How often should air filters be checked in an HVAC system?

Checking air filters in an HVAC system every season is essential for maintaining efficient operation and air quality. Over time, filters can become clogged with dust, dirt, and debris, which can restrict airflow and force the system to work harder, leading to increased energy consumption and potential mechanical issues. Regularly inspecting filters, at least once per season (typically at the beginning of heating and cooling seasons), ensures that they are clean and functioning properly. This proactive maintenance helps to prevent larger problems down the line and can improve the longevity and performance of the HVAC system. It also contributes to better indoor air quality, as clean filters are vital for trapping various pollutants present in the air.