Your heating system is one of the most important parts of your comfort (and safety!) at home, particularly in the cold winter months. For comprehensive heater services that cover everything from routine maintenance to emergency repairs and system replacements, Cali HVAC is your go-to source.
At Cali HVAC, our skilled heater service professionals are equipped to handle all your heating needs, ensuring your system runs efficiently and effectively. This can make all the difference in the efficiency of your system, affecting your utility bill and your heater’s ability to warm your home. Cali HVAC takes pride in delivering quality workmanship and exceptional customer service, making sure your home remains a cozy refuge against the cold.
From simple tune-ups to complete overhauls, Cali HVAC has you covered. Call (925) 397-2170 to schedule your heater service with our experts.
Concord Heating Services Call for More Information Today!925-397-2170
Daniel did a full diagnostic check and fixed the issue in no time.
Dora Campbell
G"Our System Works Great Again"
Cali HVAC quickly found and replaced a faulty heating element.
Glen K
D"Overall the Tech Was Good"
Overall the tech was good.
Dede Hodge
M"Not only were they responsive"
Not only were they responsive in coming out, but he always came when he said he would, and messaged me when on the way.
Marty F.
D"Professional and Honest"
These guys are professional and honest, which is very rare nowadays.
David Tishkoff
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
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
Fast and efficient service!
Fast and efficient service! My heater is working like new.
Caleigh Schrey
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
Our System Works Great Again
Our system stopped heating. Cali HVAC quickly found and replaced a faulty heating element. The system works great again. Thank you!
Glen K
Overall the Tech Was Good
I wish the outcome could have been better news about our heating unit, but overall the tech was good. We did ask for a new smart thermometer to be installed, and that was done. We found out that wasn't the problem with no heat, though. Will have to check around for the best price for that.
Dede Hodge
Not only were they responsive
As the weather started getting cold, I decided it was time to test my old gas furnace, and I found that it would not heat up—the igniter came on, but no gas was supplied. This happened a few years before, but I got it going by banging on the gas valve with my screwdriver handle as it was turning on, and I got it to work for a few years. This time, though, it just would not work, so I called Cali HVAC after checking reviews here and elsewhere. Oleg came out within a day, spent at least an hour or more, and found that the circuit board was not sending the voltage to turn on the valve, so he got a new board, installed it, and now the valve itself would not fire. So I needed both the board and the valve. They did not charge me for the extensive service call, unlike many others.
Before deciding what to do, I called a couple of other companies to get a ballpark estimate assuming this was the problem, and they were both higher, so I accepted Cali's bid. It took them a day to get the part, and Oleg returned to my house and replaced the parts, with no surprises.
Not only were they responsive in coming out, but he always came when he said he would, and messaged me when on the way. He was very informative and explained everything he did to determine the problem. Long ago I worked doing electronic repairs to stereo equipment, including fixing and modifying high-end test equipment for Ray Dolby's personal equipment (he was the inventor of Dolby Noise Reduction). So I know a bit about testing, and I performed the same tests as Oleg to confirm the problem. So I know they didn't oversell the service. I could have probably done some or all of the work myself, but I have no experience with gas appliances and didn't want to learn at my age (I'm retired for 10 years).
Marty F.
Professional and Honest
These guys are professional and honest, which is very rare nowadays. The guy who came to check on our broken heater told us exactly what the problem is, discussed with us all the options, and even showed his cost on the parts. Highly recommended.
David Tishkoff
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
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!
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
Do you offer emergency heating services?
Yes, we offer emergency heating services to ensure you’re never left in the cold. Our team is available 24/7 to address urgent heating issues and restore your system promptly. Your comfort and safety are our top priorities.
How often should I service my heating system?
It's recommended to service your heating system at least once a year. Regular maintenance can help identify potential issues early, improving system efficiency and extending its lifespan. Ideally, schedule your maintenance before the colder months begin.
What are signs my heater needs repair?
Common signs include unusual noises, uneven heating, higher energy bills, frequent cycling, and strange odors. If you notice any of these issues, it’s best to get your heating system checked by a professional to prevent further damage.
How can I improve my heating system's efficiency?
Regular maintenance, sealing leaks, upgrading insulation, and installing a programmable thermostat can improve your heating system's efficiency. Our experts can help assess your current system and recommend additional strategies for maximizing efficiency.
Free Estimate For HVAC Installation