Welcome to Air Design Incorporated, Michigan’s leading supplier of industrial and commercial HVAC equipment. Headquartered in Southfield, Michigan with a satellite office just outside of Grand Rapids, Air Design’s team is now able to service the entire lower peninsula of Michigan. Our Sales Engineers provide consultation, site surveys, engineering presentations and industry-leading service to our customers. Click on the “Manufacturers” tab above for a look at our product lineup In addition to our core business of providing special-order HVAC equipment, we also carry thousands of in-stock HVAC products in our new, spacious warehouse. Stop by to stock up before your next project or request to have materials delivered directly to your job site. In business for over 35 years, Air Design prides itself on the business relationships it builds and maintains. Our mission is to serve our customers in a professional and timely manner with the most cost-effective, energy-efficient quality products.