Browse the Top 2 HVAC Companies Serving Carterville, IL

Charlie's Air Conditioning & Heating is a family-owned Southern Illinois business specializing in residential and commercial HVAC services since 1982. We provide expert installation, repair, and maintenance for air conditioning, heating, insulation, and commercial HVAC systems. Our purpose is to enhance comfort and energy efficiency through skilled craftsmanship and high-quality YORK products.

RSP Heating & Cooling delivers comprehensive energy solutions for residential and commercial properties throughout Southern Illinois. Our certified technicians specialize in HVAC installation and repair, solar power systems, spray foam insulation, backup generators, and geothermal heat pumps. We maximize comfort, efficiency, and resilience through integrated, whole-home services backed by 20 years of proven expertise.