The most important maintenance task that will ensure the efficiency of your air conditioner is to routinely replace or clean its filters. Clogged, dirty filters block normal airflow and reduce a system's efficiency significantly. With normal airflow obstructed, air that bypasses the filter may carry dirt directly into the evaporator coil and impair the coil's heat-absorbing capacity and blocking it over time. Replacing a dirty, clogged filter with a clean one can lower your air conditioner's energy consumption by 5% to 15%. Reduced air flow from dirty filters is a primary contributing factor to Airconditioning equipment breakdown, including fans and compressors
For central air conditioners, filters are generally located somewhere along the return duct's length. Common filter locations are in walls, ceilings, furnaces, or in the air conditioner itself. Room air conditioners have a filter mounted in the grill that faces into the room. Some types of filters are reusable; others must be replaced. They are available in a variety of types and efficiencies.
It is of paramount importance to remove bacteria from the filters when cleaning