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Gammon's Heating & Cooling

Thermostat Service, Central A/C - Install, Central A/C Service or Repair,

About us

Gammon’s Home Services—Heating, Cooling & Heat Pumps—is built around one simple goal: taking great care of our customers. From your first call to the day your new system is installed—and for years after—we’re here to make sure everything is easy, comfortable, and done right. We specialize in heating, cooling, and electrical services, along with maintenance plans designed to keep your system running smoothly and avoid costly surprises. Through our Buddy Club membership, we help homeowners stay ahead of breakdowns, improve efficiency, and get priority service when they need it most. And with our Gammon’s Guarantees, you can feel confident knowing the work is done right—we stand behind everything we do. Whether it’s a heat pump, A/C system, boiler, or furnace, our team installs and maintains all types of equipment—and we’re with you every step of the way.

Business highlights

Emergency services offered
14 years of experience

Amenities

Emergency Services

Yes

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.25 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
80%
4
0%
3
0%
2
0%
1
20%
Showing 1-5 of 5 reviews
Parker G.
Jan 2026
5.0
$15,000
They came and replaced our very old furnace with a brand new wall hung. Very great to work with !!

ADAM G.
Feb 2025
5.0
Yes, I recommend this pro
$17,000
Gammon's Heating and Cooling exceeded our expectations! Justin was incredibly helpful in guiding us through the process of replacing our antique steam boiler. He patiently provided three different quotes and never pressured us to choose the most expensive option. The installation team, led by the highly experienced Bill, was fantastic. They arrived on time with a full crew, a great mix of seasoned professionals and eager learners. We even heard Bill sharing his expertise with the younger team members, which was impressive. From start to finish, the professionalism of Gammon's was outstanding. We wholeheartedly recommend them to our family and friends

Kerry M.
Nov 2023
1.0
$10,000
Gammon's attempted to install a new propane boiler for me. The job took nearly a year after several complaints about boiler malfunctioning/shutting down (in the middle of winter), over heating, water leaks and even a significant propane leak, costing me hundreds of dollars in leaking propane! They signed off on the job with several connections leaking propane. They left many things undone and not to code. I had to get the Department of Professional and Occupational Regulation Maine Fuel Board involved with a inspection (which was very helpful) for them to come back out and address the issues. The owner never answered any of my e-mails/calls about these issues (even the concern about LEAKING PROPANE). I still have a thermostat that isn't working correctly and have just had to leave it off. I placed a complaint with the Maine Attorney General and yet have come to a resolution. I will say that the office staff was very helpful and pleasant. Read less

Debbie A.
Jan 2023
5.0
Yes, I recommend this pro
Needed my boiler cleaned and was very pleased with the office staff. They were very helpful and Accommodated my schedule. The tech was extremely helpful and even explained what he was doing and why it’s important to get an oil boiler cleaned every year!! I even signed up for their GSC club program and now next year I won’t forget to call because they will call me!! Thank you Gammons!!

Kyle B.
Jan 2023
5.0
Yes, I recommend this pro
Great! Gammons was quick to provide a quote at a fair price. I was able to review and approve the quote via a link in an email. Gammons scheduled the work right away and swapped out the tank in an afternoon. Everything was neat and very professionally done. We’re very happy with the work and function of the new unit.

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Gammon's Heating & Cooling is currently rated 4.2 overall out of 5.

Gammon's Heating & Cooling accepts the following forms of payment: CreditCard

Yes, Gammon's Heating & Cooling offers free project estimates.

No, Gammon's Heating & Cooling does not offer eco-friendly accreditations.

Yes, Gammon's Heating & Cooling offers emergency services.

No, Gammon's Heating & Cooling does not offer warranties.