The answer to 'how to clean air filter' is to regularly clean or replace your HVAC air filter to keep your system running efficiently. Air filters trap dust, dirt, and other airborne particles, and over time they can become clogged, reducing airflow and making your HVAC system work harder.
To clean the air filter, first locate the filter, which is typically found in the return air duct or at the air handler unit. Remove the filter and gently vacuum or wipe it clean with a soft cloth. If the filter is very dirty, you may need to rinse it with water. Allow the filter to fully dry before replacing it. It's generally recommended to clean or replace your air filter every 1-3 months, depending on the level of use and household activity.