Koesterer Heating & Cooling

In 1992, Koesterer Heating & Cooling came to life to provide quality HVAC service and professional results to residents of the state of Illinois. It was our mission to offer only the highest quality standards the industry has to offer.Koesterer Heating & Cooling has been paving the way for future innovation and advancements in the HVAC industry. Our shop boasts impressive equipment and we are...

Offering Heating and Cooling ServicesService man testing air conditionAre you looking for a trusted HVAC contractor in Granite City, IL? Turn to Koesterer Heating & Cooling Inc. We offer high-quality heating and cooling equipment to keep your home cozy. Whether you need heating or cooling installation, repair, or maintenance services, we can help you out.Over Three Decades of ExperienceFor more...

Koesterer Heating & Cooling Inc., serving Granite City, IL and surrounding communities, offers heating, HVAC and cooling services quickly and affordable. We serve commercial and residential customers with superior products and professional customer service. We are here to help you get the maximum performance and life out of your system.Our services include:? Heating installation, repair and...

Professional, fast and dependable HVAC work.

Koesterer Heating & Cooling, serving Granite City, IL and surrounding areas, offers heating, HVAC and cooling services quickly and affordable. We serve commercial and residential customers with superior products and professional customer service.

Since most people don't follow the maintenance requirements for their heating and cooling systems, we...

We believe that using quality products is what's best for the consumer. We recommend products that we would use on our own homes and manufacturers that have proven to stand behind their goods.