Trane COL31307 Coil Assembly With Drain Pan & Thermal Expansion Valve(TXV)

The Trane COL31307 is an Air-coil which is an essentialindoor unit used in split-air conditioner and heat pumps. It plays the role of the heat exchanger by moving heat from the inside to the outside of the building. This indoor coil takes heat from the warm air that is inside the building. When the refrigerant passes through the evaporator coil, it turns into low-pressure gas from low-pressure liquid and in the process removes heat. This is why the air felt cooler as it passed over the evaporator coil. The procedure above is a real process and it is better explained by the physics behind it. This outdoor coil releases the absorbed heat back into the environment. The refrigerant then evaporates by turning from high-pressure liquid into hot gas back to the evaporator again before it starts its journey around the system.