Lowe's Home Improvement
FREE PARCEL SHIPPING on Qualifying Orders

Change a Furnace Filter

Learn how to locate and change your furnace filter.


Find and Change the Filter

A clean air filter improves air quality during both winter and summer when heat and air conditioning are in regular use. Proper size is important to fit your HVAC unit and for maximum efficiency.

At the bottom of the furnace, you’ll find access to the filter housing. Note the arrow on the filter frame that shows the correct air flow direction. Remove the old filter and insert the new one. It’s that simple.