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12 *The Angi rating for Heating And Air Conditioning Service companies in Otis, 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 Otis, 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 March 25, 2026
Serving Otis, 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 Otis, MA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"Cary responded very quickly to my request and came out the next day. He was very thorough and efficient in rooting out the problem and was able to fix our a/c unit within the hour. And gave excellent pointers as well as recommendations for better energy efficient cooling/heating systems for our entire house. Will definitely go back to him in the future."
+25
Serving Otis, MA and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Don is a good HVAC guy and honest businessman"
Serving Otis, MA and surrounding areas
Approved
In business since 2020
Free estimates
Offers commercial services
"The guys responded quickly, came when they said they would come and did a fantastic job. They were very professional and cleaned up afterwards."
+49
Serving Otis, MA and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"Brady and Casey are an awesome team. They came a long distance when the locals couldn't or wouldn't. They're friendly, extremely knowledgeable and if they were closer, they would be our regular furnace experts!"
Serving Otis, 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 Otis, MA and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
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 Otis, MA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"We hired Alan to replace several outlets in our house and assist with a dryer installation. He was a good communicator, was able to come soon and to work around our schedule, and was a knowledgeable and conscientious professional (he even brought coverings to wear over his boots in the house, a nice touch). I would gladly hire him again and recommend him to others in the Valley."
Serving Otis, MA and surrounding areas
Approved
In business since 2000
Free estimates
Warranties offered
"I normally donâ  t write reviews, but I Felt the need to about this company, and it employees from start to finish I have never been so impressed ! We had replacement windows installed today everything was measured perfectly and all the windows were installed y Robert. What an amazing company and employee! Thank you Green Collar!"
+2
Serving Otis, MA and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"They were very prompt professional"
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