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John Tomczyk

John Tomczyk has worked in refrigeration, heating, and air-conditioning service; project engineering; and technical writing consultation for both the academic and industrial fields for numerous years -- enabling him to bring a wealth of experience to this text. He currently serves as Professor of HVAC/R at Ferris State University in Big Rapids, Michigan. In addition, he owns Technical Writing Services and is co-owner of Delta T Solutions, Inc.

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