How often should I replace my furnace filter?

There is no single answer for this question because it depends on the style of filter used, the frequency in which your system operates, the filter type (MERV rating) season, pets, and geographic location.  In general we recommend replacing 1″ filters every 1-3 months, or 4″ media filters every 3-6 months.

For more information contact Pharo Heating and we’ll help you determine your maintenance schedule.