Top Rated Hvac Contractors Serving Mill Valley, 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 Mill Valley including 94941 and 94942. These heating and air conditioning experts provide HVAC replacement and HVAC repairs, and they also work on HVAC upgrades, heat pump repair and indoor air quality. 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
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    • 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 offers full HVAC services including maintenance, repairs, water heaters, ductless, full system replacements, and heat pump conversions. Starti...
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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 Mill Valley ZIP Codes

          94941, 94942

          Diamond Certified Hvac Contractors In Mill Valley

          Diamond Certified hvac contractors serving Mill Valley are rated an average of 4.6 out of 5 stars based on 2030 reviews of 77 rated hvac contractors.
          Diamond Certified hvac contractors in Mill Valley Avg. Star Rating.

            Map of Mill Valley, CA

            Mill Valley was founded in 1834, and today, your 14,491 neighbors enjoy lawn bowling, arts and crafts, tennis, kite surfing and cooking classes. Mill Valleyites use Diamond Certified HVAC contractors for mini splits, commercial air conditioning, heating, indoor air quality, HVAC maintenance plans, and more.

            Frequently Asked Questions for Heating & Air Conditioning in Mill Valley, CA
            Q: What are clients of Diamond Certified hvac contractors saying about contractors in Mill Valley, CA?
            A: Verified Burkell Plumbing, Inc. Customer, one of 396
            "They did a good job. Nothing special" -Tami B.
            All Survey Responses for Burkell Plumbing, Inc.
            Verified Enviro Heating & Air Conditioning, Inc. Customer, one of 179
            "I can't think of anything off the top of my head. They did what they said they were going to do." -Chris G.
            All Survey Responses for Enviro Heating & Air Conditioning, Inc.
            Verified Kelly Plumbing & Heating, Inc. Customer, one of 350
            "I think Chris is really responsive and honest. I love those guys. Chris is trustworthy, and I'm comfortable with the various people who work for him being in my home." -Sophie G.
            All Survey Responses for Kelly Plumbing & Heating, Inc.
            Verified Ongaro & Sons Customer, one of 278
            "Courteous and competent They are nearby." -Len A.
            All Survey Responses for Ongaro & Sons
            Q: What are some of the most popular brands that Diamond Certified hvac contractors use when working with Mill Valley residents?
            A: Diamond Certified hvac contractors use top-quality brands like Payne, Maytag, Carrier, Heil and Lennox.
            Q: What types of heat pump repair do hvac contractors offer?
            A: HVAC contractors offer a wide variety of upgrades, including replacement of existing equipment, installation of energy-efficient systems, and additions of thermostats, zoning systems, air purifiers, heat pumps, humidifiers, and air conditioners. They can also help improve air quality by sealing and insulating ducts and adding ventilation systems. Additionally, many contractors offer services for outdoor HVAC systems, such as installing refrigerant lines and air handlers.
            Q: Can Diamond Certified hvac contractors work with Carrier products and similar items so I can get HVAC replacement in Mill Valley?
            A: Yes, Diamond Certified HVAC contractors in Mill Valley can work with Carrier products and similar items to provide HVAC replacement.
            Q: What did people search for when they wanted to find the best quality hvac contractors in Mill Valley?
            A: Heating System Installations
            Furnace Repair
            Cooling System Installations
            Hvac Repairs
            Hvac Installation

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