Contents
How does 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.
Where are AC evaporator coils?
Inside the home, the evaporator coil, sometimes referred to as the cooling coil, is located on the air intake side of the fan coil or the outlet side of the furnace. Its job is to remove heat from indoor air so the blower fan can return cool, refreshing air to the home.
Can AC coils be repaired?
In order to replace the coil and fix your evaporator coil leak, a technician will need to recover the remaining refrigerant gas, and solder in a new coil after dismantling the air conditioner. A filter / drier must also be added or replaced to absorb moister and contaminants.
Is it normal for evaporator coils to be wet?
The evaporator coil also collects moisture from the air, which dehumidifies your home. Under normal conditions, the moisture from your home’s air would gather on the outside of your evaporator coil and drip down into a drain pan, which is located below the coil.
What does an evaporator coil do in an air conditioner?
Evaporator Coil. An evaporator coil is the part of an air conditioner or heat pump that absorbs the heat from the air in your house.
What happens when an evaporator coil gets dirty?
Over time your evaporator coils can (and will) get dirty. And even a thin layer of dirt can restrict how much the refrigerant can absorb heat from the air. So, dirty evaporator coils can lead to: Higher cooling bills Less cool air in your home Frozen evaporator coils
How does the expansion valve in an AC evaporator work?
The expansion valve plays a very important role, as it reduces the pressure of the refrigerant. During this process the liquid is cooled, which allows it to absorb the heat and thus cool the air. The blower fan draws hot air from your house over the evaporator coil. As the air passes over, the refrigerant within the copper tubing absorbs the heat.
What causes condensation to freeze on an evaporator coil?
Without adequate airflow blowing over the evaporator coil, the condensation on the coil will freeze because there isn’t enough heat to be absorbed. Clogged Air Filter – Air filters are designed to filter out the dust and debris from the air as it passes through your system.