How often should gas furnace filters be changed?

Changing gas furnace filters every 1 to 3 months is recommended because it helps maintain optimal airflow and efficiency of the heating system. Filters play a crucial role in trapping dust, debris, and other airborne particles, which can accumulate and restrict airflow if not addressed regularly. Allowing filters to become clogged can lead to reduced heating efficiency, increased energy costs, and potential damage to the furnace over time.

In environments with higher dust levels or if pets are present, changing the filters more frequently, such as every month, may be beneficial. However, the general guideline of every 1 to 3 months strikes a good balance for most situations, ensuring proper air quality and furnace performance without requiring excessive maintenance. Regularly scheduled filter changes contribute to a longer lifespan for the furnace and improved indoor air quality.