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From left to right: Deanna Perry, ProTech Systems; John Conrad, The News Western Advertising Manager; and Kim Liszewsky, ProTech Systems.

With more than 500 pages of extensive information on such important topics as refrigeration systems, piping, ductwork, motors, compressors, fans, pumps and more, this "answer book" is one of the most complete HVAC/R professional references available.
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