About Koesterer HVAC | Trusted Family-Owned HVAC Company in Granite City IL
40+ Years of Heating & Cooling Experience
Local Commitment to Comfort & Efficiency
With years of experience under his belt, John Koesterer opened Koesterer Heating and Cooling on June 1, 1992.
Since then, Koesterer Heating & Cooling has delivered dependable HVAC service throughout Granite City IL and Madison County IL. As a family-owned HVAC company, we focus on quality craftsmanship and customer satisfaction. Our team handles heating, air conditioning, and ventilation systems using top HVAC brands and custom sheet-metal fabrication. With licensed HVAC professionals, we provide lasting comfort backed by integrity and experience.
Koesterer Heating & Cooling proudly partners with
American Standard, one of the most respected names in the
heating and air conditioning industry. According to the nation’s leading
consumer publications, American Standard products have been reviewed seven times—and ranked
#1 in reliability and customer satisfaction in every review. No other
HVAC brand can claim that record. Known for
innovation, performance, and comfort,
American Standard heating and cooling systems continue to set the standard for quality trusted by homeowners nationwide.
Expert HVAC Services In Illinois
Today, KHC has grown significantly from its humble beginnings and primarily serves all major metro east markets: Granite City, Collinsville, Edwardsville, Glen Carbon, Troy, as well as every community in between. Even though the company has grown significantly, the founding principles have stayed firmly intact.
We now provide CNC plasma cutting for sheet metal fabrication when creating ductwork.
Our Services Include:
- Air conditioning services
- Ductwork services
- Geothermal services
- Heating services
- HVAC services
- Sheet metal fabrication