Blower Assembly Fan Problems And Their Effects On Your Air Conditioning System


The blower assembly fan is responsible for not only pulling air into the air conditioning system, but also pushing the air through the system and into air-conditioned spaces. Any problem with the fan is therefore likely to affect the rate of airflow in the air conditioning system, something that will then have a negative impact on the ability of the air conditioner to make your home comfortable. The following are some of the most common problems that can affect this fan.

Dirty blades

Worn-out air filters are usually ineffective when it comes to preventing the entry of dirt into the air conditioning system. This usually allows for the accumulation of dust particles on the blades of the squirrel cage blower assembly fan. This is a problem since the continued accumulation of these particles sometimes changes the shape of the blades – makes them less depressed. The reduced cupping then reduces the ability of the blades to move air when the fan is on. This then leads to restricted airflow within the air conditioning system.

Bent blades

Wear and tear sometimes eats into the shaft on which the fan rotates. The bolts and screws that keep the fan in place can also loosen. When either of these things happen, the blades of the fan may end up knocking on the fan's housing, something that may then cause the blades to bend. The bending may also result from debris entering the blower assembly unit.

Bent blades not only produce noise, but also have difficulty rotating and moving air.

Failing motor

The motor is what rotates the fan. If the motor overheats, or if its bearings get blown out, it won't be able to turn the fan as fast as it should. As a result, the ability of the air conditioner to suck in air into its system will be affected. This will then cause reduced warm air availability in the evaporator coil area.

Reduced airflow and air conditioning efficiency

Since the fan's main function is to push air through an air conditioning system, any problems that limits its operations usually causes restricted airflow in the system. This is a problem because it not only means that there will be less cooled air to be dumped into a home, but also can also cause evaporator coil icing. The ice layer that forms on the evaporator coil then reduces the effectiveness of the heat exchange process that happens in the area, something that then reduces the ability of the air conditioner to cool air. This leads to an increase in the energy that the system uses since it has to work longer to make your home comfortable.

To prevent dirt-caused problems, regularly cleaning your air filters is recommended. Replacing any defective parts such as an overheating motor or worn-out bearings is something that you should also consider if you want to restore your system's efficiency. 

For AC repair, navigate to this website or do an online search. 


22 July 2016