For courses in Basic Refrigeration, Commercial Refrigeration, Residential Air Conditioning, Commercial Air Conditioning. Warm Air Heating, Hydronic Heating, HVAC Control Systems, and Servicing HVAC Systems. Suitable for a full range of courses, this text covers information essential for all the courses outlined in the ARI Curriculum Guide for training entry-level heating, ventilating, air conditioning, and refrigeration (HVACR) technicians. Exceptionally comprehensive, authoritative, up-to-date, and well-illustrated in full color, it focuses on accepted and expected industry practices applicable to a wide variety of HVACR jobs.