Michigan Air Products enjoyed its first day of day of business on August 1, 1973 when the new partners Donald Kutil (Kutil Company) and Thomas Joliat (Joliat & Barnaby Associates) decided after many years of battle to combine their efforts and to stop competing with each other.  Tom brought the Mammoth line of packaged mechanical rooftop equipment to the mix whereas Don added Greenheck fans as well as several other manufacturers of air distribution components. These were the days before copiers, faxes and computers so communication was rather difficult, somewhat expensive and always slow.  

Initially Michigan Air Products worked out of a small office in Birmingham before expansion required them to purchase, remodel and relocate to a former shop building in Royal Oak.  To more thoroughly blanket their Michigan territory they established sales offices in Saginaw and Grand Rapids and manned them with local sales staffs.  In 1984 Tom's son Paul (Johnson Controls) joined the company and later in 1985 Don's son Jim (Gary Shreve Associates) came aboard.  Both were graduates of Michigan State University and worked within the industry prior to joining the firm. 

Tom & Don, in their infinite wisdom, sold the company to sons Paul and Jim in 1987.  This sale allowed for a smooth and orderly transition with bankers, lawyers, accountants and an ever expanding customer base.  The fathers remained extremely active in the business, both in a sales capacity. 

In 1990 Michigan Air purchased of an adjacent building in Royal Oak and subsequent construction joining the two buildings allowed MAP to expand their operation to include warehousing of fans, roof curbs, air diffusers and other commonly used ventilation components.  This expansion allowed the firm to double their size to approximately 9100 square feet.

In 1996 it was decided that additional space was required so Paul and Jim researched the options and decided to construct a new facility on vacant land in Troy - a mile or so from the Royal Oak facility.  Their current headquarters, consisting of 28,000 square feet of office and warehouse was opened in July, 1997 and remains their home today.  Michigan Air Products purchased a newer 6100 square foot facility in Wyoming, MI in 2006 to accommodate the expanding Grand Rapids operation, and in late 2007 the Saginaw office relocated to a new 2500 square foot facility.

Today, Michigan Air Products continues to serve its customer base throughout the market territory of Michigan and Northern Ohio.  With over fifty dedicated employees including six registered professional engineers, the company prides itself on providing engineered HVAC solutions for its customers, the highest quality products, and unparallel customer service.

R. L. Deppmann
continues into our 82nd year

Raymond L. Deppmann who remained as president and majority stockholder until December 7, 1971 and continued to be active until 1974 founded the R.L. DEPPMANN COMPANY in 1927. From the inception of the Company, Ray insisted on 100% customer service and continual training for staff and customers.  The Company began as a distributor of damper motors for boilers in Detroit.  In 1929 Deppmann became the first stocking representative of Bell and Gossett pumps.  The Company grew to include Barber Colman Controls, which after World War 2, was the largest line RLD represented.  The Grand Rapids branch was started in 1945 and the Saginaw office was opened in 1956. The Cleveland branch was added in 2001. 

In 1971 ten key employees purchased the Company.  The officers at that time were: Zaven Margossian, Arthur Turner, Robert Whymer, and Andrew Sturgeon. Ray voluntarily stopped representing Barber Colman in the 1960's. This new generation of management concentrated on Bell and Gossett hydronic specialties and pumps as the flagship line.  During the time from 1971 to 1991, these gentlemen shaped the Company into the large and trusted hydronic representative.

In 1991, the third management team was elected to move the Company into the future.  Product lines such as Dristeem, Laars, and Aerco were added. 

R.L. Deppmann Company is 100% employee owned and the current officers are, Norman E. Hall serving as President, Bob Van Goor as VP of Sales, Joe Smolinski, is Treasurer and VP of new product development, and Chris Lieder is Secretary.

Our team includes Bob Schmitt leading operations and finance, Chip Bidigare leading the Distribution segment, Jon Fischer leading New Construction segment, Dave Shugars leading Engineering/End User segment, and Dave Taptich leading the customer service.

We serve the industry using our core values of; To Teach, Go Beyond Requirements, and Integrity. Our goals include a broad range of training activities to help our customers make better decisions in their system designs.

Currently we have multiple employees involved at a chapter level leadership role in 3 local chapters and one member involved in a leadership role at a Society level. We are proud of our three LEED^® AP engineers on staff and look forward to adding to this history in the future.