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O'Fallon, MO
O'Fallon, MO
Bringing Comfort Home
With Expert AC Services
One Hour Heating & Air Conditioning® of O'Fallon
5
100% Satisfaction Guaranteed
When homeowners want a reliable heating or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort.
At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It’s why we back all of our work with a 100% customer satisfaction guarantee for two years, and it’s why we’re always on time—guaranteed.
We Have a Reputation
For Being Punctual, Friendly and Knowledgable
Diane Leclerc
3 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”
Baxter’s k9 Complex
2 weeks 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!”
Valerie Raddatz
a month ago
“We got an appt right away with theough our warranty company which has never happened before. Joshua arrived on time, very knowledgeable, professional and polite. Had the heat pump back working right away. Highly recommended the company and Joshua.”
Edgar James
2 months ago
“I recently had One Hour Heating and Air Conditioning of O'Fallon install a new HVAC system at my home, and I couldn’t be happier with the experience. From the moment the team arrived, they were professional, courteous, and took the time to explain everything to me. The installation itself went smoothly, and I could tell they really cared about getting it right. They made sure I understood how the system worked and even offered some helpful tips for maintenance. Since the install, my home feels more comfortable than ever, and I can already see the difference in efficiency. I really appreciate their attention to detail and dedication to quality. If you're looking for a reliable HVAC company, I highly recommend One Hour Heating and Air Conditioning of O'Fallon!”
Ian McQuaig
2 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.”
Our customers love what we do because we treat them like the neighbors they are to us. While we carry the One Hour name, we're an independently owned and operated business with a personal investment in the local community. We back our work with a 100% satisfaction guarantee, provide StraightForwardPricing® guides for your benefit, and will pay you back for being even one minute late to an appointment.
Here For You
When You Need Us Most!
'Round the Clock Availability
No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.
100% Satisfaction Guarantee
We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.
StraightForward Pricing® Guide
Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!
Always On Time…Or You Don’t Pay A Dime!®
We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.