How often should indoor air filters be changed?

Changing indoor air filters every 1 to 3 months, depending on usage, is the correct approach to maintaining air quality and ensuring the heating, ventilation, and air conditioning (HVAC) system operates efficiently. Filters trap dust, allergens, and other particles, preventing them from circulating throughout the space.

If the filters are used in a home with pets, or during high-use seasons, they may become clogged more quickly and require more frequent changes. Conversely, in environments that don't see heavy usage or where air quality issues are minimal, changing the filters every three months may suffice. Regular monitoring is essential to determine the actual condition of the filter. By adhering to this recommendation, one can maintain optimal airflow and improve the efficiency of the HVAC system, ultimately reducing energy costs and extending the lifespan of the equipment.