Welcome to Koesterer Heating & Cooling!

Whether your home or office is too cold or too hot, Koesterer Heating & Cooling offers the heating, cooling and HVAC services to get you back in your comfort zone quickly and affordably. Koesterer Heating & Cooling has been serving commercial and residential customers throughout the Granite City, IL, area with superior products and professional, ethical service.

Over the years heating and cooling manufacturers have continued to improve their products and Koesterer Heating & Cooling has kept pace by continually working to offer our customers the most effective, energy efficient HVAC products available.

You don’t have to melt in the summer and freeze in the winter when a simple maintenance call from Koesterer Heating & Cooling could solve the problem. Most people fail to follow the maintenance regimens recommended by their system’s manufacturer.

Heating And Air Conditioning Contractors

For most of us we simply don’t give our heating and AC systems a thought until they fail to work properly. Even simple maintenance procedures like cleaning and replacing filters often go undone. The short term effects of such neglect can be poor performance. The long term effects, however, can be a significantly shortened life for your heating and air conditioning unit.

Koesterer Heating & Cooling recommends bi-annual check ups of your entire system to ensure you get the maximum performance and life out of your system.

Call Koesterer Heating & Cooling today at (618) 451-7500 to schedule an inspection of your heating and air conditioning system and ask about our maintenance agreements.