. Ducts, on the other hand, are not. Cooled air can escape throughout the system.

Older hvac systems use more energy to make up for that loss. Our system doesn’t have to do that.

And, in a home with no central ac, indoor HVAC units are a better option than retrofitting. That’s especially so in a house like this.

Many times, hvac installers can connect an air conditioner to existing ductwork. But, this home uses forced water heat with pipes and radiators. There are no ducts in the house.

That would easily double the cost and time to put a full-home air conditioning system. And, those ducts would have to go somewhere. That means using up closet space and building out sections of ceilings to run the ducts.

That won’t happen with the Mitsubushi units, however. Instead, our installers just run the tubing through the walls. We can connect to units virtually anywhere in the house. And, it takes less than a day to put it all in.

Zoned HVAC offers better climate control

Ductless HVAC Installation in Andover MA Colonial Ductless units offer what’s called “zoned” hvac. Here, each one handles the climate control for a different room, or zone, in the house. They are more efficient and create even temperatures throughout the home.

Each unit has a thermostat on it. That’s contrasted with a single thermostat that controls the entire home. Instead, each unit measures the temperature for its zone. Then, it works accordingly.

This setup means each room gets cooled separately from the others. Let’s say the bedroom is always warmer than the other rooms in the summer. That unit simply keeps working until it reaches the desired temperature.

Meanwhile, the units in the other rooms will shut off before that one. This way, each room keeps the same temperature.

That's not the case with just one thermostat in the home. With that setup, the household unit works until that thermostat shows the temperature you want. But, the temp may be different in other rooms. That’s not accounted for with one thermostat.

Now, with zoned cooling, hot and cold spots are a thing of the past. Each room is precisely the temperature you want.

This setup also offers more flexibility. For instance, our homeowners can use different settings on each unit. Now, the tv room can be a little warmer than the master bedroom, if that’s what they prefer.

Or, they can turn off the unit in a room when they aren't using it for a while. Sometimes, it makes more sense to not treat a bedroom during the day when you’re not using it. The same goes for a TV room when you’re sleeping.

In these ways, zoned HVAC give our homeowners many more options than just one unit for the whole house. Now, they can set each room to any temperature they want.

Low-cost air conditioning with Mitsubishi ductless units

Zoned HVAC with Mitsubishi Ductless Units in a Colonial HomeFor all its benefits, an indoor HVACsystem comes with a relatively low price tag. Of course, there’s a substantial upfront investment just like any significant hvac installation. But, the system costs much less than other options to run each month. And, in this case, we helped our homeowners defray the installation cost.

The Mitsubishi units we installed are Energy Star-certified. They meet federal standards showing they use less energy than other systems that provide the same level of climate control.

Today, there’s a big push for more energy-efficient systems like this. They are better for the environment and use less natural resources. And, to make them more attractive, organizations around the country offer incentives for people to choose them.

We knew of two groups near our homeowners that offered cash rebates to anyone who chose these units over others. And, we made sure they applied for the refunds.

As a result, our homeowners saved more than $2,500 on their installation costs. One group, Mass Save, gave them a $300 rebate. Another, the Massachusetts Clean Energy Center, offered $2,343 in cashback.

Then, our homeowners took advantage of our financing package. They’ll pay off the remainder of the cost over seven years. And, those payments are interest-free.

That’s the big picture. Month to month, the Mitsubishi units continue saving our homeowners money. Since they’re so efficient, they much less to run than many other options. And, the zoned feature lets them save even more money. Our homeowners can program each unit only to run when they’re needed.

That all amounts to, well, not much at all in payments every month for state-of-the-art cooling. Now, when the summer hits, they’re getting excellent climate control. And, they’re paying much less than they would have with just about any other option out there.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: The tv room, living room and master bedroom in an Andover MA colonial home were too hot in the summer. The house had forced hot water oil heat and no air conditioning.

Solution: Installed three Mitsubishi ductless units, one in each room, with a matching outdoor condenser unit.

Click here for the full story.

Ductless Mini-Split Installation in Andover, MA Colonial

Ductless HVAC Units Offer Better Heater and Cooling In Andover MA Colonial Our homeowner in Andover MA was more than ready for a major HVAC upgrade. Her colonial home was spacious and sat on a large piece of land. But, it never had great heating and cooling.

For starters, the home had electric heating. It certainly gets the job done, but it takes a long time to do it. Electric heat doesn’t warm a house nearly as quickly as other sources. That’s not exactly ideal for winters in New England.

Electric heat is also more expensive than, say gas or oil. On the one hand, an electric furnace lasts longer gas or oil burners. On the other, the unit costs for electricity are just more than those other sources.

Next was the air conditioning. This home never had a central air conditioner. Instead, the homeowner used window air conditioners.

They offered some cooling. But, the units were very loud and cost a lot to run. And, they never cooled the home as well as central air.

So, for years the homeowner spent her winters waiting for the house to warm up. And, when it got hot out, she got by using ceiling fans and open windows as much as she could. It was time for a change.

Our homeowner reached out to NETR after reading our many, many positive reviews. She was looking for an entirely new system. It needed to be cost-efficient and easy to maintain. And, it should have more benefits than her current furnace.

We toured the home and drew up a design for a ductless heating system. It would meet all of her requirements. And, it would even offer some advantages she hadn’t even considered yet.

Problem: A colonial home in Andover MA had electric heat and no air conditioning. The homeowner wanted a cooling system more efficient and cost-effective heat.

Solution: Installed an outdoor Mitsubishi Hyper-Heat heat pump and condenser with five indoor units throughout the home.

Common HVAC problems in a colonial home

Ductless Unit Installation in an Andover MA ColonialThere’s a lot of variety in colonial homes. The design dates back to the 1600s —- hence the name. Others are modern, but use the same basic model: A square shape and symmetrical design with the front door right in the center of the home.

It’s a stately, traditional look. But, it has some drawbacks when it comes to heating and cooling.First, this style of homes usually has a lot of windows. That means a lot of drafts. Heated air can seep out, and winds can blow in. During the winter, this can drive down the temperature.

Then, there are attics and garages. These can add space and aesthetic value to a home. But, they also make it harder to heat and cool.

In the winter, warm air rises into the attic. As the heat goes up, cold air seeps into the bottom of the house.

It's usually not a problem on the first floor, because that’s where the thermostat is. The heater will kick on and keep working until that area reaches the temperature you want. But, then it will turn off even if other parts of the house are still cold.

And, often that part is the second floor. The heat keeps moving into the attic and then escapes through the roof. However, the thermostat still reads okay for the first floor, so the bedrooms become chilly.

Meanwhile, this has an opposite effect in the summer. Warmth naturally moves toward cold spots. Now, the hot air rises and collects in the attic. But the air outside is warm as well, so the indoor heat doesn’t continue moving as much. With the heat collecting there, the more air that rises starts to accumulate on the top floor.

Finally, many homes like these were built before central air conditioning was available. It wasn’t until the 1970s that this feature was available in homes. This home was built before that, and so it was never outfitted for it.

Fortunately, a ductless system addresses these problems much better than electric gas or oil heat, and central air, ever could. And, it costs less to run than those options.

Creating zoned heating and cooling with ductless

A significant benefit of a ductless mini-split system is “zoned” heating and cooling. This is different from most systems that have a single thermostat in the home. With a zoned system, almost every room of the house gets treated separately. It’s more efficient than just using one measure for the entire home.  

Here’s how it works:  The heat or cooled air comes from an outdoor heat pump. It's is like an outdoor ac condenser for central air. There are two significant differences, however.

First is how the system treats the air. We’ll get into that a little later. The second is how that air travels through the home.

As the name implies, this system does not use traditional ductwork and vents. Instead, the air travels through very thin, very flexible tubing.

This setup creates an important difference. First, our installers can run those tubes anywhere in the home. They can snake it through walls without having to do any major work.

The tubes then connect to the indoor units. These are long, rectangular air handlers that mount on the walls. Since the tubing can go anywhere, our installers can find the best spots for each one.

Usually, the indoor units are mounted high on a wall. They’re hardly noticeable that way. It also helps that they’re whisper-quiet: Unless you are standing right under one and listening to it, you won’t even notice that it’s on.

Here’s where the zoned part comes in: Each indoor unit has enough power to heat or cool one or two rooms. That’s why we install more than one in each home. Each area is a different zone.

And, each indoor unit has its own thermostat. Now, there are multiple zones with individual indoor air handlers regulating the temperature.

Now, if the upstairs rooms are still cold after the first floor heats up, that’s fine. The systems in those rooms will stay on even after the ones downstairs shut off. And, the opposite occurs in the summer: the air handlers in the warmest rooms keep cooling after other zones turn off.

This arrangement eliminates the uneven temperature that is common with just one thermostat for the whole house. If every indoor unit is set to the same temperature, you’ll actually get that temp across the entire home.

Saving money with a ductless mini-split system

Installing a new HVAC system for an entire house is a significant investment. But, installing a ductless mini-split system doesn’t cost nearly as much as electric, gas or oil heat. And, it’s cheaper than window air conditioners and even central air.

The ductless systems are Energy Star-certified. This designation means they meet government standards showing they use less energy than comparable systems. Thus, our homeowner spends less money on her monthly utility bills.

The savings start with the outdoor heat pump. The pump doesn’t use electricity to generate heat. That’s what cost our homeowner a lot in the past. Instead, it just uses a small amount of energy to get started.

Without getting into the science of it, a heat pump works by creating heat exchanges. In the winter, it draws what little heat there is outside and amplifies it. Then it sends that heat into the home.

In the summer, the pump draws heat from the home. That leaves cool air. Then it creates a heat exchange where the warmth exits the system. The cold air that’s left gets pumped back in.

Next, is the tubing that leads carries the air. These are sealed much better than ducts and way better than window ac’s. Those systems tend to lose heated or cooled air along the way. When that happens, the system needs to use more energy to create more warmth or cooling. With ductless, almost none gets wasted.

As a result of this efficiency, the system costs less to run each month. Now, our homeowner sees much lower energy bills.

And, because the system is so efficient, our homeowner also got a break for installing it. In the Bay State, two organizations encourage people to install energy-efficient HVAC systems. They use cash rebates as incentives.

While we were setting up our homeowner, we made sure she knew to apply for rebates. As a result, she saved $3,000 on her installation. One group, Mass Save, gave her a $500 rebate. Meanwhile, the Massachusetts Clean Energy Center gave her $2,500.

The cash-back made a massive dent in our homeowner’s upfront costs. And, with the savings on her energy bills, the system will just about pay for itself in a few years.

Do you want a better and more cost-effective and efficient option for heating and cooling your home? Contact us, and we'll design the perfect solution for you!

Problem: A colonial home in Andover, MA had electric heat and no air conditioning. The homeowner wanted a cooling system more efficient and cost-effective heat.

Solution: Installed an outdoor Mitsubishi Hyper-Heat heat pump and condenser with five indoor units throughout the home.

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