
Areas We Serve
Also Serving Throughout the Metro East Area
BEL-O Cooling & Heating
BEL-O Cooling & Heating Inc is based in O’Fallon, IL, and serves residential and commercial customers throughout the area. Contact us today for your heating and cooling needs!
We are proud to offer service in and around the following communities:
- Albers
- Aviston
- Beckemeyer
- Belleville
- Breese
- Carlyle
- Caseyville
- Collinsville
- Columbia
- Edwardsville
- Fairview Heights
- Freeburg
- Germantown
- Glen Carbon
- Granite city
- Highland
- Lebanon
- Maryville
- Mascoutah
- Millstadt
- New Baden
- O'Fallon
- Scott AFB
- Shiloh
- Smithton
- St. Jacob
- Swansea
- Trenton
- Troy
- Waterloo


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“Couldn't wish for a better company and employee to service my home heating and cooling.”
Karen H. -
“Jason was professional and courteous.”
Sue S -
“They replaced my sump pump.”
Rick H. -
“Anthony thoroughly checked the gas water heater for proper operation”
Becky G -
“Jason was on time, polite, and professional.”
Wayne S -
“The experience was great as he took his time to clean and inspect the system and to go over any findings/recommendations he had for us.”
Stephanie S.

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1. Third Generation, Family-Owned Since 1959
Our grandfather started this business to serve his community decades ago, and we take the same pride in that service.
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2. Decades and Decades of Industry Experience
Since we opened, we've prioritized expertise in both traditional and innovative industry practices to serve you better.
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3. Honest & Transparent Technicians Who Never Oversell
We want to provide you with a number of solutions and help you pick the right one for you, not the right one for us.
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4. Full Capability One-Stop Shop for Heating & Cooling
From keeping the air in your home safe and cool to manufacturing sheet metal, you are in capable hands.