Serving Brentwood, Antioch, Walnut Creek, San Ramon, Danville, Martinez, Oakley, Pleasant Hill, Lafayette, Orinda, Moraga and beyond
Furnace Repair Company Contra Costa County
When your furnace starts acting up, immediate action is crucial to ensure your home stays warm and safe. Cali HVAC specializes in prompt, effective furnace repair services that address everything from minor issues to major malfunctions.
Give Cali HVAC a call for furnace repairs if your furnace is short-cycling or making strange sounds, your utility bills have increased unexpectedly, you’ve noticed a bad smell coming from your furnace, or your furnace won’t turn on at all. Cali HVAC’s skilled furnace repair technicians diagnose problems quickly and deliver solutions that last, ensuring your furnace operates efficiently when you need it most.
Experience the difference with Cali HVAC’s reliable furnace repair services by calling (925) 397-2170 today.
Contra Costa County Furnace Repair Call for More Information Today!925-397-2170
The technician Oleg was very professional and a great communicator.
Andreas Hausner
P"I would strongly recommend him"
Daniel was quick to identify the problem and fixed it at no extra cost.
Poh L
E"Daniel Was Awesome!"
Daniel was honest and just replaced a part. He will be my go-to moving forward for all our HVAC repairs/replacement needs.
EVA JOO
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
D"Honest company, quick service"
Honest company, quick service as well.
David Maturino
J"He couldn't have done a better job"
Daniel was incredibly helpful to explain our situation to me and my husband.
Jasmine Cohn
e"Very timely, friendly, and capable"
Very timely, friendly, and capable. Highly recommend!
ed blakey
M"Diagnosed the Problem and Repaired AC"
Oleg came per schedule, diagnosed the problem with the AC, and completed the necessary repairs.
Mo Dawud
S"Legit Service"
Called for a tune-up and ended up learning a bunch about my system.
Sean S.
m"Appreciate the professionalism"
Always appreciate the professionalism and response time from this team.
michael milshtein
R"Reliably Installed a New Heater and A/C"
I appreciated that honesty, and followed up with them months later when we needed our furnace and A/C replaced.
Ravi
M"Fast, Polite, and Professional"
Fast, polite, and knew exactly what they were doing. Great experience all around!
Myra Ellis
D"CALI HVAC Team Came the Same Day"
Daniel did a full diagnostic check and fixed the issue in no time.
Dora Campbell
B"Very Fast and Efficient Company"
Very fast and efficient company to work with.
Brandon Newcomb
One Happy Customer Here
The technician Oleg was very professional and a great communicator. Fixed my furnace without any issue. One happy customer here....
Andreas Hausner
I would strongly recommend him
My furnace gas heater was not working. Daniel was quick to identify the problem (due to switch valve) and fixed it. He goes beyond the repair service and fixed my fan noise as well as sealing the leaking airflow at no extra cost. I would strongly recommend him for his excellent work of service.
Poh L
Daniel Was Awesome!
Daniel was awesome! Someone you can trust. The other company was convincing me to change the furnace. Daniel was honest and just replaced a part. He will be my go-to moving forward for all our HVAC repairs/replacement needs. Hard to find great service, great character people nowadays. Thanks, Daniel, for being honest and for being reliable. I appreciate you!
EVA JOO
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.
jordan bell
Honest company, quick service
Honest company, quick service as well. Was able to get all my stuff done in a timely manner and extremely easy to communicate with.
David Maturino
He couldn't have done a better job
Daniel was incredibly helpful to explain our situation to me and my husband. He even came to just double-check everything was working a week later. He couldn't have done a better job. 5 stars!
Jasmine Cohn
Very timely, friendly, and capable
Very timely, friendly, and capable. No fuss, no miss - got the job done and pricing was very reasonable. Daniel was also very personable and knowledgeable. Highly recommend!
ed blakey
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
Legit Service
Called for a tune-up and ended up learning a bunch about my system. Legit service!
Sean S.
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
Reliably Installed a New Heater and A/C
Reliably installed a new heater and A/C unit. Had them visit several months earlier, and they didn't recommend work on another furnace we had.
I appreciated that honesty, and followed up with them months later when we needed our furnace and A/C replaced.
Ravi
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
CALI HVAC Team Came the Same Day
Our heater stopped working! CALI HVAC team came the same day. Daniel did a full diagnostic check and fixed the issue in no time. He even showed me pictures from inside the unit and explained everything in a very informative way. This company is an asset to our area!
Dora Campbell
Very Fast and Efficient Company
Called and got an appointment the same day. Very fast and efficient company to work with.
Brandon Newcomb
Why Trust Our 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.
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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