BEL-O Cooling & Heating Inc.


90 Whitehall Dr
O Fallon, IL 62269-2679
(618) 589-1788
Closed Today
ATM/Debit, Discover, Financing Available, Personal Checks, Cash, Mastercard, Visa
Air Quality Solutions Done Right.
BEL-O Cooling & Heating provides residential and commercial HVAC sales, service and installation in the O' Fallon, IL area. BEL-O has been a family owned and operated company since we opened our doors in 1959. We service all makes and models and also provide plumbing services.

Our repair and new installation services include:

  • Preventative maintenance
  • Service agreements and extend warranties
  • Indoor air quality
  • Duct cleaning and sealing
  • Drain and sewer
  • HVAC
  • Geothermal heating system
  • Boilers and Furnaces

    We also sell and repair fireplaces. Our team at BEL-O Cooling & Heating consists of professionals from several trades. We have sheet metal workers, heating and cooling technicians, plumbers, pipefitters, design engineers, sales specialist and customer service personnel. Our trained technicians can care for any indoor comfort system your home or business may have, even if it is not a Carrier System.

    Call BEL-O Cooling & Heating today for prompt and reliable service!
  • Mon 8:00 AM to 5:00 PM
    Tue 8:00 AM to 5:00 PM
    Wed 8:00 AM to 5:00 PM
    Thu 8:00 AM to 5:00 PM
    Fri 8:00 AM to 5:00 PM
    Sat Closed
    Sun Closed

    Products and Services

    Air Conditioning Contractors
    Air Conditioning Repair
    Air Duct Cleaning
    Boiler Cleaning
    Boiler Installation
    Boiler Maintenance
    Commercial Cleaning
    Commercial HVAC
    Duct Work
    Fireplace Cleaning
    Fireplace Installation
    Fireplace Maintenance
    Fireplace Repair
    Furnace Cleaning
    Furnace Installation
    Furnace Maintenance
    Furnace Removal
    Furnace Repair
    Geothermal Heating & Cooling
    Air Conditioning Equipment
    Commercial Boilers
    Commercial HVAC Equipment
    Electric HVAC Equipment
    Gas Fireplaces
    Gas HVAC Equipment
    Geothermal Systems
    HVAC Equipment Rental

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