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  • We’re a Customer Service Company That Just Happens to do heating & cooling

    We’ve Been Leaders in the HVAC Industry Since 1977

    Learn More About Us
  • We’re Open 8am-8pm, 8 Days a Week!

    Nope, That’s Not a Typo!
    We’re Fast, We’re Friendly, We Got It Goin’ On!

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  • Savings We Work With Your Budget

  • We partner with the Alzheimer’s Association

    A Portion of Each of Our Service Calls Goes to the Alzheimer’s Association.

    Get More Details

St. Charles Heating & Cooling Services

Missouri’s Trusted HVAC Choice Since 1977

Since 1977, Jerry Kelly Heating & Air Conditioning has been committed to delivering top notch HVAC installations, repairs, and maintenance services, while never sacrificing customer experience or satisfaction. When the brutal winter and summer months hit our Midwest town, you want to be sure you can turn to your heating and air conditioning systems to provide the indoor comfort you need, and Jerry Kelly Heating & Air Conditioning is just the team to establish that reliability.

All of our HVAC specialists are certified by the North American Technician Excellence board, meaning that we are trained to quickly and successfully identify your problem and apply the correct, most cost-efficient solution.

Our Company History

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Active In the Industry and in the Community

What We Do!

Quality Work Meets Unmatched Customer Experience

Jerry Kelly Heating & Air Conditioning is your one-stop shop in St. Charles for installation, replacement, repair, and maintenance of any and every kind of heating and cooling system known to our industry. As HVAC professionals, our team stays up to date on the latest innovations in indoor comfort control such as zone heating and cooling systems, ductless air conditioning, and various types of air filters and purifiers, just to name a few. Our services do not end at comprehensive HVAC knowledge and training; we are available for 24/7 emergency repair to handle your problem and return your home or business to the comfortable space it should be. Don’t brave the Missouri heat and cold alone. Call the experts at Jerry Kelly Heating & Air Conditioning!

We offer senior and military discounts!

Furnace or Air Conditioning Tune-up!

*Cannot be combined with other offers. Not valid on prior purchases.

$ 89 % off

Any Service Repair

Excludes trip charge. Cannot be combined with other offers. Not valid on prior purchases.

$ 40 % off

Jerry Kelly Heating & Air Conditioning

4631 North St. Peters Parkway Saint Peters, MO 63304 Phone: 636.741.2010 Regular Hours: Monday – Sunday 8:00am - 8:00pm Service Area: We Proudly serve St. Charles & Surrounding Areas View Our Cities We Service

Hear From Our Past Customers!

  • Julie Matt and Curtis just left after installing a new system for us. They were here at 8:30am and it's not even 3pm and everything is done! They were courteous, fast, friendly, thorough in all regards, and incredibly knowledgeable about all aspects of the new system. They were also very organized in letting me know the details of future follow-up for Ameren rebates, county inspection, filter replacement, etc. We bought this house almost 3 years ago, and we're thankful that the previous owners had a Jerry Kelly installation and we resumed their maintenance agreement. We noticed our unit had problem yesterday, called in, and we were bumped to the head of the line. Shane was out here within an hour of my call, and today we have a brand new system. Excellent company to work with and I highly recommend them!

  • Colbert Jeff and Brandyn did a fantastic job of replacing our unit They were professional explained each step of the process answered questions and totally left everything clean and neat

  • shawn lennon I had no heat new year day and in 2 days Derek & Alex came and professionally installed a new furnace &ac Great Job Guys outstanding teamwork!

  • VanDeven Korey T. Was great and so glad he helped us today. Professional and explained everything. Thank you

  • Curtis Frost Ryan R. is an excellent technician. After asking what our furnace was doing and since it was an intermittent issue he had an idea what the problem was before he looked at it. He was able to get our system back up and running within minutes. He explained what he was looking at and why. He then completed a diagnostics on the entire system to ensure there were no other potential issues. Great job and would trust him to work on my HAVC system any time. Thanks Ryan so much. Happy New Year!


  • Fred Michalicek korey was able to take me thru all or the checks needed to ensure that every part was working as it should. He was very much a people person and I would want back any time I have a problem.

  • Marla On 12-29-17 Jeff & Brandyn installed a New AC/furnace system in my home. They were on time, worked efficiently and answered all questions I had. I truly appreciate the professional job they did. Jerry Kelly was recommended to me and I will certainly pass that on.

  • Richard K. Ryan R. performed the annual furnace inspection. He was on time, polite, and answered all of my questions to my satisfaction. He is a true professional and a credit to your company.

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