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New Commercial HVAC System Installations

Our Promise to you is to Perform the correct commercial Heating, Air Conditioning and Ventilation (HVAC) installation at a fair price.

When you need Commercial HVAC services, trust the experts at DOW Heating & Air Conditioning. Our technicians have the skills, expertise, and tools to install complete commercial HVAC systems usually in one or two days.

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When your DOW Heating & Air Conditioning installer arrives at your business they will explain what to expect during the installation process.  We service and repair complete systems from a variety of major manufacturers so you can trust us to perform a professional system installation.

We're not happy until you're happy.

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Serving the entire Metro East and Monroe and Randolph Counties

Baldwin    Belleville    Caseyville   Chester    Collinsville    Columbia   Coulterville    Dupo    East Carondelet    Ellis Grove    Evansville    

Fairmont City    Fairview Heights     Fayetteville    Floraville    Freeburg    Fults Hecker    Lebanon    Lenzburg    Maeystown    Marissa    Mascoutah   Menard    Millstadt    Modoc    New Athens    New Baden    O'Fallon  Paderborn    Percy    Prairie Du Rocher    Red Bud    Rockwood    Saint Libory    Sauget    Scott AFB    Shiloh    Smithton    Sparta   

St. Louis Metro Areas    St. Louis Metro East     Steeleville    Swansea    Tilden  Valmeyer    Walsh    Waterloo

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