The main job of the evaporator coil is to cool the refrigerant so that it can absorb the heat. ... The refrigerant then absorbs heat and flows to the outside unit where it goes through compression and pressurization to become a hot gas.

How does the evaporator work?

The evaporator works the opposite of the condenser, here refrigerant liquid is converted to gas, absorbing heat from the air in the compartment. ... This causes the refrigerant to absorb heat from the warm air and reach its low boiling point rapidly. The refrigerant then vaporizes, absorbing the maximum amount of heat.

How does an AC evaporator coil work?

As the air conditioner runs, the compressor pulls cold, low-pressure liquid refrigerant through the tubing in the evaporator coil. ... As the refrigerant flows, the blower fan draws hot room air over the evaporator coil. The refrigerant absorbs heat from the passing air and, as it does so, it warms up and evaporates.