Welcome to Design Air.

We are a full-service heating, ventilation and air conditioning (HVAC) wholesaler servicing clients throughout Wisconsin and Upper Michigan.

Recognized as a leader in HVAC design, Design Air is a major supplier of forced air and hydronic heating & cooling systems and HVAC supplies. We combine knowledgeable professionals, computer-assisted design (CAD), timely delivery, industry training, reliable products, and competitive pricing to give our customers an edge in the marketplace.

Kimberly, WI: 1-800-444-0101
Green Bay, WI: 1-800-444-1798
Iron Mountain, MI: 1-800-490-4904
Madison, WI: 1-888-535-5595
Milwaukee, WI: 1-800-569-3389
Wausau, WI: 1-888-363-4779
West Allis, WI: 1-800-494-4259

© Design Air - a division of U.S. Oil Company, Incorporated
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