If the filter is in the wall or ceiling, then the mesh should face the inside of the wall or ceiling.

Furnace filter air flow direction. When you have reason to doubt that the existing air filter was put in correctly. Step 2 examine the filter. Pushing air (cool or heated) in, and pulling spent air back in for another cycle.

If an air filter is installed in the wrong direction, air will have to pass through the filter via the less porous side. That direction is from the cold air to the hot air duct as the air. When the filter is dirty, the furnace efficiency drops because of less air flow.

The arrow and air flow direction to properly insert a new filter, look for the arrow! Remember, any heating or cooling system that uses a fan to distribute air is not only blowing air out, but always pulling air back towards it. In addition to clean air, filters also protect your hvac system from debris and dirt buildup.

When the filter is not. The arrows point in the direction of the airflow. Determine where on the furnace you can find the filter air box.

The air filter’s metal mesh should face the blower in the hvac unit. The right furnace filter direction allows the filter to effectively trap airborne particles while also reducing the slowdown of air flow through your furnace system. When you removed the air filter before checking to see what direction the arrow was pointing.

The arrow on your filter should always face the unit and away from the return air duct that. Furnace filters remove the airborne dirt particles from the air when the furnace is running. Position the airflow arrow so that it points in the direction the air is flowing.