Fundamentals of HVAC

Your HVAC is more than a single unit — it’s a system made up of multiple units and parts on the inside and outside of your home, that works together to meet your temperature, comfort and air quality needs all year long. The warm humid air, from the house is drawn across the evaporator coil and de-humidified, the latent heat is removed (dropping the temperature of the air) and supplied to the dwelling space.

An air conditioner's main function is to remove heat and humidity from within the home. It does this by using refrigerant that circulates between the indoor (evaporator) and outdoor (condenser) coils. The outdoor AC unit – or condenser - houses a fan motor, that draws the cooler outside air across high pressure/high temperature condenser coils, and a compressor, that pumps the refrigerant through the system to the indoor evaporator coil located in the attic, near the furnace.

The furnace has a heat source (flame), a blower and a heat exchanger. The blower motor has the function to draw cool air from inside the house across a heated combustion chamber and to supply the warm air into the house and draw back to the furnace cooler air from the dwelling until the thermostat set point is satisfied.

The refrigerant absorbs heat from inside your home, then transports that heat through the line sets and the outdoor coil, releasing the heat to the outside air.

Supply Air ducts and vents transport and deliver cold air from the evaporator coil throughout your house.