Sigman Heating & Air Conditioning, Inc.

We’ve served Belleville and the Metro East for over 30 years, helping homeowners and businesses stay comfortable through hot St. Louis summers and cold Illinois winters. Our NATE-certified technicians service all brands of residential and light-commercial heating and cooling equipment. We work on furnaces, air conditioners, heat pumps, boilers and other HVAC systems, providing maintenance, repairs and complete system installations.

When it’s time to replace an existing system, renovate a property or plan a new home or commercial building, our experienced team can help identify the right equipment for the space. We sell and install most brands of heating and air conditioning systems, including standard split systems, high-efficiency heat pumps, geothermal systems and hybrid geothermal air systems. We also provide commercial refrigeration service for walk-ins and coolers, along with in-house sheet metal fabrication for custom ductwork. Our duct-cleaning technology scrapes debris from the sides of the ductwork and removes it using HEPA vacuuming equipment.

We’re proud to serve customers in Belleville, Shiloh, Columbia, Edwardsville, Waterloo, O’Fallon and throughout the St. Louis area on both sides of the river. Whether you need routine system maintenance, heating or cooling repair, new equipment or HVAC planning for new construction, we’re ready to discuss your needs. Call us anytime at 618-234-4343 or visit us at 6200 Old St. Louis Road in Belleville, Illinois.