4.3 
156 *The Angi rating for Heating And Air Conditioning Service companies in Dover, 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 Dover, 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 14, 2026
Serving Dover, NH and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"very professional and did a thorough look over of the system."
+36
Serving Dover, NH and surrounding areas
Approved
In business since 2000
Free estimates
Warranties offered
"Kevin was prompt, professional and knowledgeable. I would recommend him to anyone in need of HVAC work."
+2
Serving Dover, NH and surrounding areas
Approved
Super Service Award Winner
In business since 1932
Free estimates
Emergency services offered
"Palmer Gas & Oil just did an entire replacement of the 20-year-old central HVAC + humidifier + thermostats two-zone system in my home with a new state-of-the-art total system and I could not be more pleased. From start to finish each employee was personable, extremely knowledgeable, very courteous, and the consummate professional. There is truth to the adage that you get what you pay for and I know I got the best. All Gold Stars!"
+11
Serving Dover, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Credit card accepted
"We love our new Installer Jake from Pure Temp Heating & Cooling and our new AC & Heating System he installed that can be adjusted through the Phone APP. Jake was very knowledgeable and did everything he said he would do. Thanks Jake, for Your Home Services and your Service in the Military."
Serving Dover, NH and surrounding areas
Approved
In business since 2008
Credit card accepted
Offers commercial services
"Patrick called Friday night and showed up at 7:15 AM on a Saturday morning (OMG) to repair a central A/C system that was icing up inside. I'm still waiting to hear from the other 2 companies that were listed in my area. I know they will call Monday which would mean myself and my disabled wife would spend a very uncomfortable weekend and probably longer because most HVAC companies don't work weekends and it usually takes at least a day to schedule an appointment. Not fun when the humidity is 65% and the temp is close to 80. Patrick did a great job, A/C is running like new. Will hire him again and recommend him in a heart beat. Prices are very reasonable. Hire him!"
+18
Serving Dover, NH and surrounding areas
Approved
In business since 2015
Free estimates
Customers say: True professional
"Gary and Tina were very professional and courteous and did an outstanding job clearing the two blocks in out dryer vent would highly recommend them"
Serving Dover, NH and surrounding areas
Approved
In business since 2015
Credit card accepted
Customers say: Quality work
"Cornerstone IAQ is simply excellent. They arrived exactly (to the minute) as they said they would, showed me before and after duct pix, and offered sound advice on other related actions I could take. They are worth every dollar spent. I recommend them to anyone needing their HVAC ducts cleaned. Hats off to Mike and Jason...."
+2
Serving Dover, NH and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"Service was immediate. They were here exactly when they said they would. Problem was quickly diagnosed and fixed."
+19
Serving Dover, 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 Dover, 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
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