Change Furnace Filter In Attic

Access the attic furnace.

Change furnace filter in attic.

Changing a home furnace filter regularly is the fastest and easiest way to make sure your furnace is running smoothly and efficiently as well as to help purify the air in your home. Check the filter monthly to see when it needs to be replaced. Walk specifically on the floor joists to prevent damage to the ceiling below if. Depending on your lifestyle and the type of.

The filter may be positioned horizontally or vertically depending on the orientation of the air handler in the indoor unit. Dispose of it and replace it with a new filter of the same size when it gets dirty. Fit in the new filter by following the direction of arrows printed on the filter see image below. The arrows indicate that air is being pulled into the register air handler so make sure the arrows point into the system not towards the house.

How to maintain an attic furnace. Turn off the furnace s power at the circuit breaker on the main electrical panel. The general rule is to change a furnace filter usually located behind a return air vent or in a slot on the furnace itself at least once every 90 days. To determine if it s too dirty remove the filter and hold it up to the light.

In some cases especially on older models the filter may be found inside the blower cabinet. Wipe down the area around the slot or filter area with a cloth to remove dust. Apply a non contact circuit tester to the furnace to verify. Look for a filter cabinet along the sides top or bottom of the blower cabinet.

Look for a filter slot right where the return plenum contacts the blower fan assembly marked as air filter slot and yellow arrow in my photo.