About Us

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Since 1922

Design Air is a full-service heating, ventilation and air conditioning (HVAC) wholesale distributor serving all Wisconsin, upper Michigan, eastern Minnesota, and northern Illinois licensed HVAC contractors. Design Air empowers our customers through our services, programs, and unique relationships which enable them to achieve a competitive edge and run a successful business.


Our Customer Promise

As a recognized leader in HVAC design and distribution, Design Air wants to continually impress our business partners. Providing superior customer service is a unifying force throughout our diverse operations. Our knowledgeable professionals and HVAC designers in combination with industry and product training, reliable and economical products, and competitive pricing, and timely deliveries, we strive to be the wholesale distributor of choice for HVAC contractors and suppliers.