The latest changes in the ASHRAE literature are reflected in this new edition of the HVAC text. It includes expanded coverage of automatic control and moist air properties, and contains new data for floor slabs and underground walls and floors. Increased emphasis has been placed on the effects of barometric pressure. The text now covers energy calculation by the bin method, design of large hydronic systems with variable flow, and the energy grade line concept, and includes new data for duct fittings and compressor performance. The book uses a dual system of units.