Cleaning or replacing air conditioner filters is essential for optimal performance and energy efficiency. A clogged filter can significantly impede airflow, making the unit work harder and leading to increased energy bills and wear on the system. According to the U.S. Department of Energy, maintaining clean filters can reduce energy consumption by 5-15%. For central air systems, filters should be changed every 60 to 90 days, while window units or ductless mini splits require monthly checks. The cleaning process involves turning off the unit, removing the filter, vacuuming dust, rinsing with warm water, and ensuring it is completely dry before reinstallation. Regular maintenance not only enhances cooling performance but also prevents issues like mold growth and ice buildup on evaporator coils. Therefore, taking the time to maintain your AC filter can lead to significant improvements in comfort and efficiency.