Best Heating & Air Conditioning / HVAC In Derry

“My experience with Jeremy was outstanding. I didn’t detect any bs regarding the best solution to replacing our 38 year old system before the heating season. I wasn’t disappointed in the results. On installation day (Wednesday 15 October) Ben and Kaleb showed up on time and completed removal of our existing system and installed the new unit all within 5-1/2 hours. I was very impressed with their professionalism and attention to detail.“

“I gave 5 stars so you would read this. THIS COMPANY SUCKS!! THEY DID A BIG OLE BAIT AND SWITCH. COST ME 4200 MORE THAN QUOTED ON THE PHONE!!“

“Duval and Erin were fantastic!
Excellent service. Positive. Helpful and answered all my questions with total professionalism.“

“Jason was professional and thorough with the work at my house. I would absolutely recommend Conerstone for clean quality work. I had 21 vents cleaned.“

“Hatfield Brothers replaced my furnace and recently replaced my water pressure tank. They are honest, reliable, and do an excellent job.“

“We first called on Cal’s, a few years ago, when our AC was only blowing hot air. I was expecting a huge cost to repair. Cal’s promptly arrived and quickly determined is was a blown capacitor. In and out for about $100 when I was anticipating several hundred. Fast forward to last Thursday. We had decided to upgrade our AC to a three zone mini split, and a new more efficient condenser for the high velocity system we use for the second floor. In our minds, there was only ONE company to call. Cal’s came out with less than a two week lead time to get on their schedule. They performed the work in less than 5 hours. Right now we are sitting in our house, nice and cool, while it’s 93 degrees outside. One of our dogs was so cool, her nose was running! We have found, through our experience, that Cal’s is a very trustworthy, honest, prompt company with reasonable prices and expert service and installation.“

“They came called head of time and arrived on time and fixed my faucet in the utility room that was leaking, cleaned up all the mess, then went outside and installed a new faucet outside.they asked if there was anything else I would need their services..I would recommend them if anyone needs plumbing done..Services: Faucet repair“

“I have used Mike for at least 8 years. Boiler, Furnace, Bathroom Plumbing, Pool Heater install, etc. Top notch every time“