How often should I clean the filters in my air conditioner?
As a general rule, you should clean your air conditioner filters within the indoor unit every two weeks. In more dusty or polluted environments you should clean your filters more regularly.
Cleaning your filters is the most important maintenance task you can do to care for your air conditioner.
Blocked filters can reduce a system's efficiency significantly. Replacing a blocked-up filter with a clean one can lower your air conditioner's energy consumption by anywhere from 5% to 15%.