HVAC Works

The ventilation portion of your HVAC system is made up of return and supply vents (also sometimes called registers), ductwork, filters, and a circulating fan. The circulating fan pulls air from inside your home through

This system, known as a forced air system, is the basis for the heating and cooling of your home. Before going into detail regarding the actual heating and cooling processes, however, a very brief physics lesson is in order.