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NETR Inc  
Best air conditioning contractor in Boston.

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.

Zoom in on your town and click to find ductless installations we've done for your family, friends and neighbors!

Find a case study based on home construction type


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

Click the button below to explore case studies by home construction type:

Single Family Homes by Construction Type

Or, browse our most recent case studies below:

Three Family Victorian in Somerville Gets State of the Art Cooling with Ductless

Problem: An old Victorian home, converted to serve three families had no cooling and needed a more permanent solution than window units to keep the homes comfortable.

Solution: By adding three zones of Mitsubishi ductless cooling, each family will have the cooling they want, but it will be able to be customized to their own needs, rather than having one unit control the temperature in all the others. This custom solution will ensure every family gets the comfort they need, right where they need it!


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Somerville Condo in Victorian Home Gets Kitchen Comfort at last!

Problem: The owners of a third floor condo in a converted Victorian home needed additional cooling comfort in their kitchen. They wanted a cost-effective solution that wouldn't break the bank to install or in monthly energy bills.

Solution: A single zone ductless system will make sure this third floor condo is perfectly comfortable, and the phrase "If's it's too hot, get out of the kitchen" will never be a problem again!


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Somerville Colonial Gets Cost-effective Heating with Ductless

Problem: The homeowners were heating their home with electric and they were looking for a energy-efficient and cost-saving alternative that would give them the comfort they wanted, in their homes and their wallets.

Solution: Three zones of Mitsubishi Hyper Heat ductless heating (and cooling) will keep this home comfortable every day of the year, while keeping energy bills low.


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Expanded Cape Home in Walpole gets Comfort for the Family Room

Problem: The homeowner was looking for more comfort in their large family room that wasn't being adequately cooled by window a/c units. They wanted and energy and cost-efficient solution that would give them the comfort they wanted without costing a fortune to operate in the increasingly hot and humid summers.

Solution: A single zone of Mitsubishi's ductless air conditioning system will provide the family room with year round comfort at the touch of a button- making sure the family can truly enjoy their time together. The family also benefitted from $875 in rebates, helping to make this energy-efficient solution even more affordable.


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How to Heat a Baby's Room in Somerville, MA

Problem:The Homeowners were expecting a new baby, and the room they wanted to use for a nursery didn't have heat. They wanted to make sure the baby would be perfectly comfortable and they were also concerned about making sure the air quality was as high as possible.

Solution: A single zone of Mitsubishi ductless heating and cooling ensured that the nursery would have state of the art heating with a strong air filtration system to ensure both comfort and health for the new arrival. The system will also provide cooling comfort in the summer, making sure everyone will be comfortable every day (and night!) of the year.


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Multifamily Home in Somerville gets Comfort Multiplied with Ductless

Problem: The family was using window air conditioners to try to keep their kitchen, family room and master bedroom comfortable, but they were noisy, expensive to run, and didn't always "keep up" on really hot days, leaving the family hot under the collar with expensive energy bills.

Solution: A three-zone Mitsubishi ductless system provided them with quiet comfort throughout, with increased efficiency and lowered energy bills.The family got a permanent solution that let them be comfortable all year long, while also saving them from trying to time the installation/putting away of window units properly every year!


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Gorgeous Contemporary Ranch in Beverly gets 5 Zones of Perfect Comfort

Problem: The lovely home was relying on window units alone to keep cool in the summer.The units were expensive to run and inefficient, and took up window space for almost half the year.The homeowners wanted a better solution that would let everyone in the family sleep better (and more peacefully) at night.

Solution: We installed 5 separate zones of ductless heating and air conditioning, insuring everyone would get a comfortable might's sleep, every day of the year! We also installed a unit in the the main living room area, ensuring the family would enjoy every moment of togetherness without getting hot under the collar. 


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Maximum Comfort for this Waltham Colonial with Ductless Air Conditioning

Problem: The homeowners needed additional comfort for their master bedroom and home office- the window a/c units weren't cutting it, and they were miserable. They wanted to make sure they got a reliable, cost-effective solution that would help them sleep better at night and  work better during the day!

Solution: Two zones of Mitsuibishi's ductless units now provide world class air conditioning, ensuring our homeowners in Waltham won't be kept up nights worrying about their energy bills. They can now work efficiently at home and sleep like a baby in perfect comfort throughout the first floor of their home.


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Comfort and Safety with ductless Air Conditioning in a Lexington Garrison Colonial

Problem: Four unsightly, inefficient, noisy window units were blocking 4 windows, detracting from the home's overall aesthetic and racking up huge electric bills.
Solution: A four zone Mitsubishi ductless split system powered by one outdoor condenser and four wall-mounted heads, also known as cassettes.
Click here for the full story.

Five Zone Ductless Heating and Cooling Helps Save Energy for this North Andover, MA Colonial

Problem: Our homeowners had electic heat and were using window units to heat and cool their home, but were getting killed by energy bills! They wanted a more efficient system that would provide them with year-round comfort.
Solution: Installed a Mitsubishi Hyper Heat Ductless Unit with 5 zones of heating and cooling comfort to allow pinpoint control of the temperature throughout every zone, ensuring comfort 365 days a year. The homeowner will get their windows back, save money every month on energy bills, and enjoy perfect comfort at the same time!
Click here for the full story.
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