• Call Our Dispatch Numbers at 

  • When You Need a Mechanic,
    Not a Salesman!

  • Here at Dependable Heating and Cooling, we take great pride in carrying infamous brands, like Coleman, that live up to the expectations for quality. We specialize in residential and light commercial HVAC installations and repairs throughout O’Fallon, IL.

    We offer military and senior discounts!

  • For Emergency Repairs Call Our Dispatch Number: 618-632-5171

  • Expert Heating & Cooling Services in O’Fallon, IL

    From cleaning out your air filtration unit to reduce allergens, to installing a rooftop heating and cooling system for your business, we are the specialists for the job. With over 20 years of experience in the HVAC industry, we are the premier choice for HVAC installation and repair.

  • Light Commercial Services

    • AC Repairs & Replacement
    • Heating Repairs & Replacement
    • Thermostat Repair

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  • Air Conditioning Services

    • AC Repair (Any Brand)
    • AC Replacement
    • Emergency AC Repair

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  • Heating Services

    • Maintenance & Repair
    • Replacement
    • Thermostat Repair

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  • Air Filtration Services

    • Purifies Stale Odors & Allergens
    • Eliminates Molds, Germs, and Pollen
    • Keeps Air Clean

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  • HVAC Repair

    Whether you need AC installation for a small home or an entire building, our highly trained and experienced contractors will bring you professional assistance that you can depend on. We install Coleman, Goodman and Fujitsu brands.

  • For Instant or Emergency HVAC Repair Services, Call One of Our Local Dispatch Phone Numbers Below

  • Dependable Heating & Cooling

  • Address: PO Box 8427, Belleville, Illinois 62222