To remove the filter from a wall-mounted LG air conditioner, first turn off the power at the circuit breaker. Locate the filter panel, typically found behind a sliding door or a removable cover on the side or bottom of the unit. Open the panel by sliding it outward or lifting it up. The filter is usually held in place by two or more tabs or screws. Gently pull the filter out or unscrew it, depending on the design. After removing the filter, clean it with soapy water or replace it with a new one, following the manufacturer’s recommendations. Close the panel and restore power before using the unit again.

Regular filter maintenance is critical for optimal performance and air quality. According to the U.S. Environmental Protection Agency (EPA), a dirty filter reduces airflow by up to 50%, increasing energy consumption and wear on the system. A 2021 study by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) found that replacing filters every 30–90 days can improve energy efficiency by 5–15%, saving households an average of $50–$100 annually. Additionally, clean filters trap 99% of airborne pollutants, including pollen, dust, and pet dander, improving indoor air quality. LG’s official guidelines emphasize that neglecting filter replacement can lead to a 20% drop in cooling capacity, as stated in their 2023 service manual. For maximum efficiency, users should check the filter monthly during high usage seasons and replace it as needed. This practice not only extends the appliance’s lifespan but also aligns with sustainability goals by reducing energy waste.