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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.
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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.
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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
Why Does My Furnace Smell Like Something’s Burning?

Around this time every year, we hear from homeowners who are concerned that their furnaces are giving off a burning smell. This can be quite alarming if you’ve never experienced it before. As it turns out, a burning smell from a furnace is very common, but it’s also something that shouldn’t be ignored. In order [...]

Wednesday 29th October, 2014 READ MORE >>
Why is My Furnace Not Kicking On? Here are a Few of the Most Common Reasons

Have you ever walked into your home on a freezing cold day, hoping to be greeted by the warm air from your furnace, only to realize that it’s almost as cold inside as it is outside? During the winter months, there’s nothing as frustrating as a furnace that won’t turn on! We don’t want to [...]

Friday 24th October, 2014 READ MORE >>
Furnace Problems Caused By Running Your System with a Dirty Filter

No matter what time of the year it is, a dirty air filter can cause major problems with your heating and cooling system. In fact, one of the top reasons we visit homes for furnace and air conditioner repairs is because a system has been running with a clogged filter. We want to stress the importance [...]

Wednesday 22nd October, 2014 READ MORE >>
What Will Happen If I Don’t Get a Furnace Tune-Up?

Around this time of year, we talk a lot about the importance of getting your annual furnace tune-up. But if you’re unfamiliar with furnace tune-ups, you might be wondering whether or not it’s necessary to get one every year. Today we’re going to help you understand why furnace tune-ups are so valuable by answering the [...]

Friday 17th October, 2014 READ MORE >>
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 1527 customer reviews

Map of St. Charles, MO

Always htest service with Mike F.





Map of St. Charles, MO

Great installation




The set up on comfordguard is too difficult to set with att Uverse. Took longer to program than part of the installation.


Map of St. Charles, MO

Excellent Service!




Steve was very helpful, detail-oriented and patient while my husband and I decided on replacing our furnace and AC units. He explained everything very well and sometimes even twice so my husband could hear. Excellent experience. Steve knows his products and profession!


Map of St. Peters, MO

Great Service




Will L. listened to the problem I was having with my smoke/carbon detector's and then went to work to identify what could be wrong. Initially I thought the detector's were being set off somehow by my furnace but everything checked out. He did a thorough job, also answered all my question's and any concern's I had. So far the problem is fixed. Very happy.


Map of St. Charles, MO

Great Service!




We are always greeted by pleasant, courteous Kelly personnel. They are experienced and willing to share their expertise with the homeowner. We have always had pleasant experiences with Kelly and will continue to use their service. We will happily refer people to Kelly.


Darin A.

Darin A.

Troubleshooting a furnace that broke! Gas Heater Repair. Furnace Service

Near Queen Ann Dr, Hazelwood, MO 63042
Hazelwood, MO - Troubleshooting a furnace that broke! Gas Heater Repair. Furnace Service
Damion O.

Damion O.

Servicing a furnace that has malfunctioned.

Near Gran Lin Dr, St. Charles, MO 63303
John W.

John W.

Servicing a furnace that has broken

Near Dardenne Greenway Trail, St. Peters, MO 63376
Ben S.

Ben S.

Performed precision furnace tune up to ensure that the system is safe and operating at manufacturers specs.

Near Hunting Creek Rd, St. Peters, MO 63376
Will L.

Will L.

Servicing a gas furnace to ensure proper operation and utility bills.

Near Florine Blvd, St. Charles, MO 63303
Derek J.

Derek J.

Instal a new Jerry Kelly emerald furnace ac and a coil.

Near Bridle Spur Ln, St. Charles, MO 63303
Derek J.

Derek J.

Near Bridle Spur Ln, St. Charles, MO 63303
Dan S.

Dan S.

Tuning up a furnace

Near Spencer Hill Dr, St. Peters, MO 63376
Del S.

Del S.

Fixing a furnace that broke down.

Near Santa Ynez Dr, St. Charles, MO 63303
Will L.

Will L.

Repairing a furnace that had malfunctioned.

Near Wentzville, MO 63385
Damion O.

Damion O.

Servicing a furnace that has malfunctioned.

Near Master Card Blvd, O'Fallon, MO 63368
John W.

John W.

Servicing a furnace that has broken

Near Muegge Rd, St. Charles, MO 63303
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Jerry Kelly Heating and Air Conditioning, Inc. | 800 N 2nd Street | Saint Charles, MO  63301 | 636-757-8506
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