Heating & Cooling

How to Replace a Furnace Filter

A clean filter protects the system and improves airflow. Filter changes are a routine resident responsibility.

Tools & supplies

1
Turn the thermostat or system off before you begin.
2
Locate the filter slot at the furnace or the return-air vent.
3
Slide out the old filter and note the size printed on its frame.
4
Insert the correctly sized filter with the airflow arrow pointing toward the furnace.
5
Turn the system back on. Submit a request if you cannot locate or fit the filter.

Let us know so we can point you to the right next step.