Gagnons Heating & Air Conditioning
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Gagnon Heating & Air Conditioning, Inc. is a full service heating & air conditioning company specializing in utilizing technology to utilize our natural resources and remove our reliance on fossil fuels. Whether it be a geothermal heating & cooling system to help cut oil consumption, a radiant heat system to keep your home warm and your driveway free from ice & snow buildup, or a central air conditioning system to keep you comfortable year round.

Much of what we do involves geothermal heating & cooling systems. We have been installing geothermal systems since 2000. Gagnon Heating & Air Conditioning is Maine's Geothermal leader with over 200 systems installed. With 24 hour on call staff, we are there when you need us. One of our installations received the first Gold Level LEEDS certificate in New England.
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There are several advantageous tax credits for energy efficient systems and Geothermal. At Gagnon, we want you to be aware of the many benefits of geothermal energy - beyond the environmentally friendly advantages for our planet; there is now Federal stimulus available in the form of tax credits for residential projects, both new and upgrades, and commercial projects via tax credits, grants or accelerated depreciation.
Geothermal systems use the heat from the earth to heat your home in the winter and cool it in the summer, keeping you comfortable year round. Geothermal is cost effective, reliable, energy efficient, and environmentally friendly. Geothermal can be used in residential and commercial applications, in new construction as well as in existing homes or businesses.
Geothermal systems are electrically powered systems that take advantage of the earth's relatively constant ground temperature to provide heating, cooling, and hot water for residential & commercial buildings. Rather than creating heat like a fossil fuel system, geothermal moves heat that already exists in the ground into your home in winter and reverses this cycle in the summer.
Geothermal systems transfer heat from the earth into your home or business in the winter and transfer it back in the summer to keep you at a comfortable temperature year round. Geothermal offers heating, cooling, and hot water in a system that is cost saving, reliable, energy efficient, and environmentally sound.
New construction, 1,798 sq. New construction, 1,698 sq. New Construction, 3,766 sq. New Construction, 4,916 sq. Retrofit, 2,484 sq.ft. New Construction, 2,974 sq. New Construction & Retrofit, 4,884 sq. New Construction, 8,541 sq. New Construction, 2,304 sq. New Construction, 3,280 sq. Retrofit, 1,539 Sq. ft.
Reviews (5)
Bob Ellis
Bob Ellis
Nov 03, 2021
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Excellent installation of Air Conditioning and correction and completion of a major heating system at our lodge hall. Great people to work with locally owned and real professional.
Mike
Mike
Sep 04, 2021
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Very professional and easy to work with. We had issues relating to coordination with a electrician for final hook-up that was addressed professionally and to our satisfaction with little stress. Would be a good idea for them to either hire an electrician on staff to handle hookups. We’re thinking a second system at some point in the future and would happily work with them again.
Scott Ramsdell
Scott Ramsdell
Mar 23, 2021
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Positive: Professionalism, Quality, Responsiveness, Value
One of the finest professionals you will ever retain. Installed a heat pump and boiler in a distressed property in the middle of winter like clockwork. Then 2 months later after the basement flooded, Tony had it operational that Friday evening! Jeff and the team are the best.
Services: Heating system repair, AC installation, Heating system installation
Jason K.
Jason K.
Oct 12, 2020
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5 star experience with Jeff and his entire team. We had his team over for an estimate a year ago and we had to put the job on hold. Once we wanted to pick back up Jeff responded quickly and got the job on the calendar. The install crew was excellent. On time, efficient, and great quality with the install. Can't recommend this company enough.
Scott Cote-Crosskill
Scott Cote-Crosskill
Oct 25, 2018
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My wife and I had to take the time to let you know how amazing Jeff and Les are. We could never have foreseen how superb they are when we recently purchased our furnace and hot water heater from them. (The installation and all aspects went smoothly). Yesterday, our new furnace was significantly damaged because of a power surge through the electrical line. The furnace was repaired in a day to ensure that we were warm in February. Jeff replies to calls right away and takes care of your needs immediately. Les is so professional and he truly cares about you, making sure to do everything possible to