How often should I change my furnace filter?
If you are using a regular throw away filter we suggest you change it out every 3 months. Should you have a permanent filter we suggest you wash it every 3 months. Should you live in an area that is prone to dust and dirt, i.e.; next to, or near a construction site, in a rural environment where there are open fields, etc., you may want to change your furnace filter more frequently.