4.5 
46 *The Angi rating for Heating And Air Conditioning Service companies in Gill, MA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Gill, MA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on July 10, 2026
Serving Gill, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"Great !! Gabriel was on time and went right to work. He took pictures of duct work before and after. He supplied my wife and I N95 masks to wear during the cleaning keeping us safe. Gabriel was a true professional."
+2
Serving Gill, MA and surrounding areas
Approved
In business since 2005
Free estimates
Offers commercial services
"Sergio and Jordan were here at the time they said they would be. Timing is very important. The two did a very thorough job cleaning and explaining what they were doing. I would recommend this company to my friends. I would also hir them again. Great job."
+6
Serving Gill, MA and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
WalshCo is a family-owned heating company specializing in oil-fired heating systems throughout New Hampshire and surrounding communities.\n\nOur services include oil tank installations and replacements, oil boiler and furnace installations, heating system repairs, annual maintenance and tune-ups, diagnostics, emergency no-heat service, water heater installations, and oil tank inspections.\n\nWe take pride in providing honest recommendations, quality workmanship, fair pricing, and dependable service. Whether you need a new oil tank, a complete heating system replacement, or fast repairs to restore your heat and hot water, our licensed technicians are committed to getting the job done right.\n\nAs a family-owned business, we believe in straightforward communication, professional service, and treating every customer’s home with the same care and respect we would our own.
Serving Gill, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Small jobs welcome
"This company responded quickly to my request for a quote. Their quote was reasonable and competitive when compared with other licensed electricians. The service was provided with competence, professionalism, and by a friendly crew. Highly recommended"
Serving Gill, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"We needed chimney sweep & minor repairs. Scheduling was easy and the guys who showed up were on time and very professional. Work was done well and we’re very happy, will be calling them for all future work on our chimney and HVAC."
+36
Serving Gill, MA and surrounding areas
Approved
In business since 2020
Free estimates
Small jobs welcome
"JCamp electric arrived on time and explained everything that they were there to do. After they finished they cleaned up and left nothing behind. JCamp electric is professional and very friendly. We will be hiring them again for our next project."
Serving Gill, MA and surrounding areas
Approved
In business since 2000
Free estimates
Warranties offered
"Fabulous job! We area already see the difference with the insulation through Mass Save about 25%! Mark and his crew were very professional, courteous, and really nice guys. Garrett did a great job with estimating and made the process very easy and recommended additional measures to explore. I highly recommended Green Collar!"
+2
Serving Gill, MA and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
😃Ready to work. With the best possible attitude and the appropriate tools—whatever you wish to transport—and with the utmost safety.🫡
Serving Gill, MA and surrounding areas
In business since 2006
Free estimates
Credit card accepted
"Very well, the tech was very polite, explained and showed me everything he was doing, took pictures inside the ducts to show before and after . Would definitely hire again."
+14
Serving Gill, MA and surrounding areas
In business since 2022
Free estimates
Emergency services offered
"The team at AllStar were really friendly and did a great job cleaning my air ducts."
+12
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