How to change a furnace filter

This video demonstrates how to change a furnace filter. From the people who brought you the Dummies instructional book series, brings you the same non-intimidating guides in video form. Watch this video tutorial to learn how to change a furnace filter, For Dummies.

A clean furnace filter traps dirt and allergens and makes your furnace run more efficiently — and last longer. This video shows you how to remove the furnace door panel, find the filter, and replace it with a new one. Replace furnace filters every month for best results.