Veteran Owned. Family Operated.

O’Fallon Air Conditioning & Heating Services

Quality Commercial & Residential HVAC Services

Have an HVAC issue? Don’t try to fix it yourself! Seek the help of a licensed, bonded, and insured technician! When unwanted problems occur at your home or business space, our O’Fallon air conditioning and heating company has the knowledge and expertise needed to put a stop to your HVAC headaches. Leave it to Heritage Heating & Cooling!

We’re a veteran owned and operated company backed by several years of experience in the industry. Our founder—a veteran himself—has mastered every aspect of the trade as a seasoned HVAC professional, from large commercial duct projects to design builds and residential installations. He passes his expert-level knowledge onto our background checked, drug tested, and EPA certified technicians.

Have a heating or cooling issue that needs to be fixed? Schedule an appointment with us today: (618) 649-0056

Your Full-Service HVAC Professionals

Your American Standard Customer Care Dealer

Customers are never disappointed with our outstanding service.

100% Customer Satisfaction 618.649.0056

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Superior Workmanship, Superior Service

  • Military/Veteran, & Senior Discounts

  • After Hours Service Available

  • 0% Interest Financing For 60 Months

  • EPA Certified Technicians

  • Free Estimates on New Equipment

What We Can Do For You

Available Around-the-Clock

It doesn’t matter what time of day you need us. Our services are available to you 24/7. We can service any and all brands of HVAC equipment, and the tools we use for installations and service diagnostics are the best of the best. In this rapidly changing industry, we make sure to stay up-to-date on the latest technologies and practices in order to deliver the best quality heating and AC services in O’Fallon.

All of our customers find extreme satisfaction in our services. With 100+ 5-star reviews, 3 Angie’s List Super Service Awards, and an A+ BBB rating under our belts, our stellar customer satisfaction levels speak for themselves. We also offer discounts for veterans, active-duty personnel, and senior citizens!

Call now to get HVAC service today!

Available 24/7 618.649.0056

Heritage Heating & Cooling

97 Betty Ln. O'Fallon, IL 62269
Phone: (618) 649-0056
Hours: Available 24/7
Emergency service available
after 4:30pm
Service Area: Proudly Serving O'Fallon and The Surrounding Communities

Brands & Awards

What Customers Are Saying

  • A quality product installed and maintained by quality people! Andrew Allan|O'Fallon, IL

  • Awesome Charles T|Shiloh, IL

  • No One Else Even Comes Close Terry Holley|O'Fallon, IL

  • Customer focused, professional - not about the $. Ed|Fairview Heights, VA

  • $150 annual maintenance agreement A/C tune up|O'Fallon, IL

  • I've used the twice already and would recommend to everyone. Steve|Millstadt, IL

  • Fantastic Service - Highly Recommend! Andy and Debbie Kaiser|O'Fallon, IL

  • Intergrity AuBuchon|O Fallon, IL

  • Awesome team work PJ|Fairview Heights, IL