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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
Furnace Thermostat Settings: Adjustments to Make to Properly Heat Your Home

Summer is winding down, and the time is quickly approaching when we’ll be turning on our furnaces for the first time of the year. Although switching from your air conditioner to your furnace is an easy task, there are some changes you’ll want to make to your thermostat to ensure that you get the best [...]

Friday 19th September, 2014 READ MORE >>
Do New Furnaces Work Differently than Old Furnaces?

There have been many advances in the heating and cooling industry over the past couple decades alone. And when homeowners hear about some of these changes, they sometimes ask, “Do new furnaces work differently than old furnaces?” This is a great question that depends on the age and style of your current furnace. Today we’re [...]

Wednesday 17th September, 2014 READ MORE >>
What to Keep in Mind When Switching from Air Conditioning to Heating in Your St. Louis Area Home

In the upcoming weeks, the cooling season will be winding down and many homeowners will begin preparing for this year’s heating season. Around this time of year, many homeowners have questions about switching from air conditioning to heating in their homes. Today we’re going to talk about the relationship between air conditioners and furnaces and [...]

Friday 12th September, 2014 READ MORE >>
Fiberglass Air Filters: The Advantages and Disadvantages of using them In Your St. Louis Area Home

Fiberglass air filters are some of the most commonly used filters in St. Louis area homes. Although there are some good reasons to use fiberglass filters, they aren’t always the best option for homeowners. Today we’re going to talk about what fiberglass air filters are and the advantages and disadvantages of using them with your [...]

Wednesday 10th September, 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.
Learn More >>

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 1256 customer reviews

Map of O'Fallon, MO

John




Good service


Map of St. Charles, MO

Tom Glenn




Great unit, great service, great people. Outstanding.


Map of St. Charles, MO

Barb




Great service


Map of St. Peters, MO

Great Service





Map of Lake Saint Louis, MO

HVAC install





Ben S.

Ben S.

Working on a furnace that broke down.

Near Elm St, St. Charles, MO 63301
Graham B.

Graham B.

Tuning up a furnace for a Jerry Kelly customer.

Near Gettysburg Landing, St. Peters, MO 63303
Will L.

Will L.

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

Near BaratHaven Trail, Dardenne Prairie, MO 63368
Ben S.

Ben S.

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

Near MO-94, Weldon Spring, MO 63304
Ben S.

Ben S.

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

Near MO-94, Weldon Spring, MO 63304
Will L.

Will L.

Repairing an air conditioner that had malfunctioned.

Near Silas Ct, St. Charles, MO 63304
Ronan  w.

Ronan w.

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

Near Mid Rivers Mall Dr, Cottleville, MO 63376
Ryan S.

Ryan S.

Troubleshooting a furnace that broke down.

Near Quakers Pl, O'Fallon, MO 63366
Daniel S.

Daniel S.

Tuning up and cleaning a furnace.

Near Bryan Rd, O'Fallon, MO 63366
Ryan S.

Ryan S.

Troubleshooting a furnace that broke down.

Near Falcon Hill Dr, O'Fallon, MO 63368
Ryan S.

Ryan S.

Troubleshooting a furnace that broke down.

Near Charity Dr, Lake Saint Louis, MO 63367
Lonnie L.

Lonnie L.

performing a tune up for a Jerry Kelly customer to prevent break down and lower utility bills

Near Dawnbreak Ct, 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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