Air Flow is a Heating, Ventilating, and Air Conditioning (HVAC) manufacturer’s representative serving Wisconsin and the Upper Peninsula of Michigan. Founded in 1973 by Allen Gelin and Neil Drees, Air Flow has earned its reputation among its customers in the commercial, industrial, and institutional marketplace. Air Flow has over 35 employees and operates out of a 54,000 square foot facility in Milwaukee, Wisconsin. We represent over 50 manufacturers of HVAC equipment and thousands of individual products.