Chapter 3

Heating,

Ventilating, and

Air Conditioning

Systems

Overview

Heating, ventilation, and air conditioning (HVAC) systems maintain the cli-
mate in a building. In other words, HVAC systems control the temperature,
humidity, air flow, and the overall air quality. A typical system brings in out-
side air, mixes it with air returned from or exiting the system, filters the air,
passes it through a heating or cooling coil to a required temperature, and
distributes the air to the various sections of a building.

©2010 Elsevier, Inc. All rights reserved.
Doi:10.1016/B978-1-85617-653-8.00003-X