A cabin air filter whose pores are blocked can cause a strain on the AC system. Apart from resulting in increased energy consumption, the strain can lead to damage of the motor due to overloads. This would especially happen when you have to increase the airflow by increasing the speed of the AC system blower.

Does cabin air filter affect air conditioner?

While a soiled cabin air filter can affect the AC system, a dirty engine air filter can cause engine performance problems. ... Replacing an old engine air filter can go a long way towards increasing the vehicle's efficiency.

Can a dirty air filter cause AC not to cool?

As a result of the buildup, a dirty filter will also cause poor cold airflow in your air conditioning system. That cold air will be trapped inside your air conditioner, causing ice to form on its coils. Once that happens, your air conditioner will freeze up and become inoperable.