Our Service Areas

Heating & AC Service in O'Fallon

At One Hour Heating & Air Conditioning® of O'Fallon, we’re proud to be the trusted comfort specialists in O'Fallon and the surrounding areas. Our O'Fallon heating and air conditioning installation, repair, and maintenance services are based on one simple idea: great service is the most important thing to treat customers to. We always adhere to a strict code of ethics that ensure a high level of service. Customers love our friendly technicians, our on-service, and our ability to quickly diagnose and solve all types of HVAC service issues.

Our HVAC services are available in areas such as:

O'Fallon

Saint Peters

Lake St. Louis

Don’t see your area listed above? Call us anyway at (636) 203-7027 to find out if we can come to your home! In addition to offering all types of heating or air conditioning installation and maintenance, our team also provides comprehensive HVAC maintenance plans. Our technicians are ready to make sure your systems are working efficiently and that small problems don’t evolve into costly emergencies.

Call our O'Fallon HVAC service team now at (636) 203-7027 to schedule an appointment. Our team is ready to make staying comfortable simple for you and your family!

The One Hour Heating & Air Conditioning® of O'Fallon Difference

Ever member of our team receives an unmatched level of training. Their experience means that they quickly find problems and find last, cost efficient solutions to them. As a locally owned and operated business, One Hour Heating & Air Conditioning® of O'Fallon provides personal service that’s only possible from a small business. However, as a proud One Hour location, we carry the name of a company that’s respected in the HVAC service industry from coast to coast!

We also have an on-time guarantee that’s one of the most important aspects of our business. We know that customers have more to do than wait for heating and air conditioning service, so we make sure to show up when they expect us to! We’re so dedicated to punctual service that we’ve made our motto “Always On Time … Or You Don’t Pay A Dime!”®. Finally, we back all our work with a guarantee so you can trust that we’re always working to find lasting solutions for heating and air conditioning needs.

Call our air conditioning and heating repair, installation, and maintenance experts now at (636) 203-7027 to schedule an appointment.

HVAC Near Me In...

One Hour Heating & Air Conditioning® of O'Fallon services the following communities:

O'Fallon
Saint Peters
Lake Saint Louis
Defiance
Elsberry
Winfield
Hazelwood
St. Peters
Foristell
Florissant
Old Monroe
Sappington
Wentzville
Moscow Mills
Maryland Heights

We Have a Reputation

For Being Punctual, Friendly and Knowledgable

(49 reviews)

Diane Leclerc

5 months ago

“We have a home warranty. I went online Thursday morning to make a claim. The company set an appt very quickly. The time wasn't going to work due to me working but they were able to fit us into the afternoon. Joshua was very friendly and did a great job fixed the issues and giving us a tune up on our furnace. I highly recommend this company. Thank you for getting us fit in so quickly”

Ian McQuaig

4 months ago

“Joshua was great diagnosing and fixing my furnace when it went out. Near zero temps outside and temps dropping inside quickly. He showed up quick, diagnosed, fixed and explained the problem and potential future issues with my old furnace. I will be using One Hour for my future furnace and air maintenance, and heavily recommend them.”

Michael Mesey

4 months ago

“Had a great experience with One Hour Heating and Air Conditioning of O'Fallon! The technician was friendly, knowledgeable, and took the time to explain everything. Their membership plans are a great deal, offering regular maintenance and priority service. Definitely my go-to for HVAC needs!”

Baxter’s k9 Complex

2 months ago

“I cant say enough great things about One Hour Heating and Air Conditioning! expecially about Josh and John, they were professional, knowledgeable, and ioncredibly courteuos. They took the time to explain everything they were doing, answered all of my questions with patience, and made sure I was completely comfortable with the process. If youre looking for reliable, honest, and top-notch HVAC service, I highly recommend One Hour Heating and Air!”

Special Offers

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$500 OFF

of New Heater Installation

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