The filters are the core of every air-con unit, as it is where air passes through and circulates through the system. At the same time, dirt also passes through the filter with the airflow, and when passed through the evaporator coil, will affect heat absorption. Your dirt filters will disrupt the normal flow of air, resulting in reduced efficiency.


  • Replace or clean your filters at regular intervals, preferably every month or two
  • A unit in constant use may require more attention paid to its filters, or if you have fur-bearing pets in the house.