
Dublin is a suburban city of the East Bay in California. It is located within the Amador Valley of Alameda County’s Tri-Valley region. Dublin is located in the Tri-Valley, many people take Bart or Drive to bigger cities near us to work, including San Francisco.
AC problems in Dublin, 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
Dublin, 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 Dublin, CA
Great Service!
Jose - Dublin, CA 94568
Very professional and knowledgeable.
DublinCA94568 37.7225-121.9275 Response from Certified Heating and Air Conditioning:
Hi there Jose! Thank you for your positive feedback! We are so happy Mateo was able to provide you with great service!




Excellent Service
G M - Dublin, CA 94568
Jerod was very professional kind and provided excellent service.
DublinCA94568 37.705-121.9425 Response from Certified Heating and Air Conditioning:
Hi there Gloria! Thank you for your positive feedback! We are so glad Jared was able to provide you with such great service during your Air Conditioning Maintenance!




Excellent service
Hanh - Dublin, CA 94568
Mateo is the best technician. He was thorough and efficient. He explained all the main points of my quartet maintenance service.
DublinCA94568 37.715-121.86 Response from Certified Heating and Air Conditioning:
Hello Hanhs, We are glad our teammate Mateo was able to provide great service on your annual maintenance. Mateo is a superstar! -Certified Customer Care Team




Awesome upbeat service!
Jaime - Dublin, CA 94568
Brittany was so friendly and explained everything that was wrong! Fixed it in a very timely matter, extremely friendly and very professional! Would highly reccomend!
DublinCA94568 37.71-121.91



Good service
Jian - Dublin, CA 94568




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