4.5 
33 *The Angi rating for Heating And Air Conditioning Service companies in Fitzwilliam, NH 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 Fitzwilliam, NH 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 07, 2026
Serving Fitzwilliam, NH 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 Fitzwilliam, NH 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 Fitzwilliam, NH and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"Good job at a good price"
+5
Serving Fitzwilliam, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Emergency services offered
Warranties 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 Fitzwilliam, NH and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"Exchanged messages with Mike to describe work needed, replace an outdoor faucet and shutoff value (previous faucet was leaking). He gave an estimate, reviewed work to be done. Replaced outdoor spigot with a frost-proof spigot, put on new value. Quick test and validation. Professional, efficient and happy with work done! Thank you Mike !"
Serving Fitzwilliam, NH and surrounding areas
Approved
In business since 1977
Free estimates
Emergency services offered
"Refrig repair was done efficiently and effectively. Electrician was knowledgeable, friendly and helpful."
Serving Fitzwilliam, NH and surrounding areas
Approved
In business since 2022
Free estimates
Small jobs welcome
"Andy came right out and was very professional, answered all our questions and did an outstanding job. We highly recommend A2K Electrical."
Serving Fitzwilliam, NH and surrounding areas
Approved
Free estimates
Credit card accepted
Offers commercial services
"The new walk-in shower looks and works great! I would definitely recommend AS Plumbing and Heating!"
Serving Fitzwilliam, NH and surrounding areas
Approved
Free estimates
Credit card accepted
"Very satisfied with work done"
Serving Fitzwilliam, NH and surrounding areas
Approved
Free estimates
Credit card accepted
Peak Mechanical LLC is your trusted HVAC specialist serving the region from Keene to Nashua. We provide comprehensive climate solutions, with a primary focus on A/C installation and repair, as well as the expert installation and service of gas boilers, and gas or electric furnaces. From high-efficiency heat pumps and ductless mini-splits to precision gas piping and thermostat services, our team ensures your home stays comfortable year-round with reliable, professional mechanical expertise.
+5
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