Which way does the air filter go?

What happens if air filter is backwards?

By installing your filter backwards, air will have a harder time flowing through the filter and your air handler will have to work harder to make up for the loss of airflow. This could lead to higher utility bills and possibly damage your furnace or air conditioner.

Which way should the arrow on an air filter face?

Air filters have arrows printed on the sides of them that show you which way they are supposed to be installed. These arrows should be pointing in the direction that air flows through your system, which is away from the supply ducts and (typically) toward the blower.

How do you install a Filtrete air filter?

How do I know which way the airflow is on my furnace?

If you are looking at a furnace filter, find the arrow that indicates the proper air flow direction. That arrow must always face toward the furnace and away from the return duct that carries the air in need of heating or cooling.

Does the arrow go up or down on an air filter?

The arrow on the filter should always point toward the furnace. The furnace or the filter air box most likely will contain the correct filter measurements for replacement filters or just check the filter itself.

What is the direction of air flow?

Air always flows from the high pressure region to the low pressure region. A warmer place is usually a low pressure region while a colder place is a high pressure region. Thus the direction of air is from warmer to colder region.

Which way does the arrow on a furnace filter point?

The arrow points in the direction of the airflow. The point should go toward the inside of the furnace compartment. If the filter goes inside the ductwork, it should point toward the air handler or the furnace.