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St. Louis Air Conditioning & Heating Services

Trusted HVAC repairs in St. Louis area

Looking for a recommended Air Purifier? Visit our Air Quality service page or click this link below to check out the PremierOne Air Purifier.

Learn More About PremierOne

Throughout the years, our St. Louis heating and AC professionals have developed strong relationships with customers because we care about your comfort. At One Hour Heating & Air Conditioning® of St. Louis, we’re always ready to help you with your heating and cooling issues, no matter how big or small. Whether you need help repairing your air conditioner, improving the air quality in your home, installing a new heater, there’s nothing our team can’t handle.

We don’t simply make promises—we back up our work with a 100% satisfaction guarantee. Our UWIN Guarantee means we stand behind our parts, labor, and craftsmanship for two years past your service date! Our promise ensures all our solutions are designed to be long-term. We provide HVAC repair and installation services to residents in St. Louis, University City, Creve Coeur, Chesterfield, O'Fallon, Maryland Heights. and nearby communities in Missouri.

Heating & Cooling Repair, Replacement & Installations in St. Louis

Our HVAC service technicians are highly skilled, experienced, and knowledgeable in all things related to air conditioning and heating. They are background checked and drug-tested for your peace of mind. With our St. Louis heating and AC teams on your side, you can rest assured that we are reliable technicians that will deliver excellent quality services. Our priority is to ensure that you regain the comfort in your home. Reach out to our St. Louis HVAC repair team today so that we can inspect your air conditioning and heating problems!

Always On Time... Or You Don't
Pay A Dime

We Have A Reputation For Being Punctual, Friendly, and Knowledgeable

    “would recommend them 100%”

    - Wes V.

    “Very Satisfied”

    - Lynn F.

    “Great experience.”

    - Stephanie D.

    “Brett and his team did a fabulous job installing”

    - Craig S.


    - Art W.
  • Areas We Serve
    • Ballwin
    • Chesterfield
    • Cottleville
    • Eureka
    • Fenton
    • Glencoe
    • Grover
    • High Ridge
    • Lake Saint Louis
    • O Fallon
    • Saint Charles
    • Saint Louis
    • Saint Peters
    • Valley Park
  • Zip Codes We Serve
We may service additional communities. Please contact us for more information.
  • U-Win Satisfaction Guaranteed
  • North American Technician Excellence

Here for You Around the Clock

Our Comfort Specialists are available to help, no matter the time of day. If you're in need of emergency services, we've got you covered 24/7.

Part of the Authority Brands Family