Connolly Heating and Air Conditioning


Since 1992 we have provided; Full service Heating and Cooling repair, installation, replacement (all brands), duct repair, cleaning and design and replacements (all types) IAQ, whole house filtration systems, zoning, vent ducting, Solar PV systems, tankless hot water heaters, wifi thermostats both ducted and ductless mini-splits, heat pumps, dual fuel systems and VRF.

Walnut Creek, Pleasant Hill, Concord, Lafayette, Moraga,Orinda, Danville, Alamo, Clayton, Pittsburg, Antioch, Brentwood.

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Vincent Luu
Vincent Luu
19:43 13 Jan 22
We had Chris come in for an HVAC inspection for a real estate transaction; he was very detailed, explained everything... thoroughly, and very honest. Stacy was also very helpful in communicating/answering questions and getting us the report back in a timely manner to meet our deadlines. Highly recommend the Connolly team to any realtors looking to get an inspection or even if you are homeowner looking to get an honest assessment of your HVAC/ducting more
Jennifer Hurley
Jennifer Hurley
19:28 25 May 21
I highly recommend Connolly Heating and Air Conditioning! Brian came out and made sure we understood the process,... options, and financing. Roman, Russ, and Colin were efficient and professional and everything was completed right on time! At the end of every day, they cleaned up so well you could hardly tell they had been here and they were very conscientious about keeping my pets safe and wearing more
Ken Johnson
Ken Johnson
23:28 12 May 21
Wow! Colin and Nela H did a fantastic job on our new A/C. They were fast, professional and they did a grrrrreat job. ... They said they could do the job on one day and they were done by 4 pm. So happy with them and the new A/Cread more
Ramona Marks
Ramona Marks
15:01 29 Mar 21
We replaced a 30+ year old furnace, added new central air, replaced old ducts, and insulation. We couldn't be happier... with the work that was done. The team, Nick, Colin, Russ, and Raul were very professional and knew their stuff. We prefer to do business with a family owned company. Give them a call for a quote, you may even get more
Karen Westernoff
Karen Westernoff
23:18 21 Jan 21
More great service from Chris, the tech that came out today to service my furnace that was not blowing warm air.... Diagnosed and fixed in less than 15 minutes! Always explains what he did such a pleasure to have such knowledgeable and respectable techs. Always go with them anytime I have issues! Karen more
Mike Scrabis
Mike Scrabis
04:46 20 Aug 20
We have used Connolly Heating and Air for years and have always had amazing service. Today, however, they REALLY went... above and beyond so I thought I’d do what I should have done a long time ago... give them a HUGE shout-out! They are one of the most professional, efficient, and responsive companies I have ever dealt with and I highly recommend them to anyone looking for a trustworthy, honest, and empathetic organization. You will not be disappointed! Norm and his entire team are truly top-notch!!!read more
Christie Wells Cooper
Christie Wells Cooper
00:58 14 Sep 19
This company came through for us with flying colors! They supplied a competitive bid and followed through on their... delivery. Even though they expected to complete the job in two days, they finished in one day. They completed everything as expected, installing a new heater and air conditioner. It works great! Highly recommend them!read more
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428 N Buchanan Cir, Pacheco, California, USA

(925) 281-5847

Monday 8AM–5PM
Tuesday 8AM–5PM
Wednesday 8AM–5PM
Thursday 8AM–5PM
Friday 8AM–5PM
Saturday Closed
Sunday Closed


  • Air Conditioning
  • Ductless Systems
  • Heating
  • Heat Pumps
  • Indoor Air Quality
  • Zoning Controls