Serving Brentwood, Antioch, Walnut Creek, San Ramon, Danville, Martinez, Oakley, Pleasant Hill, Lafayette, Orinda, Moraga and beyond
Air Conditioning Repair Company Contra Costa County
Nothing disrupts your life quite like an AC breakdown. That's where Cali HVAC comes in, offering prompt and professional air conditioner repair services to get your system running smoothly again—so you can get back to your day.
Cali HVAC’s friendly and professional team tackles each repair with care, using the latest tools and techniques to ensure lasting solutions. We can repair all types of air conditioning systems and are often able to troubleshoot and fix the problem on the spot. From handling minor issues to complete breakdowns, Cali HVAC is there to get the job done right!
With Cali HVAC, you can expect a commitment to excellence and a dedication to restoring your comfort quickly and safely.
Facing AC troubles? Reach out to Cali HVAC at (925) 397-2170 for expert repair services that keep you cool and comfortable.
Contra Costa County AC Repair Call for More Information Today!925-397-2170
Oleg came per schedule, diagnosed the problem with the AC, and completed the necessary repairs.
Mo Dawud
m"Appreciate the professionalism"
Always appreciate the professionalism and response time from this team.
michael milshtein
M"Fast, Polite, and Professional"
Fast, polite, and knew exactly what they were doing. Great experience all around!
Myra Ellis
J"Diagnosed and Repaired My HVAC"
Daniel assessed my system and within a short period of time diagnosed and repaired my HVAC, charging me only $400!
Jo
L"I Fully Trust This Company"
I fully trust this company and their wonderful, competent technicians to be there for me any time.
Linda Storhoff
K"Cool Comforts of My Home Restored"
My equipment was operational in no time thanks to the technician's expertise and efficiency.
Katherine Oliver
A"Quick and reliable repair service"
Quick and reliable repair service.
Allen Beach
D"Really Happy With the Outcome"
Their specialist identified the problem swiftly and offered a reasonably priced fix.
Darryl Parker
c"I Would Use Them Again!!"
They had the lowest service fee; great customer service and a great technician.
cortiz442
B"I Highly Recommend Cali"
He was very friendly and professional and gave me some idea about potential cost for future upgrading my AC system.
Br Kia
P"Really Pleased with CALI HVAC's Service"
My AC was up and running quickly thanks to their professionalism and promptness.
Paula Murray
A"Great service, would recommend"
Great service, would recommend to others.
Alex Katser
G"Very professional and knowledgeable"
Very professional and knowledgeable. Will recommend them to all my friends!
Galina
E"The maintenance crew at Cali HVAC is top-notch"
They showed up right on time, did a full inspection of my system, and even cleaned out the filters.
Eugene Shaw
J"I Couldn't Be Happier With the Service"
From the start, communication was excellent; Daniel was incredibly responsive and answered all my questions quickly.
Julie Chow
G"Informative, Clear, and Concise Estimate"
Efficient, clean work and very competitive pricing.
George Brooks
C"Fast and efficient service!"
Fast and efficient service!
Caleigh Schrey
B"Very Professional"
Very thorough in diagnosis and repair.
Brian Barone
A"Honest Diagnosis and Thorough Explanations"
They come quickly to my house, give honest diagnosis and give thorough explanations as to what's wrong.
Anna Reid
B"Excellent service, professional"
Excellent service, professional and fixed the problem efficiently.
Bob Berggren
s"Excellent Experience With Cali HVAC Inc"
The installation process was smooth, efficient, and completed with great attention to detail.
sujay arun
L"Totally Professional and Reassuring"
How reassuring to know I can rely on this company whose owner actually answers the phones!
Linda
C"What a Great Professional Job"
What a great professional job Tom and the crew did for us today!
Candis Kattenburg
L"They Are a Plumbing Company Dream Team"
I can truly say here that they are a plumbing company dream team.
Linda Storhoff
M"Timely, Efficient, and Stand by Their Warranty"
Timely, efficient, and stand by their warranty service.
Marcia E. Allender
R"Professional, Knowledgeable, Experienced"
Words I would use to describe my mini split installation are professional, knowledgeable, experienced, friendly, and timely.
Ray Chin
C"Fantastic Service and Price"
Fantastic service and price. The price for the equipment and labor was very reasonable.
Chett Salzman
C"Finding CALI HVAC Felt Like a Win"
They showed up when they said they would, diagnosed the problem fast, and didn’t push for extras I didn’t need.
Charles Baker
H"They Are Very Knowledgeable"
They followed up on whether it was working perfectly and came back quickly when we needed more.
Harlan Griswold
j"Very quick and flexible service scheduling"
Really appreciate he was able to help my tenants with just a quick explanation over the phone.
jordan bell
Diagnosed the Problem and Repaired AC
Oleg came per schedule, diagnosed the problem with the AC, completed the necessary repairs, checked the unit, and found it was working fine. Thank you, Oleg.
Mo Dawud
Appreciate the professionalism
Thank you for fixing my problems so quickly, literally an hour after I reported the issue with my AC. Always appreciate the professionalism and response time from this team.
michael milshtein
Fast, Polite, and Professional
Had CALI HVAC out for an HVAC system repair in Concord — fast, polite, and knew exactly what they were doing. They explained everything clearly and even gave me tips on basic A/C maintenance. Great experience all around!
Myra Ellis
Diagnosed and Repaired My HVAC
I brought this company on to help with my HVAC estimate, and after being provided a couple of misleading quotes, I had so much misinformation I believed I needed a whole new HVAC system. Daniel walks in, very matter-of-factly assessed my system, and within a short period of time diagnosed and repaired my HVAC, charging me only $400! My god, I was worried about having to come up with $10k–$20k. Thanks, Daniel!
Jo
I Fully Trust This Company
I had a request for service on my A/C unit after 5 p.m., and Cali HVAC sent a technician right out without hesitation. The owner is trustworthy, reliable, and pleasant. I fully trust this company and their wonderful, competent technicians to be there for me any time.
Linda Storhoff
Cool Comforts of My Home Restored
When my air conditioner stopped down in the thick of summer, I was sweating profusely. Fortunately, I was able to locate a trustworthy heating and conditioning company that promptly dispatched someone. My equipment was operational in no time thanks to the technician's expertise and efficiency. In no time, I was back to relishing the cool comforts of my home, and for that, I am incredibly thankful.
Katherine Oliver
Quick and reliable repair service
Quick and reliable repair service. The technicians were knowledgeable and professional.
Allen Beach
Really Happy With the Outcome
My air conditioner was just fixed by CALI HVAC Inc., and I'm really happy with the outcome! Their specialist identified the problem swiftly and offered a reasonably priced fix. They did a great job fixing the AC, and they also gave me some maintenance advice.
Darryl Parker
I Would Use Them Again!!
I took a chance with this company, having never used them before. My air conditioner stopped working. It was Friday… hard to find anyone to come out before Tuesday! I found them on Yelp. They had the lowest service fee; great customer service and a great technician. Even my neighbor, who is pretty handy himself, was impressed! I would use them again!!
cortiz442
I Highly Recommend Cali
I called several 24/7 HVAC companies Friday night to schedule an AC unit repair. None of the local companies were willing to do it for Saturday, although their diagnostic visit costs were high. I called Cali; they scheduled me for Saturday morning, and 5 minutes later I received the schedule confirmation text. Saturday morning I received another text telling me the technician was on the way. The technician repaired my AC unit. He was very friendly and professional and gave me some idea about potential cost for future upgrading my AC system. I highly recommend Cali for their service quality and very reasonable price.
Br Kia
Really Pleased with CALI HVAC's Service
I was really pleased with CALI HVAC's service when they recently came out to fix my air conditioner! My AC was up and running quickly thanks to their professionalism and promptness. The experienced and amiable expert took the time to describe the problem and provide advice on how to keep it from happening in the future.
Paula Murray
Great service, would recommend
We requested diagnostic service for our AC, and Oleg was able to come out on Saturday. Great service, would recommend to others.
Alex Katser
Very professional and knowledgeable
My A/C was fixed and they replaced my air filter for free. Very professional and knowledgeable. Will recommend them to all my friends!
Galina
The maintenance crew at Cali HVAC is top-notch
The maintenance crew at Cali HVAC is top-notch. They showed up right on time, did a full inspection of my system, and even cleaned out the filters. Everything is working great now, and they gave me tips for the future too. Solid service all around!
Eugene Shaw
I Couldn't Be Happier With the Service
I recently had my furnace and air conditioner replaced, and I couldn't be happier with the service. From the start, communication was excellent; Daniel was incredibly responsive and answered all my questions quickly.
The team arrived exactly on schedule and managed to finish the entire installation in a single day, just as promised. Their pricing was reasonable and honest, with no hidden fees or surprises at the end. Beyond their technical skills, the crew was very friendly and Daniel took the time to explain exactly how the new system works.
They also did a great job cleaning up, leaving no debris behind. If you’re looking for a professional, tidy, and punctual contractor, I highly recommend them!
Julie Chow
Informative, Clear, and Concise Estimate
Informative, clear, and concise estimate. Efficient, clean work. And very competitive pricing. Plus nice people with good communication skills.
George Brooks
Fast and efficient service!
Fast and efficient service! My heater is working like new.
Caleigh Schrey
Very Professional
Very professional. Fast, on-time response. Very thorough in diagnosis and repair. Oleg was great to work with. I would definitely recommend this company. Thank you.
Brian Barone
Honest Diagnosis and Thorough Explanations
This is the 3rd time I have used Cali HVAC. They come quickly to my house, give honest diagnosis and give thorough explanations as to what's wrong. They also call later in the week to see how the system is working. We will be using their services in the future.
Anna Reid
Excellent service, professional
Excellent service, professional and fixed the problem efficiently. Thanks!
Bob Berggren
Excellent Experience With Cali HVAC Inc
I had an excellent experience with Cali HVAC Inc when they installed a new HVAC system in my home. The team demonstrated impressive knowledge of the equipment, ensuring I understood my options and felt confident in my choice. The installation process was smooth, efficient, and completed with great attention to detail. Their pricing was reasonable, offering great value for the quality of service provided.
Cali HVAC Inc went above and beyond by following up to ensure the county inspection corrections were handled promptly and professionally. I’m truly impressed with their commitment to customer satisfaction. A special shoutout to Daniel and Tom for their exceptional service and support throughout the process. I strongly recommend Cali HVAC Inc to anyone in need of HVAC services!
sujay arun
Totally Professional and Reassuring
Tom, the technician/plumber for Cali HVAC, was here as scheduled, was totally professional, and eagerly answered my many questions. This was not a follow-up call because all previous HVAC work had been completed. I just needed some additional plumbing work to be done in my home, and the owner graciously accommodated me. How reassuring to know I can rely on this company whose owner actually answers the phones! Thank you, Cali HVAC!
Linda
What a Great Professional Job
What a great professional job Tom and the crew did for us today! Thanks oodles! Please send cost for replacing air and heat.
Candis Kattenburg
They Are a Plumbing Company Dream Team
As has always been the case, Cali HVAC came through once again when I needed plumbing services. The Contra Costa Water District had informed me that I had a continuing leak in the home, and the rep sent out to inspect could not determine where the leak was. So, I called Cali HVAC, who came the next morning, pinpointed the problem, and quickly repaired it. They had installed my HVAC system last year, and it meant so much to have a reliable, courteous, totally professional plumbing/HVAC company. I can truly say here that they are a plumbing company dream team. And get this: when you call, there's no AI robot, no message machine, no waiting for a call-back. Daniel, the owner, actually answers the phone!
Linda Storhoff
Timely, Efficient, and Stand by Their Warranty
Timely, efficient, and stand by their warranty service. And friendly. Very impressed with Tom's help! 👍
Marcia E. Allender
Professional, Knowledgeable, Experienced
Words I would use to describe my mini split installation are professional, knowledgeable, experienced, friendly, and timely. Would use again.
Ray Chin
Fantastic Service and Price
Fantastic service and price. I purchased new equipment and it is installed and working. Also, the price for the equipment and labor was very reasonable.
Chett Salzman
Finding CALI HVAC Felt Like a Win
After dealing with a few sketchy HVAC companies, finding CALI HVAC felt like a win. They showed up when they said they would, diagnosed the problem fast, and didn’t push for extras I didn’t need. Honest folks.
Charles Baker
They Are Very Knowledgeable
What I like about them is they are very knowledgeable, but more than that, they care about getting the job done to our satisfaction. They followed up on whether it was working perfectly, and came back quickly when we needed more. Several other HVAC companies came out, but didn't really fix the problem, or follow up. I highly recommend them.
Harlan Griswold
Very quick and flexible service scheduling
Very quick and flexible service scheduling. Really appreciate he was able to help my tenants with just a quick explanation over the phone. Billing was very convenient and fair pricing. Would recommend to anyone in need of HVAC services.
Get a free estimate with every HVAC system installation. Give us a call to learn more!
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Valid
Nov 1, 2025
- Apr 30, 2026
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Why Choose Cali HVAC
At Cali HVAC, we keep homes and businesses in Concord and the surrounding Contra Costa County communities comfortable year-round. Our licensed, experienced technicians deliver fast, dependable heating, cooling, and air quality solutions tailored to your needs—and we stand behind every job we do.
Why Choose Us:
Prompt, reliable service with same-day and weekend availability
Skilled, fully trained technicians with years of hands-on experience
Flexible payment plans, financing options, warranties, and free estimates
Clear communication from start to finish on every project
Carrier Factory Authorized Dealer with access to premium equipment and resources
Comprehensive residential and commercial HVAC and air quality services
Premium Equipment, Lasting Comfort
Carrier Factory Authorized Dealer with top-tier systems.
Comfort That Fits Your Budget
Financing, payment plans, warranties, and free estimates.
Expert, Licensed Technicians
Factory-trained, fully licensed pros for every HVAC job.
Fast, Reliable HVAC Service
Same-day service, weekend appointments, and on-time arrivals.
Cali HVAC FAQ
Can regular AC repair extend its lifespan?
Yes, addressing issues promptly and performing regular maintenance can significantly extend your AC unit's lifespan by reducing strain and preventing major breakdowns.
What should I do if my AC unit stops working suddenly?
First, check the thermostat, power supply, and breaker. If everything appears normal but the unit doesn't work, contact a professional for a diagnostic check and repair service.
Is it expensive to repair an AC unit?
Repair costs depend on the issue's complexity and parts required. We provide detailed estimates before starting work to keep you informed and make repairs affordable.
How long does an AC repair usually take?
Repair time varies depending on the issue. Simple repairs might take a few hours, while complex problems may require longer. We'll assess the problem and give you an estimated timeline.
Free Estimate For HVAC Installation