Hours: We are open 24/7

2183 West Terra Lane, O'fallon, MO 63366

(314) 513-0385

How can we help?

For any concerns with your heating equipment, contact the skilled professionals from Reliable Heating and Cooling.  While there’s a long list of contractors offering heating repair in O Fallon, MO & surrounding communities, the majority lack the proper training, knowledge, and state-of-the-art diagnostic tools to provide accurate and reliable help.  When you put your trust in Reliable Heating and Cooling, your call is always answered by a fully licensed, insured, and NATE-certified technician who draws from years of in-field experience.  Every member of our team has consistently demonstrated in-depth product knowledge, courteous customer service, and rewarding solutions to even the toughest challenges.  Consider Reliable Heating and Cooling as your problem solver, and we handle every manner of heating-related difficulty.

Professional Heating Repair Throughout O Fallon, MO & surrounding communities

Reliable Heating and Cooling services all manufacturers, models, and styles of heating equipment, from old to new, ensuring safe, reliable, and efficient performance.  Our factory trained technicians quickly get to the bottom of the problem, offer cost-effective recommendations, and proceed with your consent.  As a Carrier Factory Authorized Dealer, our team is regularly updated in evolving techniques and technology, and are proficient in repair, maintenance, and installation.  Whether you’re confronted with a minor service requirement or the unexpected need to replace your heating system, we provide the help you need and prioritize your best interests. We get you back to ideal comfort without unnecessary or frustrating delays.

For heating repairs any time of the day, turn to the Reliable Heating and Cooling team!

Breakdowns rarely happen at convenient times.  Rest assured, Reliable Heating and Cooling is always here to provide prompt and expert assistance, around the clock and around the calendar, so you’re never left out in the cold.  And you can depend on our repairs to meet the demands of the coldest night of the year, and the longest winter on record.  Our conscientious technicians optimize your system, verifying safety, efficiency, sound levels, and reliability, to deliver satisfying return from your investment.  Know that Reliable Heating and Cooling delivers exceptional service across O Fallon, Saint Peters, Lake Saint Louis, Wentzville, and Saint Charles, MO, providing our customers a name they can always trust.

Furnace Repair Near Me O Fallon, MO | Heater Repair Saint Peters, MO | Heating System Repair Lake Saint Louis, MO

At Reliable Heating and Cooling We Offer a Variety of HVAC Services:
Heating Installation
Heating Service
Air Conditioning Service
Air Conditioning Repair
Air Conditioning Installation

Heating Repair, Furnace Repair, Heater Repair & HVAC Repair O Fallon, MO, Saint Peters, MO, Lake Saint Louis, MO, Wentzville, MO & Saint Charles, MO

Heating Repair Near Me O Fallon, MO | Heating Repair Saint Peters, MO | Heating System Repair Lake Saint Louis, MO

Furnace Repair Near MeHeating Repair Near MeHeating System Repair ∴ Saint Peters, MO ∴ Saint Charles, MO ∴ O Fallon, MO

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Customer Reviews
What our customers are saying

I had a system malfunction on Sunday evening December 12, 2022 on my Carrier Infinity ICS purchased in 2008.I am a first time caller to Reliable. Marty called me back and had his Tech dispatched at 8 AM the next day. The unit had failed and was dangerous to use. He had a new system by the next morning. They installed it and I was completely satisfied with their service and response time. I overwhelmingly recommend Reliable and will be using them from now on.


Reliable has installed and maintained our last 2 furnaces and AC. Our experience with them has been great. Just yesterday we had an issue with our AC. I talked to Marty and he said he’d have someone out the next day. They even were able to accommodate us with an afternoon call. Derrick arrived promptly on time and had us up and going again in 15 minutes (bad capacitor on the condenser unit fan motor). With the prediction of high 90 temps, we were so thankful to have AC working again.

Keith Scherer

We have used Reliable Heating and cooling for all of our heating and cooling needs. We needed some water heater work and Ralph came out and took care of it right away. Ralph was very professional and knowledgeable. He got the job done very quickly and everything is working great! I always recommend Reliable to family and friends. They truly are Reliable!

Chris Lopez

Had a small gas leak for a property I was helping a friend sell and we found out late last night. We reached out to Reliable H&C and Derrick was over first thing in the morning. He was friendly, professional and knowledgeable. He answered my questions with a smile. Derrick was a rock star. Will absolutely call him again. Bravo

Connor Kapp

Have been with them for more than 10 years. They provide exceptional service…from the time they call to remind you about setting an appointment to the actual service day. Derek (and all their other technicians) are knowledgeable, professional, prompt, and open to listening to questions and pay attention to details. Never had a problem with anything. Thank you for a job well done. Good pricing.

Seema Chouhan

We had a emergency water leak problem with our AC unit in the basement of our recently purchased condo. Called Reliable and Derrick was there within a couple of hours. He was polite, knowledgeable, and friendly. Derrick quickly found the problem and repaired it. He also checked the system overall, pointed our some concerns and answered all my questions. I can’t say enough about how satisfied we were with Derrick and Reliable Heating & Cooling! We would definitely recommend them!!! Thanks again!!!!

Terry Mills

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