If the air flows to the right, the air should point to the right.

Furnace air filter direction. Your new air filter should have an arrow on it that indicates the right airflow. After removing the top and then the bottom doors, you must replace them in. A furnace filter has one side that allows it to “breath” fresh air through, while the other side traps dust and particles from the air.

If you inspect your new air filter, you may see an arrow that says, “air flow”. The arrow must always face toward the furnace and away from the return duct. Ever wonder which way the arrow should point on your furnace air filter?find out right here:

Remember, any heating or cooling system that uses a fan to distr. The direction of the air flow is from the return air to the supply side. Assuming your unit is outside or in your attic, you want the arrow to face the unit.

Before installing your new filter, locate the arrow that indicates airflow. Find the ducts by standing in front of the furnace and then pull the old filter out to discard it. Remove the doors of the furnace.

It means the arrow faces the unit, or in other words, facing inside the space you’re putting it into. The air is pulled into the ducts from the house through what is referred to as a “return.” the air then passes through the. When you have reason to doubt that the existing air filter was put in correctly.

Furnace filter air flow direction. Pull the old filter out and discard it. Most air filters have an arrow printed on their side that indicates the direction of airflow.