Top Rated Hvac Contractors Serving San Quentin, CA

If you really care about choosing a quality hvac contractor, we’re here for you. Here’s your access to the best hvac contractors serving San Quentin including 94964 and 94974. These heating and air conditioning experts provide HVAC troubleshooting and heating system installations, and they also work on air conditioning, HVAC maintenance plans and furnace repair. For 22 years we’ve conducted the most accurate ratings and deepest research of local contractors, so you’ll be confident in choosing.

  • Last Updated Dec 05, 2025
  • 148,521 people sourced companies in Heating & Air Conditioning
    16,331 Verified Heating & Air Conditioning Customers Surveyed
16331
148521
1 of 4

Enviro Heating & Air Conditioning, Inc.

hidden

Enviro Heating & Air Conditioning, Inc. installs, repairs, and maintains all types of HVAC equipment for residential and commercial clients in Sonoma,...
Read More

Main Services

Heating & Air Conditioning
loarrowgo
Air Duct Cleaning
loarrowgo

Additional Services

HVAC Repair, Installation & Maintenance, Sheet Metal Fabrication

Coverage Areas

Sonoma County, Marin County, Napa County

Emergency 24/7
Emergency 24/7
Residential & Commercial
Residential & Commercial
Appointments Available
Appointments Available
Live Phone Call Answers
Live Phone Call Answers
Diamond Certified Video Profile
Heating & Air Conditioning - Enviro Heating & Air Conditioning, Inc. - Sonoma County
youtube
Diamond certified resource logo
Diamond Certified Company Report
Chris Street, President-Enviro Heating & Air Conditioning, Inc.
Chris Street, President
Expert Contributions
ratings icon
  • 179
  • Rating Surveys
video icon
  • 8
  • Photos
    & Videos
articles icon
  • 5
  • Researched Articles
    • Quick Connect
    Hours CLOSED NOW
    License:
    928565
    2 of 4

    Hassler Heating & Air Conditioning, LLC

    hidden

    Hassler Heating & Air Conditioning, LLC is leading the way in California's electrification efforts, providing comprehensive HVAC services that include...
    Read More

    Main Services

    Heating & Air Conditioning
    loarrowgo
    Home Energy Auditor
    loarrowgo

    Additional Services

    Central Ducted Heat Pump, Ductless Mini-Split Heat Pump, Water Heater (Standard, Tankless, Heat Pump, Electric Resistance), Furnace, and A/C Installations and Repairs, Home Energy Assessments and Home Energy Score (HES) Assessments, Energy Upgrade Measures (Building Shell)

    Brands

    Bosch, Carrier, Mitsubishi, Navien, Rheem Water Heaters

    Coverage Areas

    Alameda County, Contra Costa County, Marin County

    Family Owned
    Family Owned
    Established in 1999
    Established in 1999
    Residential & Commercial
    Residential & Commercial
    Financing Available
    Financing Available
    Diamond Certified Video Profile
    logo
    Diamond certified resource logo
    Diamond Certified Company Report
    Tim Hassler, General Manager-Hassler Heating & Air Conditioning, LLC
    Tim Hassler, General Manager
    Expert Contributions
    ratings icon
    • 288
    • Rating Surveys
    video icon
    • 30
    • Photos
      & Videos
    articles icon
    • 5
    • Researched Articles
      • Quick Connect
      Hours CLOSED NOW
      License:
      770180
      3 of 4

      Ongaro & Sons

      hidden

      Ongaro & Sons provides a complete range of plumbing services for residential and commercial clients in Sonoma and Marin Counties. In addition to servi...
      Read More

      Main Services

      Electrical Contractor
      loarrowgo
      Plumbing
      loarrowgo
      Heating & Air Conditioning
      loarrowgo

      Additional Services

      Plumbing, Heating & Cooling Service, Electrical Service, Repair & Installation, Indoor Air Quality, Water Heater Repair & Replacement, Sewer Cleaning & Replacement

      Brands

      American Standard, Trane, Mitsubishi

      Coverage Areas

      Sonoma County, Marin County

      Family Owned
      Family Owned
      Established in 1932
      Established in 1932
      Residential & Commercial
      Residential & Commercial
      Mobile Services Available
      Mobile Services Available
      Diamond Certified Video Profile
      Electrical Contractor - Ongaro & Sons - Sonoma County
      youtube
      Diamond certified resource logo
      Diamond Certified Company Report
      Ernie Ongaro, Co-owner-Ongaro & Sons
      Ernie Ongaro, Co-owner
      Expert Contributions
      ratings icon
      • 278
      • Rating Surveys
      video icon
      • 9
      • Photos
        & Videos
      articles icon
      • 5
      • Researched Articles
        • Quick Connect
        Hours CLOSED NOW
        License:
        215233
        4 of 4

        Kelly Plumbing & Heating, Inc.

        hidden

        Kelly Plumbing & Heating, Inc. installs the latest technology in forced air furnaces, heat pumps and air conditioning systems for residents of Marin C...
        Read More

        Main Services

        Heating & Air Conditioning
        loarrowgo

        Additional Services

        Central Heat Pump Systems, Forced Air Heating & Air Conditioning, Radiant Heat Boilers & Installations, Tankless & High Efficiency Water Heaters, Attic Fans, Air Duct Cleaning, Dryer Vent Cleaning, Duct Insulation, Heat Pump Water Heaters

        Brands

        Bradford White, Honeywell, Mitsubishi, Navien, Rinnai, Trane, Triangle Tube

        Coverage Areas

        Marin County, Sonoma County

        Family Owned
        Family Owned
        Residential Only
        Residential Only
        Appointments Available
        Appointments Available
        Live Phone Call Answers
        Live Phone Call Answers
        Diamond Certified Video Profile
        Heating & Air Conditioning - Kelly Plumbing & Heating, Inc. - Marin County
        youtube
        Diamond certified resource logo
        Diamond Certified Company Report
        Owners Jim and Anna Kelly are dedicated to customer service.-Kelly Plumbing & Heating, Inc.
        Owners Jim and Anna Kelly are dedicated to customer service.
        Expert Contributions
        ratings icon
        • 404
        • Rating Surveys
        video icon
        • 4
        • Photos
          & Videos
        articles icon
        • 5
        • Researched Articles
          • Quick Connect
          861 Sweetser Avenue, Novato, CA 94945
          Hours CLOSED NOW
          License:
          688049
          Learn how to choose a Heating & Air Conditioning and more…

          Diamond Certified Hvac Contractors Serve These San Quentin ZIP Codes

          94964, 94974

          Diamond Certified Hvac Contractors In San Quentin

          Diamond Certified hvac contractors serving San Quentin are rated an average of 4.6 out of 5 stars based on 2130 reviews of 77 rated hvac contractors.
          Diamond Certified hvac contractors in San Quentin Avg. Star Rating.

            Map of San Quentin, CA

            San Quentin was founded in 1852, and today, your 3,567 neighbors enjoy dog walking, clamming, cafes, cider tasting and creekside walks. San Quentinians use Diamond Certified HVAC contractors for air conditioner repair, furnace repair, air filtration, mini splits, water heater repair, and more.

            Frequently Asked Questions for Heating & Air Conditioning in San Quentin, CA
            Q: What are clients of Diamond Certified hvac contractors saying about contractors in San Quentin, CA?
            A: Verified Enviro Heating & Air Conditioning, Inc. Customer, one of 179
            "They do good quality work, but there were some scheduling issues we had to deal with. Nothing really" -Jacob L.
            All Survey Responses for Enviro Heating & Air Conditioning, Inc.
            Verified Burkell Plumbing, Inc. Customer, one of 396
            "They were very responsive, and they came back until it was done right. I liked that they came back multiple times to make sure it was working properly." -Brian G.
            All Survey Responses for Burkell Plumbing, Inc.
            Verified Kelly Plumbing & Heating, Inc. Customer, one of 350
            "I would recommend them. The service is always quick and the guys are friendly. I think the professionalism of the guys when they are inside the house, very respectful" -Emily V.
            All Survey Responses for Kelly Plumbing & Heating, Inc.
            Verified Ongaro & Sons Customer, one of 278
            "They're honest and very helpful. I liked that that the questions I had I got real answers and not the kind of answers that someone who just trying to sell something would provide." -Nick S.
            All Survey Responses for Ongaro & Sons
            Q: What are some of the most popular brands that Diamond Certified hvac contractors use when working with San Quentin residents?
            A: Diamond Certified hvac contractors use top-quality brands like Ruud, Carrier, Daikin, Lennox and Maytag.
            Q: What types of furnace repair do hvac contractors offer?
            A: HVAC contractors offer a variety of troubleshooting services, such as diagnosing issues with HVAC systems, inspecting components, and repairing or replacing components that are not functioning properly. They can also help diagnose problems with air flow, identify energy efficiency issues, check for proper refrigerant levels, and assess system performance. In addition, they can provide advice on preventative maintenance, such as changing air filters and cleaning ducts.
            Q: Can Diamond Certified hvac contractors work with Carrier products and similar items so I can get HVAC troubleshooting in San Quentin?
            A: Yes, Diamond Certified HVAC contractors can work with Carrier products and similar items to provide HVAC troubleshooting in San Quentin.
            Q: What did people search for when they wanted to find the best quality hvac contractors in San Quentin?
            A: Hvac Ductwork
            Air Conditioning
            Ac Tune Ups
            Hvac Maintenance Plans
            Ac Tune Ups

            Related Searches in San Quentin, CA

            Search Heating & Air Conditioning in Nearby Locations

            Nearby Search Results

            Diamond Certified Companies Serving San Quentin, CA

            Browse Types of Diamond Certified Companies Serving San Quentin, CA

            View the Full Diamond Certified Guide to Heating & Air Conditioning