
Brentwood began as a community in the late 19th century. Brentwood began as a community in the late 19th century. The community is still known throughout the Bay Area for its agricultural products – primarily its cherries, corn and peaches. Many of the old farms and orchards have been replaced by suburban developments since 1990. Brentwood is increasingly residential, with the rate of population growth in the triple digits during the 1990s and 69% from 2000 through 2010. An official estimate showed the population increased nearly 21% during the period 2010 to 2016.
AC problems in Brentwood, CA and Contra Costa area seem to spring up at the worst possible time, creating a degree of urgency for them to be fixed. Luckily, your local Certified technician is more likely than not to diagnose and fix your problem on the first visit. We keep a large percentage of parts stocked at our warehouse, helping to ensure quality and fast turnaround time. We live up to our name, by offering a 24-Hour Fix-It Guarantee!
Is your AC unit blowing warm air? The most common causes are typically:
- An overdamping compressor
- Capacitor failure
- Low refrigerant
These can be interrelated issues. For example, a unit running on low refrigerant can put more issues on the compressor. Certified Heating and Air Conditioning has more than 20 years of experience in diagnosing and treating common AC problems.
Furnace problems in the East and North Bay area seem to spring up at the worst possible time, creating a degree of urgency for them to be fixed. Luckily, your local Certified technician is more likely than not to diagnose and fix your problem on the first visit. We keep a large percentage of parts stocked at our warehouse, helping to ensure quality and fast turnaround time. We live up to our name, by offering a 24-Hour Fix-It Guarantee!
Is your unit feeling colder than normal? There are many causes:
- An airflow issue
- Old/leaky ductwork
- Rodent issues
- Design problems
- Dirty air filters
Brentwood, CA Heating and Air Conditioning Services
Check out what our customers are saying about Certified Heating and Air Conditioning – Air Conditioning and Heating Services!
Local Reviews
for Brentwood, CA
Excellent service
Heidi - Brentwood, CA 94513
Very friendly, efficient , and knowledgeable !
BrentwoodCA94513 37.93-121.7 Response from Certified Heating and Air Conditioning:
Hi there Heidi! Thank you so much for your review!




Efficient and professional service.
Buck - Brentwood, CA 94513
Diego and Eric were very professional. They were able to diagnose the problem quickly and efficiently.
BrentwoodCA94513 37.9375-121.7225 Response from Certified Heating and Air Conditioning:
Hi Buck! Thank you so much for allowing Diego and Eric to perform a diagnostic on your system! We are so glad they were able to give you a positive experience!




Great company and solid service
Marcel - Brentwood, CA 94513
Response from Certified Heating and Air Conditioning:
We appreciate your kind words! Thank you so much for being a valued client.




Excellent
Daniel - Brentwood, CA 94513
Friendly, professional, honest and efficient
BrentwoodCA94513 37.9-121.735 Response from Certified Heating and Air Conditioning:
Hi Daniel, Thanks for sharing your review with us! -Certified Customer Care Team




Excellent Technitian
Jim - Brentwood, CA 94513
Matteo was knowledgeable, courteous, and efficient. Highest rating
BrentwoodCA94513 37.9675-121.7175 Response from Certified Heating and Air Conditioning:
Hello Jim, Thank you for sharing feedback on our great teammate Mateo! We are glad he was able to take care of your annual HVAC maintenance. -Certified Customer Care Team




Terrific job and they were early!!!!
Jim - Brentwood, CA 94513
Response from Certified Heating and Air Conditioning:
Hi Jim, Thanks for sharing your 5-star review with our team. -Certified Customer Care Team




Excellent service
Jackie - Brentwood, CA 94513
Response from Certified Heating and Air Conditioning:
Hi Jackie, Thanks for the review! -Certified Customer Care Team




Excellent Service
Jessica - Brentwood, CA 94513
Diego was very friendly and respectful. It was a pleasure to have him work on our home system today.
BrentwoodCA94513 37.9325-121.69 Response from Certified Heating and Air Conditioning:
Hello Jessica, Thank you for sharing your review with us. We are happy you enjoyed Diego as much as we do. We look forward to servicing you in the future. -Certified Customer Care Team




Excellent Service
Mary - Brentwood, CA 94513
Jeremiah was professional, punctual and thorough. His customer service was fabulous. Great job!
BrentwoodCA94513 37.9425-121.71 Response from Certified Heating and Air Conditioning:
Hello Mary, We love having Jemriah on our Team. We are glad he provided you with fabulous service on your HVAC system. -Certified Customer Care Team




Amazing service
Brian - Brentwood, CA 94513
Jared Warren was also part of this. The service was excellent and the fix was also painless. 10/10
BrentwoodCA94513 37.9225-121.69 Response from Certified Heating and Air Conditioning:
Hi Brian, Thank you for sharing your 5-star review with us. We are happy to know our teammates took care of you today with the furnace & air conditioning maintenance and were able to catch parts that may have been failing. We do our best to keep clients like you informed and happy. -Certified Customer Care Team




Galen S.
Got to go talk to an awesome client about replacement options. The client isn't prepared to move forward at this time but I am grateful for the opportunity and had a great time chit chatting!
Anthony M.
Spoke with client about replacement options for a full system replacement.
Jeremiah S.
In the Brentwood area performing an AC maintenance! This 7 year old train condenser is in great condition! During the maintenance, I noticed the dual capacitor was very low, which puts our customer at risk of having NO AC during the hot summer! Notified our customer, and he agreed it would be a great idea if we not only switched out the dual capacitor, but add a component that will preserve the life of the unit. After I installed these components, the AC unit ran perfect!


Jerod W.
Preformed a leak search on an ac condenser in the shadow lakes neighborhood of Brentwood looking forward to doing more work in the area.
If you are searching for reliable heating and AC technicians in Brentwood, give Certified Heating and Air Conditioning a try. We have established a solid customer foundation in Contra Costa county over the past four years because of our dedication to the customer backed by numerous guarantees. We are home of the FREE second opinion, so if you feel like you’ve been treated unfairly by another company, call us – our family-owned, family-run company will bring you in and treat you as our own.
