Top Rated Hvac Contractors Serving Novato, 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 Novato including 94947, 94945, 94949, 94948 and 94998. These heating and air conditioning experts provide cooling system installations and ventilation systems, and they also work on HVAC repairs, ductless heating and cooling systems and mini splits. 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
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Enviro Heating & Air Conditioning, Inc.

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

Heating & Air Conditioning
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Air Duct Cleaning
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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
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Diamond Certified Company Report
Chris Street, President-Enviro Heating & Air Conditioning, Inc.
Chris Street, President
Expert Contributions
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  • 179
  • Rating Surveys
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  • 8
  • Photos
    & Videos
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  • 5
  • Researched Articles
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    Hours CLOSED NOW
    License:
    928565
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    Ongaro & Sons

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

    Electrical Contractor
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    Plumbing
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    Heating & Air Conditioning
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    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
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    Ernie Ongaro, Co-owner-Ongaro & Sons
    Ernie Ongaro, Co-owner
    Expert Contributions
    ratings icon
    • 278
    • Rating Surveys
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    • 9
    • Photos
      & Videos
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    • 5
    • Researched Articles
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      Hours CLOSED NOW
      License:
      215233
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      Hassler Heating & Air Conditioning, LLC

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

      Heating & Air Conditioning
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      Home Energy Auditor
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      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
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      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
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      • 5
      • Researched Articles
        • Quick Connect
        Hours CLOSED NOW
        License:
        770180
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        Kelly Plumbing & Heating, Inc.

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

        Heating & Air Conditioning
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        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
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        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 Novato ZIP Codes

          94947, 94945, 94949, 94948, 94998

          Diamond Certified Hvac Contractors In Novato

          Diamond Certified hvac contractors serving Novato are rated an average of 4.6 out of 5 stars based on 2191 reviews of 77 rated hvac contractors.
          Diamond Certified hvac contractors in Novato Avg. Star Rating.

            Map of Novato, CA

            Novato was founded in 1856, and today, your 59,919 neighbors enjoy reading, dog walking, craft workshops, astronomy and quad biking. Novatans use Diamond Certified HVAC contractors for HVAC upgrades, ductless heating and cooling systems, HVAC maintenance plans, HVAC repairs, AC tune ups, and more.

            Frequently Asked Questions for Heating & Air Conditioning in Novato, CA
            Q: What are clients of Diamond Certified hvac contractors saying about contractors in Novato, CA?
            A: Verified Burkell Plumbing, Inc. Customer, one of 396
            "They are quality. His straightforwardness" -Danniel K.
            All Survey Responses for Burkell Plumbing, Inc.
            Verified Ongaro & Sons Customer, one of 278
            "They seem to be competent and reliable. They knew what they were doing." -Denise M.
            All Survey Responses for Ongaro & Sons
            Verified Enviro Heating & Air Conditioning, Inc. Customer, one of 179
            "A little expensive but totally worth it, they are professional and go out of their way to help you. Their professionalism" -Sharon K.
            All Survey Responses for Enviro Heating & Air Conditioning, Inc.
            Verified Kelly Plumbing & Heating, Inc. Customer, one of 350
            "They are very reliable and honest. I feel very confident with their work. The people they send are very pleasant people. They are very reliable." -David E.
            All Survey Responses for Kelly Plumbing & Heating, Inc.
            Q: What are some of the most popular brands that Diamond Certified hvac contractors use when working with Novato residents?
            A: Diamond Certified hvac contractors use top-quality brands like Rheem, Armstrong Air, Ruud, Mitsubishi Electric and Heil.
            Q: What types of mini splits do hvac contractors offer?
            A: HVAC contractors offer a wide range of indoor air quality services, including air filtration, air purification, and dehumidification. Air filtration removes dust, dander, and other particulates from the air, while air purification systems eliminate odors, smoke, and other contaminants from the air. Dehumidification helps reduce humidity levels in the home, which can improve comfort and reduce the risk of mold growth. Additionally, many HVAC contractors offer other air quality services, such as UV light air purification, humidity control, and air quality monitoring.
            Q: Can Diamond Certified hvac contractors work with Carrier products and similar items so I can get cooling system installations in Novato?
            A: Yes, Diamond Certified hvac contractors can work with Carrier products and similar items to provide cooling system installations in Novato.
            Q: What did people search for when they wanted to find the best quality hvac contractors in Novato?
            A: Indoor Air Quality
            Mini Splits
            Hvac Installation
            Heating
            Commercial Air Conditioning

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