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St. Louis Air Conditioning & Heating Services

Trusted HVAC repairs in St. Louis area

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.

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

Our HVAC 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 team 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

    “I called about a problem with heater in a home I had just purchased, and it turned out that "One Hour" was the company that had installed it just one year prior. They came out to take care of the ...”

    “The installation team was professional and speedy. The appreciation shown to me for being a customer afterward was awesome!”

    “My technicians were friendly and on-time. They didn't try for a hard sell — they just gave me helpful advice.”

    “Their prompt and courteous services are something a lot of tradesmen have forgotten over the years.”

    “No need to wait a week — just call One Hour. When I scheduled, the technicians came the very next morning, on time!”

    “I have had them for 10 plus years, and I can't say enough good things about these people.”

  • Areas We Serve
    • Ballwin
    • Eureka
    • Glencoe
    • Grover
    • High Ridge
    • Saint Louis
    • Valley Park
  • Zip Codes We Serve
    • 63011,  
    • 63021,  
    • 63022,  
    • 63024,  
    • 63025,  
    • 63038,  
    • 63040,  
    • 63049,  
    • 63088,  
    • 63119,  
    • 63122,  
    • 63123,  
    • 63125,  
    • 63131
  • 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