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One Hour Heating & Air Conditioning of O'Fallon

HVAC Companies in O'Fallon, Missouri
Ranked #4 in O'Fallon | Grade B+
5.00 (48 reviews)

One Hour Heating & Air Conditioning of O'Fallon

Heating and air conditioning service for repairs, maintenance, and replacements with an emphasis on clear communication and timely appointments Serving homeowners across O'Fallon, Missouri.

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Why Homeowners Choose This Business

Appointments are arranged quickly, and technicians arrive on time and walk customers through the work. Many reviews highlight clear explanations, coordination with home warranty providers, and efficient fixes Local experience that helps homeowners across O'Fallon, Missouri compare a more region-aware provider.

Service Area

Based in O'Fallon, Missouri and serving surrounding neighborhoods in St. Charles County.

Local Pro Business

This listing includes additional business details, homeowner trust signals, and stronger comparison information.

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Listing details

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This profile includes more business details, homeowner trust signals, and a fuller public presentation.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Maintains a competitive standing in this market.
  • Performs at or above the local average rating.
  • Shows strong customer satisfaction signals based on review quality and volume.

Trust Signals

Emergency Service - Open 24 hours daily per posted hours.

Services Covered

  Renovation Services
  Furnace Repair
  Installations
  AC Repair
  Heat Pump Service
  Hvac Maintenance
  HVAC installation
  Heating Repair
  Air conditioner replacement
  Thermostat troubleshooting
  Ductwork service
  Emergency HVAC Availability

Heating and cooling repair, furnace and heat pump service, AC repair, HVAC system replacement, installation, and seasonal maintenance.

Reviews

Customer Reviews

Valerie Raddatz
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…
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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.
Ian McQuaig
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…
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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.
Edgar James
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…
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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!
Diane Leclerc
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…
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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
Julie Thornton
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!

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Frequently Asked Questions

They handle heating and cooling repairs, maintenance, and full system replacements. Reviewers mention work on furnaces, heat pumps, and complete HVAC installations.

Reviews frequently note that appointments were set up quickly, sometimes the same or next day. Arrival times are communicated and technicians show up on schedule.

Several reviewers report that the team coordinated directly with their home warranty provider. This included scheduling, diagnostics, and completing approved repairs.

Technicians explain their findings, discuss repair options, and answer questions about potential future issues. Customers often mention courteous service and clear communication throughout the visit.

Yes, reviewers describe complete system installations that were done smoothly and professionally. Crews provide basic system orientation and operating tips after the job.
 Verified Listing

Opening Hours

  • Monday Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours

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Business Details

Business Rating
5.00 (48 reviews) Pro Listing
Address
113 Triad Center W, O'Fallon, MO 63366
Business Type
HVAC Contractor
Website
https://www.onehourheatandair.com/ofallon/
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HVAC Companies in O'Fallon, Missouri

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