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Jerry Kelly Heating and Air Conditioning, Inc.
R410A Refrigerant: What's Next

Learn about industry changes to air conditioner refrigerant and what St. Louis County homeowners can expect after the R22 refrigerant phase out. Read more!

What Is A SEER Rating?

It's one of the most important factors you should take into account when you're choosing a unit. So what is a SEER rating and what does it mean?

Preventative Maintenance Benefits

Spring snuck up on us a little early this year in the St. Louis area, which is all the more reason to start getting ready for the cooling season! Get the tips!

Jerry Kelly Helps Family in Need
Last fall, the family discovered that bad air quality in their home was causing Lizzy to get constantly sick. When Jerry Kelly heard about it, they did more than offer sympathy. They drew upon their expertise, and took action.
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Yes, Virginia, There are Polite Technicians
I had just about given up on seeing clean cut, polite technicians and installers in our industry. Many people say they don't exist. Learn More >>

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O'Fallon man feels lucky to be alive
Vincent Celano said he felt lucky to be alive after recovering from carbon monoxide poisoning. Emergency crews rescued Celano, 54, after he passed out in his O'Fallon home. Celano spent the night at St. Luke's in Chesterfield.
Family, strangers make a difference
Dale Franklin never thought the simple ringing of a bell would sound so good. But when Dale and Belinda Franklin's daughter, 6-year-old Izzy, rang a bell in early February to signal the end of her chemotherapy, the tone also signaled a new chapter for the family.

St Charles Heating & Air Conditiong Specialists

Jerry Kelly Heating & Air Conditioning: Your St Charles AC Repair & Installation Contractor

Check Out The Latest On The Jerry Kelly Blog
Looking for a St. Louis Area Air Conditioning Contractor? Here’s What to Look for (and What to Avoid)

Your air conditioner is one of your home’s most important appliances. Not only is it responsible for keeping your home comfortable, but it also has a huge impact on your monthly electric bills. So you wouldn’t want to leave your air conditioner in the hands of just any contractor, would you? Today we’re going to [...]

Friday 18th April, 2014
How to Detect Air Leaks in Your St. Louis Area Home

Do you have trouble keeping your utility bills low, even if your heating and cooling system is efficient and well-maintained? One common problem that impacts the overall efficiency of an otherwise efficient home is air leaks. Today we’re going to talk about how to detect air leaks in your home and what to do with the [...]

Thursday 17th April, 2014
What are the Features of an Energy Efficient Air Conditioner?

The air conditioners that are available today are many times more efficient than the systems that were available just a decade or two ago. Various different energy-saving features have been introduced that allow today’s systems to consume less energy than ever before. Today we’re going to highlight some of the features of energy efficient air [...]

Friday 11th April, 2014
Should I Get a Zoning System for My House?

A zoning system is a feature that can be added to your home’s furnace and air conditioner that makes it possible to heat and cool different parts of your home separately. You’ll still have just one heating and cooling system, but you can install multiple thermostats to control separate “zones” in your home.

Wednesday 9th April, 2014
Why Regular Maintenance Is So Important To Your Cooling System

What is Sick House Syndrome and Why Should St. Louis Homeowners Know About It?
Although Mother Nature has its own way of cleaning the air outside, the same can't be said for our homes. In fact, over the past 30-40 years, our homes have become more and more susceptible to polluted air — a phenomenon known as sick house syndrome.

So what is sick house syndrome and how can you protect your family from its harmful effects?
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What is a Home Air Cleaner and How is it Different Than a Filter?
Many St. Louis area homeowners are familiar with air filters and how they help protect your furnace from airborne particles. But did you know you have another option for protecting your furnace that also helps keep your family healthy? It's called a home air cleaner, and it's a great way to improve the air quality in your home.
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Gas Furnace Maintenance Tips for St. Louis Area Homeowners
Now that we've settled into the heating season here in the St. Louis area, it's a good time to talk about gas furnace maintenance and what you can do to keep your unit running smoothly throughout the winter.
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How Does a Heat Pump Work?
Although gas furnaces are the most common type of heating system found in St. Louis area homes, heat pumps are another great option for anyone who is looking to save energy and lower utility bills.

These highly efficient units can actually be used to both heat and cool your home. Since it is winter, we'll focus on explaining how a heat pump can heat your home, but it's worth noting that the process is simply reversed to cool your home during the summer.
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Jerry Kelly Testimonials

A NATE Certified Jerry Kelly Service Technician arrived just one hour after Tracey called to have her broken air conditioner fixed. She was so happy that she wanted to tell the world. See more >>

From Our Customers, Directly To You
The service with Jerry Kelly is always top notch. Our tech was wonderful, very informative and courteous.
-Stephanie T.

The technician was so nice — worth every penny! Also, he wore booties and I love that.
- Kim T.

Tech was most pleasant and informative one I have had of any type of tech I have had out here. Great appearance too! Means a lot!!
- Todd D.

Very pleased with furnace/a/c and glad we had both systems installed at same time. Techs are always impressively efficent and polite.
- Michael V.

Both systems run fine. Your company is always right on time, pleasant and very helpful. Thank you.
- Kathy C.

Thanks for coming out on short notice!! Your business hours are great.
- John W.

Your serviceman was the most courteous and knowledgeable. He's a "keeper".
- Artys G.

Audio Testimonials

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Local Reviews

Rated 4.9 out of 5 stars based on 550 customer reviews


He called before arriving. Made sure I had answers to all questions

Prompt Service

Very knowledgable serviceman. He worked quickly.


Great Price


friendly & great service

Recent Jobs

Mark H.

Servicing a Jerry Kelly Emerald AC to ensure proper operation and help lower utility bills.

Near Cedar Grove Dr, St. Charles, MO 63304

Mark H.

Servicing a Jerry Kelly Emerald AC to ensure proper operation and help lower utility bills.

Near Cedar Grove Dr, St. Charles, MO 63304

Scott E.

Just install a Jerry Kelly emerald series air conditioner and coil

Near Brookneal Dr, St. Charles, MO 63304

David G.

Installing an emerald furnace, a/C and coil in O'Fallon missouri.

Near Lauralee Dr, O'Fallon, MO 63366

Tom J.

installation of new jerry kelly emerald system

Near S Willow Grove Ct, St. Peters, MO 63376

Tom J.

installation of new jerry kelly emerald system

Near S Willow Grove Ct, St. Peters, MO 63376

Mike S.

furnace repair and air conditioning check

Near Hermitage Ln, St. Peters, MO 63376

Shaun M.

Repair malfunctioning air conditioner

Near De Loire Dr, Lake Saint Louis, MO 63367

Ronan w.

Air conditioning maintenance

Near Zumbehl Rd, St. Charles, MO 63303

Mark H.

Servicing a Jerry Kelly Emerald AC to ensure proper operation and help lower utility bills.

Near Wilkesboro Dr, O'Fallon, MO 63368

Kevin A.

Servicing a Jerry Kelly Emerald AC for proper operation and to help lower utility bills.

Near N Duchesne Dr, St. Charles, MO 63301

Michael Y.

Tuneup a Jerry Kelly Emerald AC

Near Oak Crest Manor Ln, Wildwood, MO 63011
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