ACS Air Conditioning Systems


In 1969, ACS Air Conditioning Systems opened its doors as a Carrier dealer with the idea of providing Bay Area families and businesses with heating & air conditioning comfort solutions that fit their lifestyles, and budgets. For the past 50 years, customers have come to rely on ACS Air Conditioning Systems for their Carrier equipment and quality installations, too. As the oldest Carrier dealer in the Bay Area, ACS is proud of our many referrals from satisfied and repeat customers in the area. We continue to be a Better Business Bureau A+ contractor year after year and are licensed, bonded and fully insured for our customer's protection. ACS is a Sheet Metal Workers Local 104 Union Shop, employing the highest trained installers and service technicians in the industry. As a Carrier Factory Authorized Dealer we are required to maintain a level of quality and professionalism to assure our customer's peace of mind in receiving the best possible system for their home or business.

Concord, Danville, Walnut Creek, Lafayette, Pleasant Hill, Pleasanton, San Ramon, Orinda, Moraga, Martinez

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Diana Byrns
Diana Byrns
19:55 20 Oct 21
Very professional, helpful. Their technician is really good. He solved my rental unit issues promptly. Definitely, if... you need repairs, call them. They don't replace it with a new unit for more profit. They repair well if they can more
Rebekah Navarro
Rebekah Navarro
02:45 23 Jun 21
Friendly, professional, knowledgeable. I'm a repeat customer and haven't been let down yet. I highly recommend them.
dave (none)
dave (none)
20:27 08 Jan 21
Very prompt reasonable and real professionals installing. Highly recommend
Dennis McAllister
Dennis McAllister
19:37 30 Oct 19
Helpful people
Cherie Ham
Cherie Ham
21:51 01 Aug 19
Timely and effective. I didn't get to meet my technician but I understand that he was pretty nice.
James Wilson
James Wilson
03:43 29 Jul 19
Nicest people I have ever met and very knowledgable installers and techs! Thanks for everything A.C.S!
19:35 10 Jul 19
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5151 Port Chicago Highway, Concord, CA, USA

(602) 755-7393

Monday 8AM–4:30PM
Tuesday 8AM–4:30PM
Wednesday 8AM–4:30PM
Thursday 8AM–4:30PM
Friday 8AM–4:30PM
Saturday Closed
Sunday Closed


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