Ever wonder what HVAC means? It is an acronym that stands for heating, ventilation, and air conditioning.
It also the most used term when it comes to keeping homes at a comfortable temperature.
In Austin, Texas, most HVAC systems are forced-air heating and cooling systems. This kind of system includes a heat pump, air conditioner, and furnace.
Components of an HVAC
A forced-air system typically has two components. First, an indoor air handler unit holds some parts of the cooling system and most parts associated with the furnace.
Both the central air conditioner and the heat pump use the outside condenser, a unit that contains the condensing coil, compressor, and a fan.
The V in HVAC means ventilation. The blower inside the air handler pulls the air over the heating and cooling parts, thoroughly conditioning your air, and then send it through the ductwork.
How All These Work
A central air conditioner and heat pumps use refrigerant to capture the heat in the indoor air.
On a regular cooling cycle, the compressor alters the refrigerant pressure that is chilling it. As it flows through the evaporator coil and at the same time, the blower sends air over the coil, removing the heat.
In the winter, the heat pump is reversing the refrigerant flow to produce warm air.
During the cooling cycle, warm refrigerant circulates through the condensing coil while the fan is pulling air through the coil to cool it.
The air returns to the compressor back to into the evaporator coil until it reaches the thermostat’s settings.
A gas furnace creates heat through a burner inside the air handler and an electronic or standing pilot that lights the fuel. Your home warms as the heat exchanger is adjacent to the burner. It heats up, and then the blower motor sends air over it. Warm air is now blowing through the ductwork.