Contra Costa Heating & Air Conditioning

Exceptional HVAC Service
Supplying your family with trustworthy comfort since 1970

Our properties

Insured
Family owned
Emergency services
Locally owned
License #970192
Contra Costa Heating & Air Conditioning team in San Leandro, CA - people or person

About Us

Founded in 1970, Contra Costa Heating & AC has been family owned and operated for over five decades. We’re built on old-fashioned values—delivering high-quality HVAC services at honest, competitive rates—and those principles still guide everything we do today.

Our licensed, insured technicians are knowledgeable, professional, and efficient on every job. We specialize in innovative, high-performance Lennox® HVAC systems and stay up to date on the latest equipment and repair technology to restore comfort quickly and reliably.

As a Dave Lennox Premier Dealer, we’re recognized for exceptional service and craftsmanship. We work closely with each customer to provide energy-efficient, budget-friendly solutions tailored to their home or business.

From residential and commercial installations to repairs and remodels, our team gets the job done right the first time. Proudly serving the Bay Area, we’ve built our reputation on satisfied customers, referrals, and long-lasting relationships.

Discover the difference experience and integrity make. Call (415) 483-4933 or schedule an appointment online today.

What we are best at

Our Services

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Reviews

Take a look at what your neighbors are saying about us.

  • out of 5 stars

    Had a really good experience with Contra Costa Heating & Air Conditioning. We went through their Costco partnership and had a new HVAC system installed in late Oct / Nov 2025. The install was smooth end to end, and the crew was professional, punctual, and easy to work with. They also removed an old thermostat and patched the drywall. The first patch wasn’t great, but I called them back and they sent someone out who fixed it properly. The wall looks good as new now. After the install, I noticed some uneven temperatures between zones. They came out, checked everything, and confirmed the thermostats were reading accurately. They even offered to replace them. I ended up resolving it myself by adjusting the system’s circulation settings, which improved airflow and evened things out. On pricing, their initial quote came in higher than a few other vendors. That’s mainly because they use higher quality equipment and components. When I asked other vendors to match the same setup, the pricing ended up pretty close anyway. Contra Costa also offers strong guarantees on workmanship and parts, which gave me more confidence going with them. If you’re just trying to get the cheapest install possible, they’re probably not the right fit. But if you care about doing it right and getting a solid system that will hold up over time, they’re a great choice. Overall, very happy with how everything turned out. The system is working well, and they were responsive whenever I needed follow-up.

    Roney Michael Home Owner
    Google
  • out of 5 stars

    I had a great experience with Contra Costa Heating & AC. I was referred to them from Costco and they went above and beyond each step of the way. Tony came over to my house for an initial inspection and was very professional. I applaud the team at Contra Costa heating & AC!

    GG GG Home Owner
    Google
  • out of 5 stars

    The installation was clean, professional, and done with minimal disruption.

    Aariel Gh 2021 Home Owner
    Google

Frequently asked questions

Just like you need to take your car in to the shop for regular tune-ups, such as oil changes or looking at possible problems, your home comfort system should be subject to the same kind of attention. Routine maintenance by a skilled technician provides numerous benefits to your HVAC equipment, which can help your systems operate efficiently and prevent costly breakdowns.

The cost can range depending on the equipment size and different features, so we recommend contacting Contra Costa Heating & AC at 510-916-2218 to receive a quote.

Contra Costa Heating & AC has an assortment of brands and models that are more efficient than ever and make it easier to find the right fit for your home. There are innovative systems that make heating or cooling your home more automatic, operating similar to cruise control to make small adjustments to help meet your comfort demands with energy efficiency. Give us a call at 510-916-2218 to learn more about the technology we offer.

Proudly serving San Leandro, CA and surrounding areas
San Jose, San Francisco, Oakland, Concord, Berkeley, Alameda County, Alamo, Burlingame, Castro Valley, Danville, Dublin, Livermore, Moraga, Orinda, Pleasanton, San Mateo, San Ramon, Union City, Walnut Creek

Ready to get started? Book an appointment today.