We value all customer feedback. Sigman Heating and Air Conditioning, Inc. prides itself on taking advantage of all customer feedback in order to continually better ourselves. This ensures that we are able to give you the best possible experience when it comes to installing, maintaining and repairing your HVAC system.

[The salesman] was professional, friendly and knowledgeable. Sigman office staff friendly and accommodating. [The installers] worked hard (even in the rain) to complete our job. They explained everything and were friendly and neat. They work well together and make a good team.

-Tom H., Belleville, IL

The technicians were very efficient and worked together like clockwork. They completed the job in one day and cleaned up all the area and did not make a mess

-Marc E., Columbia, IL

Contractor is the best in our area. Many good past experiences and the very best personnel.

-John C., Belleville, IL

We just wanted to thank you for your speedy service. We discovered our furnace was not working on our lunch. We called you and by evening we had our heat running. You were a life saver.

-Rick C., Valmeyer, IL

We appreciate all your effort in making sure our recent investment was up and operating to our expectations and satisfaction. Jerry and your team did a great job!

-Rebecca T., Glen Carbon, IL

If the quality of Sigman service technicians is an indication of the quality of your product, then I know we will be quite pleased.

-Shiela U., Belleville, IL

[Your service technician] was so professional; took care of the problem quickly, explained what he was doing. I couldn’t have been more pleased with the service call. I will definitely call on your company again for any and all service needs at my house and office.

-Paul F., St. Louis, MO

Thank you again. The restaurant has been very cool this summer and the power bill for one month seems to be reduced by 20%. As always, you will be highly recommended by us for your excellent service to our family business.

-The Chuck Wagon, Fairview Heights, IL

It is really great to know that on an ongoing basis our A/C and Heating needs will be handled by a very good company with great associates.

-Pam Q., Belleville, IL

Very satisfied with the system. Have saved on heating/cooling bills since it has been installed. Runs efficiently and quietly. We have done business with Sigman for the past 20 years. From the owner, down through the employees, all are friendly, courteous and knowledgeable. A very well run business.

-Tom L., Swansea, IL



We're proud to receive Angie's List (now Angi) Super Service Award for the fourth year straight. Find out what others are saying about us!




Sigman Heating & Air Conditioning is a registered Program Ally of the Ameren Illinois Energy Efficiency Programs.





6200 Old St. Louis Road
Belleville, Illinois 62223 US

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Ph: 618-234-4343
MO: 314-436-2600