Air Conditioning and Heating Professionals

Sigman has been family owned and operated since 1988. We are located in Belleville, IL, and service the entire St. Louis Metropolitan area. From Edwardsville to Waterloo, O'Fallon to Belleville and all points in between, we keep you comfortable.

Every Sigman Air Conditioning technician is proficient in repairing and servicing every brand of HVAC equipment. We also repair wine cellars, commercial refrigeration, duct work, water heaters and much more. Our expertise is not limited to air conditioning and heating.


Sigman Heating & Air Conditioning, Inc.
Sigman Indoor Climate Solutions LLC

6200 Old St. Louis Road
Belleville, IL 62223

St. Clair County: 618.234.4343
Collinsville: 618.344.4343
Columbia: 618.281.8272
Edwardsville: 618.962.4343
Missouri: 314.436.2600
Waterloo: 618.939.3232
Fax: 618.234.9300


HVAC Air Conditioning and Heating Professionals

At Sigman Heating and Air Conditioning, Inc. we provide the best quality workmanship at an affordable price. From our bi-annual air conditioning and heating maintenance checks to new HVAC installation, we can cover all of your Indoor Climate Solution needs.

Find out how our culture of respect extends beyond heating and air conditioning maintenance and sales and into the world around us. It's part of the reason that we take recycling seriously, sponsor and donate to causes that matter, and honor our community. It's not just about air conditioning and heating, it's about making Belleville and all the towns we serve better communities.

An exemplary rating from Angie's List customers earned us the Super Service Award for HVAC Air Conditioning and Heating!


Air Conditioning Maintenance Qualifications

Our HVAC air conditioning and heating technicians are qualified to work on all brands of HVAC equipment. Learn more about the continuing education and training that keeps our heating and air conditioning maintenance technicians up-to-date with HVAC technologies. Our technicians are NATE certified, which means only the very best are maintaining, repairing and installing your equipment.