HVAC Troubleshooting Guide (PDF)

About The Author
John Tomczyk is co-author of the book Refrigeration and Air Conditioning Technology published by Delmar, Cengage Learning. He is author of the book Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems   published by ESCO Press . 
He is also author of an EPA-approved Technician Certification Program Manual   and a Universal 
R- 410A Safety and Retrofitting Training Manual. He also is a monthly columnist for Air Conditioning, Heating and Refrigeration News magazine. Tomczyk has 28 years of teaching experience at Ferris State University in Big Rapids, Mich., along with many years of HVACR service experience. To order the book Refrigeration and Air Conditioning Technology, call (800) 648-7450. Tomczyk can be reached an be reachedby email at tomczykjohn@gmail.com.

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