AIR HANDLER / EVAPORATOR COIL
Uses the refrigerant from the compressor (1) to cool the warm air that came from the blower motor (2). Now the cooled air comes out of a supply (B) and into your home
OUTDOOR COILS AND FAN
Expels heat from the refrigerant that warmed up in the evaporator coil (3) to repeat the cycle all over again
Pulls hot air from inside your home from a return (A) and sends it to the evaporator coil (3)
Cold air from the evaporator coil (3) comes out here.
Warm air from inside the house enters here and heads to the blower motor (2)
With help from the compressor, it pumps cool refrigerant fluid to the air handler/evaporator coil (3) and back in a continuous loop