Belleville AC Service Call for More Information Today!618-400-0905
Serving Belleville and beyond
Air Conditioning Service Belleville
When it comes to your air conditioning system, regular service is the key to uninterrupted comfort and efficiency. BEL-O Cooling & Heating’s comprehensive AC services are designed to keep your air conditioner in prime condition, ensuring it runs smoothly throughout the year.
Thorough inspections and maintenance can extend the lifespan of your air conditioning system, while also identifying potential issues before they escalate into big problems or total breakdowns. BEL-O Cooling & Heating’s AC services can also help make sure your system is running at peak energy efficiency.
BEL-O Cooling & Heating: Your Local AC Service Company
As your local AC service company, BEL-O Cooling & Heating is committed to protecting your comfort—and your wallet—with quality workmanship by licensed and insured professionals.
Ready for top-tier AC service? Call (618) 400-0905 to schedule your next appointment with BEL-O Cooling & Heating. We look forward to helping you!
In the Words of Our Customers
5.02000 Reviews
K"Always Professional and Courteous"
Enjoy the conversations about activities and my HVAC system.
Ken Schieler
L"Quality Products and Professional Service"
They have quality products and are very professional.
Lawrence Schmitt
D"They did an awesome job."
They did an awesome job. Very satisfied.
Donna Whitlow
B"Jim was great."
Jim was great: neat, clean, professional, very nice.
Barbara Cramer
B"Great job, Brian!"
Brian quickly isolated the problem and fixed it.
Bob Sylvester
A"Knowledgeable and Efficient Technician"
Alex was efficient and quick with the job.
Ann Porter
J"Five stars for Bel-O"
Five stars for Bel-O. Jim and Evan did a great job installing a new tankless water heater.
James Hodge
K"Evan Gaynor did a fantastic job"
Our technician, Evan Gaynor, did a fantastic job. We would definitely recommend him.
Kristin Clinger
s"Replaced the Gas Valve Quickly"
Jim replaced the gas valve on my furnace quickly, double-checked all connections, and ensured everything worked properly.
stephen dirnbeck
t"Fixed in Less Than 30 Minutes"
Very fast getting to my house; fixed in less than 30 minutes.
tina ramsey
B"Fixed overflow promptly!"
Evan came in and immediately spotted the issue with our washing machine overflowing and was able to fix it promptly!
Briana Green-Bowe
M"Evan did a great job explaining"
Evan did a great job explaining what occurred and making the repairs in a timely manner.
Michael Richards
G"He is a professional"
He is a professional in all that he does. He greets me with a smile and keeps me informed of everything going on.
Gregory Howell
L"Incredible Job"
Always an incredible job. Extremely grateful and pleased with this company.
Luis Davila
D"Tech Jim was great!"
Bel-O was able to come out quickly and resolve the issue. Much appreciated!
Dennis Wagner
K"Very Nice and Helpful"
The two that were here were very nice and advanced me on all I need to know.
Keith Sanders
C"Always Completely Satisfied"
Technicians are very friendly and explain everything.
Cindy Harris
K"Furnace problem fixed to my satisfaction"
Anthony was very professional and personable.
Kenneth Bunch
D"Very Professional"
Service was taken care of quickly. Very professional.
Dean Powers
B"Anthony's Professionalism"
We appreciate Anthony and his professionalism.
Bob Picchietti
K"Amazing service from this company"
Service tech was outstanding, personable, and very polite.
Kevin Woelffel
R"Would highly recommend"
Showed on time, discussed what they will be doing, very polite. Good experience, would highly recommend to others.
Robert Druessel
T"Timely and Professional Response"
Timely and professional response to my elderly father's need for heat.
Terrance Baker
Z"Great Experience"
Tech was very quick and professional. Equipment working excellently after service.
Zachary Ward
C"They are terrific!"
Technician was professional, positive, and very helpful. They are terrific!
Charles Edwards
g"Great Experience!"
Showed up on time and completed the work quickly.
golfsafb
A"Evan was wonderful with assistance"
Evan was wonderful with assistance for both plumbing inspection and fixing small issues.
Angie Baron
N"Showed Up on Sunday Morning"
These are the old-time craftsmen you remember. Show up as planned, perform the work, clean up, and leave.
Norel Pride
J"Smooth Installation Experience"
Everything went great from the initial call to the follow-up visit. Installation went quickly and smoothly.
Jenn Mench
J"Solid Team"
Ryan was very cooperative on our initial phone call, Sabrina couldn’t have been more pleasant.
Jimmy Castelli
Always Professional and Courteous
Always professional and courteous. Enjoy the conversations with him about regular activities as well as the health of my HVAC system. It's good to have the same technician for most of the visits.
Ken Schieler
Quality Products and Professional Service
I have been a customer of Bel-O Cooling & Heating for over 40 years. They have quality products and are very professional.
Lawrence Schmitt
They did an awesome job.
They did an awesome job. Very satisfied. I recommend them and will use them again if needed.
Donna Whitlow
Jim was great.
My technician was Jim Gauch. He wasn’t on the list of techs; he’s new! But Jim was great. Neat, clean, professional, very nice! Cleaned up after himself, friendly.
Barbara Cramer
Great job, Brian!
Great job, Brian! My water pressure in my geothermal loop was extra low. Brian quickly isolated the problem and fixed it.
Bob Sylvester
Knowledgeable and Efficient Technician
The technician, Alex and his partner, arrived during the given time window. He seemed very knowledgeable. I had a new Carrier HVAC system installed. He had a hard job as the HVAC system had to be installed in an unfinished basement with several very steep steps. He was efficient and quick. He took time after the installation to answer my questions about the HVAC and the new digital thermostat.
Ann Porter
Five stars for Bel-O
Jim was excellent and did a great job. He was a real pleasure. John came out a few days later to measure for a tankless water heater and came up with a very good offer. Thanks Bel-O.
New edit: 2/27/2025 Evan and Jim returned today to install a new tankless water heater. They did a great job installing and explaining how it works. They also cleaned up perfectly when they finished. Five stars for Bel-O.
James Hodge
Evan Gaynor did a fantastic job
Our technician (Evan Gaynor) did a fantastic job. We would definitely recommend him and would call back if we need any other work.
Kristin Clinger
Replaced the Gas Valve Quickly
Jim replaced the gas valve on my furnace quickly. He double-checked all connections and made sure everything worked properly.
stephen dirnbeck
Fixed in Less Than 30 Minutes
Very fast getting to my house; was fixed in less than 30 minutes.
tina ramsey
Fixed overflow promptly!
Evan came in and immediately spotted the issue with our washing machine overflowing and was able to fix it promptly! Thank you!
Briana Green-Bowe
Evan did a great job explaining
As usual, Evan did a great job explaining what occurred, what would be needed to correct the issue, and making the repairs in a timely manner. Evan also went out of his way to answer any/all other questions we had, and ensured we knew what was warrantied, and for the timeframe of the warranties for the parts and service.
Michael Richards
He is a professional
The service man lives in Columbia, but his name escapes me. He is a professional in all that he does. He greets me with a smile and keeps me informed of everything going on. This was a follow-up call.
Gregory Howell
Incredible Job
Always an incredible job. I am extremely grateful and pleased with this company.
Luis Davila
Tech Jim was great!
Needed some work on our gas fireplace and Bel-O was able to come out quickly and resolve the issue. Much appreciated, especially in cold weather! Tech Jim was great!
Dennis Wagner
Very Nice and Helpful
The two that were here were very nice and advanced me on all I need to know.
Keith Sanders
Always Completely Satisfied
We have been using Bel-o for years and are always completely satisfied with their work. And the technicians are very friendly and take the time to explain everything, which I appreciate.
Cindy Harris
Furnace problem fixed to my satisfaction
The furnace problem was fixed to my great satisfaction. Anthony was very professional and personable.
Kenneth Bunch
Very Professional
Service was taken care of quickly. Very professional. Highly recommend.
Dean Powers
Anthony's Professionalism
We appreciate Anthony and his professionalism. He’s a good dude and, of course, knowledgeable.
Bob Picchietti
Amazing service from this company
Once again, amazing service from this company. Service tech was outstanding, personable, and very polite. It's why I continue to return to this company for my plumbing needs.
Kevin Woelffel
Would highly recommend
Showed on time, discussed what they will be doing, walked through house and basement. Very polite and explained what they were going to do and how. Showed me the vapor catcher before and after he cleaned the catcher. Good experience. Would highly recommend to others. And they cleaned up afterwards.
Robert Druessel
Timely and Professional Response
Timely and professional response to my elderly father's need for heat. I would definitely recommend them.
Terrance Baker
Great Experience
Great experience, tech was very quick and professional. Equipment working excellently after service.
Zachary Ward
They are terrific!
Technician was professional, positive, and very helpful. They are terrific!
Charles Edwards
Great Experience!
Great experience! Showed up on time and completed the work quickly and efficiently just like you always want to have it done.
golfsafb
Evan was wonderful with assistance
Evan was wonderful with assistance for both plumbing inspection and fixing small issues as well as cleaning my duct work and replacing a few boots on my floor. Very polite, kind, and professional.
Angie Baron
Showed Up on Sunday Morning
These are the old-time craftsmen you remember. Show up as planned, perform the work, clean up, and leave. Showed up on Sunday morning in winter when my furnace went toes up! My peeps!
Norel Pride
Smooth Installation Experience
Everything, from the initial call for an estimate to the follow-up visit to adjust settings, went great. I interacted with a total of (maybe) five people, but they were all friendly and helpful. We had a water softener installed. They were reasonably priced for this service (I compared a few local companies). The installation went quickly and very smoothly. When we had questions after the install, I called and someone came by to check on things, explain things, and let us know everything was working (but how to adjust things if we wanted).
Jenn Mench
Solid Team
I’m impressed with Bel-O. Ryan was very cooperative on our initial phone call. Sabrina couldn’t have been more pleasant and prompt in getting me answers to my questions, and John is clearly a very skilled professional at his craft. They have a solid team, thanks for the service.
Jimmy Castelli
Why Choose BEL-O Cooling & Heating
At BEL-O Cooling & Heating, we have built a legacy of trusted service and technical prowess in the O’Fallon area since 1959. Our skilled team is committed to providing reliable heating, cooling, and plumbing solutions that prioritize your comfort and convenience.
Why Choose Us:
Established, family-owned since 1959
Carrier Factory Authorized Dealer
Flexible financing options available
Comprehensive services by multi-skilled professionals
Continual emphasis on training for cutting-edge solutions
