A name you can trust
Serving O Fallon, MO & surrounding communities.
We offer a complete suite of HVAC services for your home. Whether you need quality air conditioning or heating service, we’re here for you.
we work hard to earn your lifetime business.
24 hour emergency service available!
Through dedicated customer service, skilled workmanship, and top-quality products, 314-513-0385 is the only number you’ll ever need for complete comfort. We provide precision installation, replacement, seasonal maintenance, and prompt repair of heating, cooling, air quality, and water heating systems, answering every residential and commercial challenge. Our NATE-certified technicians are committed to providing solutions quickly, as well as ensuring sustainable performance and lasting satisfaction.
Why choose us?
Home and business owners in West St. Louis & St. Charles Counties have been turning to Reliable Heating & Cooling, Inc. to improve their everyday life for nearly 50 years.
Featured Services
Call Reliable Heating & Cooling, Inc. for all of your heating & air conditioning needs!
We are always on call
Dedicated HVAC Service Repairs, and Installations throughout West St. Louis & St. Charles Counties
The team from Reliable Heating & Cooling, Inc. is always on call to assist you in times of trouble.
We provide Emergency Service across St Charles, O’Fallon, St Peters, Wentzville & Lake St Louis, MO, 24 hours a day, 7 days a week, 365 days a year, as well as convenient appointment times during regular business hours. No matter what type of challenge you may face or requirements you may have, our specialists arrive equipped to handle the job. From new furnace installations to A/C maintenance and repair, we’re proud to offer a comprehensive suite of residential and commercial HVAC services. We maximize your satisfaction through rapid response, economical solutions, conscientious workmanship, and neat and tidy job sites.
Reliable Heating & Cooling, Inc. is accredited with the Better Business Bureau, and is an Angie’s List Super Service Award Winner.
Established in 1972, we specialize in “green” energy-efficient products, helping our customers achieve their goals for lower operational costs and environmental responsibility. As a Carrier Factory Authorized Dealer, we are uniquely qualified to accommodate your specific requirements and install the most innovative and advanced options on the market. For year-round convenience, comfort, and control over your indoor environment in West St. Louis & St. Charles Counties, contact the professionals from Reliable Heating & Cooling, Inc. today! We are the name you can trust.
