One Hour Heating & Air Conditioning of O'Fallon
One Hour Heating & Air Conditioning of O'Fallon is a HVAC provider serving Ofallon, MO. Rated 5.0★ with 49 Google reviews. See services, review signals, and request a quote.
HVACOfallon, MO
On this page
Company overview
- TradeHVAC
- Service areaOfallon, MO
- Google rating5.0★ (49 reviews)
- Phone(636) 614-0999
- Address113 Triad Center W, O'Fallon, MO 63366, USA
Photos
Photos from One Hour Heating & Air Conditioning
What customers say
“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 aft…”
“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 rig…”
“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 profes…”
“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 potent…”
“Joshua was great! Very thorough and fixed the problem. We have a home warranty and he was very helpful in working with the warranty company and resolved our issue. Five stars to him!”
Key highlights
Strengths
- Highly rated (5.0★ average)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does One Hour Heating & Air Conditioning of O'Fallon offer?
One Hour Heating & Air Conditioning of O'Fallon provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Ofallon, MO.
What is One Hour Heating & Air Conditioning of O'Fallon's rating?
One Hour Heating & Air Conditioning of O'Fallon has a 5.0 out of 5 star rating based on 49 Google reviews.
Is this company licensed in Missouri?
All listed providers have a verified Missouri contractor license at time of publication. You can verify on the Municipal licensing — no statewide Missouri HVAC license (each city regulates mechanical trades independently) lookup at https://ago.mo.gov/divisions/consumer/.
Does One Hour Heating & Air Conditioning of O'Fallon offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: Municipal licensing — no statewide Missouri HVAC license (each city regulates mechanical trades independently) · Company data: verified business records + Google Business profile
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