Principles of Heating, Ventilating, and Air Conditioning is a textbook based on the 2013 ASHRAE Handbook - Fundamentals. It contains the most current ASHRAE procedures and definitive, yet easy to understand, treatment of building HVAC systems, from basic principles through design and operation. It is suitable both as a textbook and as a reference book for undergraduate engineering courses in the field of air conditioning, heating, and ventilation; for similar courses at technical and vocational schools; for continuing education and refresher short courses for engineers; and for adult education courses for professionals other than engineers, especially when combined with ASHRAE Handbook - Fundamentals.