Top Rated Hvac Contractors Serving Los Altos, 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 Los Altos including 94024, 94022 and 94023. These heating and air conditioning experts provide air conditioning and cooling system installations, and they also work on indoor air quality, furnace repair and HVAC repairs. 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 Sep 30, 2025
  • 148,521 people sourced companies in Heating & Air Conditioning
    16,331 Verified Heating & Air Conditioning Customers Surveyed
16331
148521
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Air Quality Heating & Air Conditioning

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Air Quality Heating & Air Conditioning installs, repairs, and maintains high-efficiency HVAC systems for residential and light commercial clients in S...
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Main Services

Heating & Air Conditioning
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Additional Services

Installation of Furnaces & Air Conditioners, Repairs on All Makes & Models, Allergen Filters, Maintenance Agreements, New Construction & Remodeling

Coverage Areas

Santa Clara County, San Mateo County

Residential Only
Residential Only
Mobile Services Available
Mobile Services Available
Free Estimates
Free Estimates
Appointments Available
Appointments Available
Diamond Certified Video Profile
Heating & Air Conditioning - Air Quality Heating & Air Conditioning - Santa Clara County
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Diamond Certified Company Report
Matthew Farber, Owner-Air Quality Heating & Air Conditioning
Matthew Farber, Owner
Expert Contributions
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  • 658
  • Rating Surveys
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  • 19
  • Photos
    & Videos
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  • 5
  • Researched Articles
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    Hours CLOSED NOW
    License:
    769446
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    Bayhill Heat & Air, Inc.

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    Bayhill Heat & Air, Inc. is an HVAC (heating, ventilating and air conditioning) contractor that serves homeowners in San Mateo, Santa Clara, Alameda a...
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    Main Services

    Heating & Air Conditioning
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    Additional Services

    Same-Day Service, Equipment Retrofit & Replacement, Installation & Replacement, Duct Installation & Replacement, Relocation, Free In-Home Estimates, Residential, Light Commercial

    Brands

    Carrier

    Coverage Areas

    San Mateo County, Santa Clara County, Alameda County, Part of San Francisco

    Established in 1981
    Established in 1981
    Residential & Commercial
    Residential & Commercial
    Same-Day Service
    Same-Day Service
    Free Estimates
    Free Estimates
    Diamond Certified Video Profile
    Heating & Air Conditioning - Bayhill Heat & Air, Inc. - San Mateo County
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    Ricardo Valderrama, Owner-Bayhill Heat & Air, Inc.
    Ricardo Valderrama, Owner
    Expert Contributions
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    • 286
    • Rating Surveys
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    • 19
    • Photos
      & Videos
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    • 5
    • Researched Articles
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      Hours CLOSED NOW
      License:
      917996
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      San Jose Heating & Cooling

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      San Jose Heating & Cooling installs and removes insulation, repairs and installs HVAC systems, cleans attics and crawl spaces, and provides other serv...
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      Main Services

      Insulation
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      Heating & Air Conditioning

      Additional Services

      Insulation Removal & Installation, HVAC Installation & Repair, Air Duct Repair & Replacement, Attic & Crawl Space Cleaning, Radiant Barriers

      Brands

      Carrier

      Coverage Areas

      Bay Area

      Established in 2018
      Established in 2018
      Residential Only
      Residential Only
      Free Estimates
      Free Estimates
      Coupon on Website
      Coupon on Website
      Diamond Certified Video Profile
      Insulation - San Jose Heating & Cooling - Bay Area
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      Armando Garcia, Owner-San Jose Heating & Cooling
      Armando Garcia, Owner
      Expert Contributions
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      • 17
      • Rating Surveys
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      • 19
      • Photos
        & Videos
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      • 5
      • Researched Articles
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        Hours CLOSED NOW
        License:
        1060833
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        Air Care Heating & Cooling, Inc.

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        Air Care Heating & Cooling, Inc. provides a variety of services that are designed to improve indoor air quality for residential and commercial clients...
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        Main Services

        Heating & Air Conditioning
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        Additional Services

        HVAC Maintenance, Installation & Repair, Duct Inspections, Indoor Air Quality

        Brands

        Bryant, Mitsubishi

        Coverage Areas

        Santa Clara County, Milpitas, San Jose, Sunnyvale, Santa Clara, Mountain View, Palo Alto, Cupertino, Los Altos, Gilroy

        Family Owned
        Family Owned
        Established in 2014
        Established in 2014
        Residential & Commercial
        Residential & Commercial
        Appointments Available
        Appointments Available
        Diamond Certified Video Profile
        Heating & Air Conditioning - Air Care Heating & Cooling, Inc. - Santa Clara County
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        Joey Mangano, Owner-Air Care Heating & Cooling, Inc.
        Joey Mangano, Owner
        Expert Contributions
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        • 109
        • Rating Surveys
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        • 19
        • Photos
          & Videos
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        • 5
        • Researched Articles
          • Quick Connect
          Hours CLOSED NOW
          License:
          984584
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          Air Sharks LLC

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          Air Sharks LLC provides a wide range of HVAC services for residential clients throughout the South Bay. In addition to installing, repairing, and main...
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          Main Services

          Heating & Air Conditioning
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          Additional Services

          HVAC Installation, Maintenance & Repair, Heat Pumps, Ductwork Cleaning, Water Heater Maintenance, Repair & Replacement

          Brands

          Daikin, Goodman, Lennox

          Coverage Areas

          South Bay

          Diamond Certified Video Profile
          Heating & Air Conditioning - Air Sharks LLC - South Bay
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          Khaled Alsaka, Owner-Air Sharks LLC
          Khaled Alsaka, Owner
          Expert Contributions
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          • 88
          • Rating Surveys
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          • 8
          • Photos
            & Videos
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          • 5
          • Researched Articles
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            Hours CLOSED NOW
            License:
            1100692
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            Valley Heating, Cooling, Electrical and Solar

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            Valley Heating, Cooling, Electrical and Solar installs and services all brands of air conditioners, heat pumps, furnaces, fan coils, filtration system...
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            Main Services

            Heating & Air Conditioning
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            Additional Services

            Air Conditioning, Heating and ElectricalSolar System Installations, Electrification, Heat Pumps, Water Heaters, Solar System Installations, Duct Cleaning, Testing and Sealing, Dryer Vent Cleaning, Zoning Systems, Filtration, Fireplace Inserts, Residential and Light Commercial

            Brands

            Lennox, Mitsubishi, American Standard, Bryant, Carrier, Trane

            Coverage Areas

            Santa Clara County, San Mateo County, Parts of Santa Cruz County, Parts of Alameda County

            Family Owned
            Family Owned
            Established in 1962
            Established in 1962
            Special Discount
            Special Discount
            Residential & Commercial
            Residential & Commercial
            Diamond Certified Video Profile
            Heating & Air Conditioning - Valley Heating, Cooling, Electrical and Solar - Santa Clara County
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            Diamond Certified Company Report
            Cindy Faulkner, Owner-Valley Heating, Cooling, Electrical and Solar
            Cindy Faulkner, Owner
            Expert Contributions
            ratings icon
            • 455
            • Rating Surveys
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            • 9
            • Photos
              & Videos
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            • 5
            • Researched Articles
              • Quick Connect
              Hours CLOSED NOW
              License:
              258540
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              Service Champions

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              Service Champions is a premier provider of home services in Northern California. The company's expertise includes heating, cooling, plumbing, electric...
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              Main Services

              Air Duct Cleaning
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              Heating & Air Conditioning
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              Air Quality - Indoor
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              Insulation
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              Additional Services

              Furnaces and Air Conditioners, Ductwork and Insulation, Electrical, Plumbing, Water Filtration, Air Filtration

              Coverage Areas

              East Bay, South Bay, Sacramento Areas

              Residential Only
              Residential Only
              Weekend Hours
              Weekend Hours
              Free Estimates
              Free Estimates
              Live Phone Call Answers
              Live Phone Call Answers
              Diamond Certified Video Profile
              Air Duct Cleaning - Service Champions - East Bay
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              Diamond Certified Company Report
              Kevin Comerford, Founder-Service Champions
              Kevin Comerford, Founder
              Expert Contributions
              ratings icon
              • 7174
              • Rating Surveys
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              • 33
              • Photos
                & Videos
              articles icon
              • 5
              • Researched Articles
                • Quick Connect
                Hours CLOSED NOW
                License:
                817040
                Learn how to choose a Heating & Air Conditioning and more…

                Diamond Certified Hvac Contractors Serve These Los Altos ZIP Codes

                94024, 94022, 94023

                Diamond Certified Hvac Contractors In Los Altos

                Diamond Certified hvac contractors serving Los Altos are rated an average of 4.5 out of 5 stars based on 6352 reviews of 79 rated hvac contractors.
                Diamond Certified hvac contractors in Los Altos Avg. Star Rating.

                  Map of Los Altos, CA

                  Los Altos was founded in 1896, and today, your 28,976 neighbors enjoy sightseeing, sailing, board games, foraging and reading. Los Altans use Diamond Certified HVAC contractors for ductless heating and cooling systems, heat pump repair, HVAC repairs, mini splits, energy-efficient HVAC work, and more.

                  Frequently Asked Questions for Heating & Air Conditioning in Los Altos, CA
                  Q: What are clients of Diamond Certified hvac contractors saying about contractors in Los Altos, CA?
                  A: Verified Air Care Heating & Cooling, Inc. Customer, one of 84
                  "They put a new heater in last year and it is working fine. They did call back once or twice to follow up and make sure everything was okay." -Denise D.
                  All Survey Responses for Air Care Heating & Cooling, Inc.
                  Verified Service Champions Customer, one of 2575
                  "I would say, they were good and if someone asked for a reference, I would refer them. They did the job and were efficient. They got done within a day, left the area clean and the furnace working well." -Vidyut G.
                  All Survey Responses for Service Champions
                  Verified Valley Heating, Cooling, Electrical and Solar Customer, one of 405
                  "I would recommend them. I don't know." -Peter S.
                  All Survey Responses for Valley Heating, Cooling, Electrical and Solar
                  Verified Certified Heating and Air Conditioning Customer, one of 213
                  "I use them for my personal use, as well as my clients' properties while they're buying a home. I've never had an issue with them. They're responsive and professional, which are the 2 top qualification factors I absolutely need in a company that I do any kind of business with. They call me back right away, usually within the same business day." -Jackie P.
                  All Survey Responses for Certified Heating and Air Conditioning
                  Verified Air Quality Heating & Air Conditioning, Inc. Customer, one of 608
                  "In general, good service They were prompt, on time and fast." -Brian B.
                  All Survey Responses for Air Quality Heating & Air Conditioning, Inc.
                  Verified Bayhill Heat & Air, Inc. Customer, one of 283
                  "Have questions ready and do some background research. Timely, polite and professional" -Daniel R.
                  All Survey Responses for Bayhill Heat & Air, Inc.
                  Q: What are some of the most popular brands that Diamond Certified hvac contractors use when working with Los Altos residents?
                  A: Diamond Certified hvac contractors use top-quality brands like Maytag, Armstrong Air, Sanyo, York and Panasonic.
                  Q: What types of HVAC installation do hvac contractors offer?
                  A: HVAC contractors can provide a variety of services to improve indoor air quality. These services can include installing air filters and purifiers, as well as monitoring and adjusting the air conditioning system to ensure proper ventilation. HVAC contractors can also inspect air ducts and clean them if necessary, as well as install humidifiers to help regulate the humidity in the home. These services can help to reduce allergens, dust, and other airborne pollutants, and can help to improve the overall air quality in the home.
                  Q: Can Diamond Certified hvac contractors work with Carrier products and similar items so I can get air conditioning in Los Altos?
                  A: Yes, Diamond Certified HVAC contractors can work with Carrier products and similar items to provide air conditioning services in Los Altos.
                  Q: What did people search for when they wanted to find the best quality hvac contractors in Los Altos?
                  A: Ductless Heating And Cooling Systems
                  Hvac Installation
                  Air Filtration
                  Air Conditioning
                  Cooling System Installations

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