What happens next?

How to clean a furnace filter
Turn off the furnace.
Never remove a furnace filter while the furnace is running. Make sure to switch the furnace off before you begin.

Select from the following. 1). If the furnace system is working properly, the filter will start in about 60 minutes. If it has not, turn off the electrical switch, and you will begin this task.; 2). There is usually a handle somewhere near the furnace that can be switched off. If you're unsure how to turn off your furnace, contact your landlord or the manufacturer.; 3). Turn on the furnace unit without removing the filter. Remove the filter plate from the gasket.; 4). Rinse your furnace filter with water. You can use a scrub brush for this, or you can submerge the filter in water before cleaning the engine.;
2).