Jerry Kelly Heating & Air Conditioning —Your #1 HVAC Company In St. Charles County & West County!

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We Respond Quickly & Fix it Right The 1st Time!

8 Days A Week! 8AM - 8PM No Extra Charge for Weekend Service! Emergency Service Available

Call 636.757.8506 Financing Options Free Replacement Estimates Keeping You Comfortable Learn More

It's More Than A Mission It’s The Jerry Kelly Way

Delivering over the top to our customers
It’s awesome to receive the service you expect, and it’s even better to receive more!
Exceptional Customer Service From Beginning to End
No matter what the scope of work you need done, you can look forward to every interaction with our team.
Dedication to Workmanship — Constant Training
As technology keeps evolving and we find new ways to meet the needs of our customers, our team stays up to date.

Not Just Heating & Cooling Your Comfort Guaranteed

100% Certified

All of our technicians are NATE certified — Every single one! And there’s really no reason to settle for less!

$90,000+ End Alzheimer’s

$1 donation to end Alzheimer’s for every service call! We’re committed to the cause and put all money towards the Alzheimer’s Association.

50,000+ Customers

Even though we’ve served thousands upon thousands in our service area, you’ll feel like our only one.

45+ Years And Counting

We have a long history in the area, and we’re proud to say that we’ve grown to be a household name.

Serving the Community & Beyond Our purple vans are more than just a standard of service.

As the sixth leading cause of death in the United States, Alzheimer’s affects over five million people and their families. We honor everyone affected with our purple fleet in addition to our continuous donations towards the Alzheimer’s Association.

Alzheimer’s Support

Those who wear the Jerry Kelly uniform Are in a career dedicated to helping others

Since 1977, we’ve served the community with honest, professional heating and cooling services. We are selective with who joins our team, and every tech is not only expertly trained in their craft with NATE certification, but focused on 100% customer satisfaction as well.

About Us

Our Services

Heating We’ve got the services and products to keep your home fully protected from the cold. With expert repair, replacement and maintenance options, you’ll never have to worry about your heat when you have Jerry Kelly.

Air Conditioning Whether your air conditioning unit has broken down or you’re looking for alternative cooling options, we’ve got you covered. Our AC experts can help you with any questions along the way.

Indoor Air Quality Your home’s air may suffer from a high level of indoor air pollution. You can tackle this problem with our professional air quality products and solutions.

Emergency Service We work round the clock to respond to any emergencies. We’ll be there fast and won’t give you any extra time to be in distress!

The Most Important Part of Our Company is Our Customers

Fantastic Job Alex J did a fantastic job installing and explaining our new heater. All of Kelly’s technicians have been extremely professional and knowledgeable. Ali 02/2021

I would highly recommend them Mike and Heath came out on a very cold Saturday and provided professional and friendly service. Resolved the problem so we could stay warm. I would highly recommend them. Brian 02/2021

Professional Service Thank you, Korey T., for restoring our heat! We appreciate your prompt and professional service! We have had a great experience with Jerry Kelly every time we have needed service. Summer 01/2021

Service Areas & Reviews