The answer to 'how to clean air filter' is to regularly clean or replace your HVAC air filter to maintain optimal airflow and efficiency. Dirty air filters can reduce your system's performance, increase energy costs, and even lead to more frequent breakdowns.
To clean your air filter, first locate the filter, which is typically found in the return air duct or inside the air handler unit. Carefully remove the filter and inspect it. If it's heavily coated with dust and debris, it's time to clean or replace it. You can vacuum the filter to remove loose particles, or rinse it with clean water if it's washable. Allow the filter to fully dry before reinstalling it.