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Reliable Heating & Cooling Inc.

HVAC Companies in O'Fallon, Missouri
Ranked #8 in O'Fallon | Grade B-
4.80 (116 reviews)

Reliable Heating & Cooling Inc.

Local HVAC contractor providing repair, installation, and maintenance with an emphasis on clear communication and respectful in-home work practices Serving homeowners across O'Fallon, Missouri.

Reliable Heating & Cooling Inc. business photo 1 - HVAC in O'Fallon
Reliable Heating & Cooling Inc. business photo 2 - HVAC in O'Fallon
Reliable Heating & Cooling Inc. business photo 3 - HVAC in O'Fallon
Reliable Heating & Cooling Inc. business photo 4 - HVAC in O'Fallon
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Why Homeowners Choose This Business

Clear scheduling windows, respectful in-home practices, and technicians who explain options and maintenance tips. Steady service for repeat customers across many years Local experience that helps homeowners across O'Fallon, Missouri compare a more region-aware provider.

Service Area

Headquartered at 2813 W Terra Ln, O'Fallon, Missouri 63366, serving O'Fallon and nearby St. Charles County communities.

Featured Local Business

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Listing details

This listing includes service information, customer review signals, a photo gallery, and public contact details to help homeowners compare this business more easily.

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  • 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.
  • Shows strong customer satisfaction signals based on review quality and volume.

Trust Signals

Emergency Service - Open 24/7 for HVAC emergencies.

Services Covered

  Renovation Services
  Furnace Repair
  Maintenance
  AC Repair
  Installations
  HVAC installation
  Repairs
  Hvac Maintenance
  Heat Pump Service
  Thermostat Replacement
  Ductwork Repair
  Indoor Air Quality
  Emergency HVAC service
  gas line for HVAC

Heating and AC repair, system replacement and installation, seasonal maintenance, and support for gas line connections associated with HVAC equipment.

Reviews

Customer Reviews

Dennis
If you’re looking for a great and I mean great HVAC and Heating company you can’t go wrong with Reliable. I have been with them for over 12 years. They have replaced both my air conditioner and heating units quickly and efficiently. I won’t…
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If you’re looking for a great and I mean great HVAC and Heating company you can’t go wrong with Reliable. I have been with them for over 12 years. They have replaced both my air conditioner and heating units quickly and efficiently.
I won’t go to any other similar business. Reliable is always there when you need them 24 - 7 and if you have an issue, they listen and make it right. Management, Staff and Technicians are top notch. “Well Done Reliable”
Kevin Jones
Derrick came out to inspect my furnace and I had a great experience. He was friendly and knowledgeable and helped educate me on items that can help prolong the life of my furnace. I will continue using this company for my service.
Daniel Rieman
I received a call from Liana asking when I would be available for a gas line install for the generator. She gave me a few options and clearly explained what would be done. The arrival window was small which isn't typical and I really liked…
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I received a call from Liana asking when I would be available for a gas line install for the generator. She gave me a few options and clearly explained what would be done. The arrival window was small which isn't typical and I really liked that On the morning of the install it started with a quiet knock on the door. Brad arrived in the time window given and that knock alerted me but didn't wake anyone sleeping up. He introduced himself and gave an overview of what he was going to be doing. Very professional and personable. The work looks very good.
Thank you
Serena Rowan
I have been a customer of Reliable Heating and Cooling for 20+ years. This installation HAVC is my second one. Reliable Heating and Cooling served me at my former home and now my villa. The installers were great! I was concerned about my…
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I have been a customer of Reliable Heating and Cooling for 20+ years. This installation HAVC is my second one. Reliable Heating and Cooling served me at my former home and now my villa. The installers were great! I was concerned about my carpet getting soil due to the traffic. They put covering though out where they were working. I thank you Reliable Heating and Cooling for another job well done. Give my thanks to the three young men who were wonderful and you to Marty for the pre-planning we experienced prior to installation. May God continue to bless you and your business. Again, thank you for a job well done...
R Cotton
I have use Reliable Heating & Cooling for over 30 years. The service has always been excellent. Marty has always made sure that things were professionally done. Thanks to Marty and staff for the great service. Also thanks Derrick for su…
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I have use Reliable Heating & Cooling for over 30 years. The service has always been excellent. Marty has always made sure that things were professionally done. Thanks to Marty and staff for the great service. Also thanks Derrick for such an awesome job! Derrick is always courteous, professional and knowledgeable.

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Special Offers

Emergency Service

Emergency service may be available for urgent issues.

Frequently Asked Questions

They handle heating and air conditioning repairs, replacements, and seasonal tune-ups. Work includes furnaces, air conditioners, and related comfort components.

Yes. The business lists 24-hour availability each day of the week. Customers also mention after-hours support in their reviews.

Reviews note that the office provides clear options and small arrival windows. Actual availability varies by demand and location, so calling or using the website is recommended.

You can request a visit to assess your home and discuss system options. Quotes are typically provided after an in-home evaluation.

Technicians service a wide range of common residential HVAC brands. Specific models and brand support can be confirmed during scheduling.
 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
4.80 (116 reviews) Featured BusinessPro Listing
Address
2813 W Terra Ln, O'Fallon, MO 63366
Business Type
HVAC Contractor
Website
https://www.trustreliable.com/
City Page
HVAC Companies in O'Fallon, Missouri

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