Granite City, IL Heating & Air Conditioning

Looking for a new boiler? Time to upgrade your air conditioner? Call Koesterer Heating & Cooling today!

Koesterer Heating & Cooling is Granite City, Illinois' leading heating and cooling company serving residential and light commercial customers. We have been offering professional heating and cooling services to customers in Granite City, IL and the surrounding areas for over 22 years. Whether you need repairs or maintenance, we service all makes and models of heating and cooling equipment. Contact us today at 618-451-7500!

At Koesterer Heating & Cooling, we are a family owned and operated business with over 30 years of experience in the heating and cooling profession. We are indoor air quality specialists able to meet all of your heating, cooling and air quality needs. Our customer's concerns are valued and we look forward to creating a solution that exceeds our customer’s expectations.

Our licensed and insured contractors at Koesterer Heating & Cooling offer a wide variety of services for jobs small and large. Whether you need a new installation, repairs or maintenance services, we have the knowledge and tools necessary to get the job done right. As an authorized dealer of American Standard equipment, you can rest assured you are getting quality. We offer free estimates so call today for more information!

American Standard

Call us today for a FREE in-home estimate at 618-451-7500!