which way does air filter go in

Publish date: 2022-03-01

When a furnace filter is placed backwards, the fibers can’t do their job properly. This means your furnace has to work harder to generate the same air flow, resulting in increased energy costs. Particles are also allowed to build up irregularly, making the furnace working even harder to draw air.

Which side of AC filter goes up?

If your filter is on the ceiling, the arrow should face the ceiling. If your filter is on the wall, the arrow should face the wall.

Why do air filters have a direction?

This allows the filter to effectively trap airborne particles while also minimizing the slowdown of airflow through your system. 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.

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