Quality Service When You Need It We're Not Comfortable
Until You Are
That's A Promise.

Comprehensive Heating & Cooling Services

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  • Customer Care Dealer

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 by calling (618) 649-0056.

We guarantee your 100% satisfaction.

We are proud to be an American Standard Customer Care Dealer.  Our customers are never disappointed with our outstanding service. 

Go With The Best

SUPERIOR WORKMANSHIP, SUPERIOR SERVICE
  • 100% Customer Satisfaction Guaranteed
  • Free Estimates on New Equipment
  • EPA Certified Technicians
  • 0% Interest Financing For 60 Months
  • After Hours Service Available
  • Military/Veteran, & Senior Discounts

What We Can Do For You

Exceptional Repair, Installation & Maintenance Services

It doesn’t matter what time of day you need us - our services are available to you 24/7. We can service and maintain 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.

Our company is an expert in maintenance services, offering the help you need to keep your heater or air conditioner running smoothly year-round. Maintenance services can also help find and fix problems, preventing potentially costly repairs down the line. With regular maintenance from Heritage Heating & Cooling, you can rest easier knowing that you will always be comfortable in your home.

Rave Reviews

Our Customers Love Us
  • A quality product installed and maintained by quality people!

    “Heritage installed a high efficiency American Standard heating/cooling replacement unit about 18 months ago. They did an excellent job. They have performed a Fall/Winter and a Spring/Summer inspection ...”

    - Andrew Allan
  • Awesome

    “Awesome service and professionalism. Best response I've ever been privileged to experience. From the quick call back to the quick response and the superior service provided by the techs, it's ...”

    - Charles T
  • No One Else Even Comes Close

    “I highly recommend Heritage Heating & Cooling. We called them on Wednesday night at 8:30 and by Friday morning at 11:30 they were done installing a brand new American Standard, 5-ton, 16 SEER, two ...”

    - Terry Holley
  • Customer focused, professional - not about the $.

    “Heritage installed an HVAC 18 months ago. Very professional and answered all my questions. I recently had another company service (because I had an existing agreement) and they stated all kind of ...”

    - Ed
  • $150 annual maintenance agreement

    “Very courteous and professional.”

    - A/C tune up
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Contact Us Now

Request Your Appointment Here or Call 618-649-0056
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