Excerpt from disc 2 of "Understanding HVAC for Non-Technical People", a special training package taught by Jack Rise and available from ACCA at www.acca.org/store/product.php?pid=322. Provides a basic understanding of HVAC systems for non-technical people who would like to know more about how central heating and cooling systems work. Ideal for HVAC business employees such as dispatchers, salespeople, customer service, and other office staff.