Reliable Heating & Cooling Inc.
Reliable Heating & Cooling Inc. is a HVAC provider serving O Fallon, IL. Rated 4.8★ with 113 Google reviews. See services, review signals, and request a quote.
HVACO Fallon, IL
On this page
Company overview
- TradeHVAC
- Service areaO Fallon, IL
- Google rating4.8★ (113 reviews)
- Phone(314) 207-6489
- Address2813 W Terra Ln, O'Fallon, MO 63366, USA
Photos
Photos from Reliable Inc., Serena Rowan
What customers say
“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 heatin…”
“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 installe…”
“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…”
“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 usin…”
“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 gr…”
Key highlights
Strengths
- Highly rated (4.8★ average)
- Large review volume (113 reviews)
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 Reliable Heating & Cooling Inc. offer?
Reliable Heating & Cooling Inc. provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in O Fallon, IL.
What is Reliable Heating & Cooling Inc.'s rating?
Reliable Heating & Cooling Inc. has a 4.8 out of 5 star rating based on 113 Google reviews.
Is this company licensed in Illinois?
All listed providers have a verified Illinois contractor license at time of publication. You can verify on the Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) lookup at https://online-dfpr.micropact.com/Lookup/LicenseLookup.aspx.
Does Reliable Heating & Cooling Inc. 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 2026-04-22. Reviews refreshed 2026-04-22.
Licensing data: Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) · Company data: verified business records + Google Business profile
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