
Serving Derry, NH and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"Excellent. I heard of them through word-of-mouth. Once they were done with my service I signed up for their annual service plan."





+2


Serving Derry, NH and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"Excellent. I heard of them through word-of-mouth. Once they were done with my service I signed up for their annual service plan."





+2

Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 1932
Free estimates
Emergency services offered
"Switched services from Amerigas to PalmerGas. Rick and Nate completed the service transfer and made the process seamless. They were very pleasant to engage with and were very knowledgeable in their field of work. They also took extra care to make sure all my appliances were safe after the hookup and that I knew how to confidently recognize and address any potential problems that could arise with having propane as a fuel source. Very satisfied"





+11

Serving Derry, NH and surrounding areas
Approved (Corporate)
In business since 1967
Free estimates
Emergency services offered
"Diagnosis and repair were straightforward and the talented Mike, who has done other great work for us on our ACs, had a replacement pump in his truck. Swapped over in under an hour. Cost of the repair was quite high, mainly due to very high price they charged for the pump. A Taco pump that I could buy for $175 was priced on this repair at more than $500. I get that it was an urgent situation and I’m happy to pay reasonably for the response but that mark-up bothered me. I called the office, had a long talk with the owner; sadly, she offered no consideration at all. Yes, it’s hard to find and keep skilled techs, but now seems that most HVAC firms have a business model like a car dealer’s service dept, far more corporate, less flexible or customer-considerate."





+6

Serving Derry, NH and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"It went very well. They had a good price. They got everything done in one day. The workers were very polite and respectful in my property. I highly recommend them to all."





Serving Derry, NH and surrounding areas
Approved
In business since 2025
Free estimates
Small jobs welcome
"Very polite...knowledge at the job at hand Very clean after the job was done. "





+8
Serving Derry, NH and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
At Cool Air, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
From average costs to expert advice, get all the answers you need to get your job done.

The cost of replacing an AC unit fan motor depends on warranties, labor, season, and more. This cost guide covers everything you need to know about this HVAC part.

Discover the cost of window AC installation, exploring factors like unit size, labor rates, outlet installation, accessories, and disposal fees.

Budget for AC coil cleaning costs based on factors such as cleaning frequency, coil type, cleaning method, accessibility, ongoing maintenance, and more.

Need an AC Recharge? Here’s how much it costs, what factors affect cost, and what to expect.

Budget for AC capacitor replacement costs based on factors such as the capacitor type, size, labor, potential repairs, location, season, and more.

Wondering who installs whole-house humidifiers? Hire a licensed HVAC technician. Learn what they do, other pro options, and how to hire confidently