• Financing Available
  • Major Credit Cards Accepted
  • Bonded and Insured
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Proudly Serving: Belleville, Columbia, Coulterville, Fairview Heights, Fayetteville, Freeburg, Hecker, Marissa, Mascoutah, Millstadt, Monroe County, New Athens, O'Fallon, Randolph County, Red Bud, Scott Air Force Base, Shiloh, Smithton, Sparta, St. Clair County, Waterloo
Senior citizen and military discounts - Randy's Heating & Cooling in Illinois

Expert Furnace & Air Conditioning Service



Randy's Heating & Cooling provides high-quality heating and cooling services for residents throughout Monroe, St. Clair Counties, and surrounding areas. We are proud to be locally-owned and operated for more than 20 years. We serve both residential and commercial customers.

We specialize in repairing and servicing all types of HVAC systems and central air systems. We're an authorized dealer of Trane heating and cooling systems and offer repair services for all makes and models. All work is guaranteed. We install Trane and Coleman units. Call 618-660-8982 today to request a free estimate.

We are available 24/7 by phone and email. Emergency services are also available around the clock. We accept all major credit cards and offer affordable financing options. Discounts are also available! Contact us today to learn more. We look forward to speaking with you.

Heating Services

  • Furnaces
  • Heat Pumps
  • Gas and Oil Systems
  • Boilers
  • Heating Work for Garages and Pole Barns
Boiler in Tiled Room — HVAC Service in New Athens, IL
Humidifier Releasing Smoke — HVAC Service in New Athens, IL

Cooling Services

  • Humidifiers
  • Compressors
  • Mobile Home Systems
  • Heat Pumps
  • Code Violation Corrections

Service Area

  • Belleville
  • Columbia
  • Coulterville
  • Fairview Heights
  • Fayetteville
  • Freeburg
  • Hecker
  • Marissa
  • Mascoutah
  • Millstadt
  • Monroe County
  • New Athens
  • O'Fallon
  • Randolph County
  • Red Bud
  • Scott Air Force Base
  • Shiloh
  • Smithton
  • Sparta
  • St. Clair County
  • Waterloo

Satisfied Customers


Contact Randy’s Heating & Cooling for service on all brands of furnaces, heat pumps, boilers and AC equipment.