
Arbor is a subsection of Brentwood in Contra Costa County. 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 Many of the old farms and orchards have been replaced by suburban developments since 1990.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 Discovery Bay, 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
Discovery Bay, 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 Discovery Bay, CA
Great experience
Carole - Discovery Bay, CA 94505
They were here within 2 hours of my phone call. Kept me in the loop. Very professional. At a good price.
Discovery BayCA94505 37.9175-121.6225



Brittany was great!
Michael - Discovery Bay, CA 94505
It was good
Discovery BayCA94505 37.8925-121.6075



Great service
Tierney - Discovery Bay, CA 94505
Fast clean service
Discovery BayCA94505 37.915-121.62




Brittany B.
Diagnosing a 2018 Goodman heat pump and fan coil in beautiful Discovery Bay, CA for one our our maintenance members. Certified installed the system 4 years ago and everything has been running well, only issue was with settings on the zone board. We are working with the client to address the older ductwork in the crawl space and attic to make the system more efficient. Thank you for choosing Certified Heating & Air Conditioning!

Jeremiah S.
It’s getting colder and colder! Our client in discovery bay is having his furnace maintenance done today. I love doing maintenances around this time of the year because we take care of issues before they are serious and it keeps you warm and your system happy!


Brittany B.
Repairing a 2003 York furnace in Discovery Bay, CA in the wonderful Lakeshore neighborhood. Successfully repaired the system, ensuring that the clients will be comfortable and warm in their beautiful home! Thanks for choosing Certified Heating and Air Conditioning!

Lucas G.
Performed regular maintenance. Discovered that system was not cooling home well. Rebalanced refrigerant levels and repaired damaged ductwork. Client happy with system performance.
Yvonne G.
Ac maintenance 28 point inspection and safety on the heater

Brittany B.
Performing diagnostic service on 2011 York condenser - fan motor is not functional at this time, only compressor motor is coming on. Condenser fan motor has failed due to previous power issue in Discovery Bay. Ordered new motor and will return to replace ASAP so clients can remain cool during brutally hot summers in this area. Recommend annual maintenance to be sure system has no further issues and allow us to catch small issues before they become big problems. Peace of mind is very important!

If you are searching for reliable heating and AC technicians in Discovery Bay, 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.
