How often should air filters in HVAC systems typically be changed?

Air filters in HVAC systems should typically be changed every 1 to 3 months. This frequency helps maintain optimal airflow and efficiency within the system. Regular changes prevent the buildup of dust, allergens, and other particles that can clog the filter, leading to reduced system performance and increased energy consumption.

Changing filters according to this schedule ensures that the HVAC system operates effectively, providing better air quality and comfort. Additionally, it helps extend the lifespan of the equipment by preventing stress and wear caused by dirty filters. Although factors such as the type of filter, the environment, and the usage patterns may influence the exact timing, a 1 to 3-month interval is a widely accepted standard for residential systems.