Furnace Air Flow Direction Diagram

The most common terms used to describe the air flow configuration are.

Furnace air flow direction diagram.

Pushing air cool or heated in and pulling spent air back in for another cycle. This tends to confuse everyone more than anything else. Which way does furnace air flow. The first step to an effectively filtered heating ventilation and air conditioning system is the correct insertion of a furnace filter.

Upflow downflow and horizontal. The right way to insert a furnace air filter. Furnace and air conditioner filters are important devices for helping to remove dust and pollutants from the air in your home and are often designed to have air flow through them in a particular direction. Forced air furnaces recirculate air through a home.

On your new air filter find the arrow that indicates the proper air flow direction. 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. Remove the old air filter from your furnace. That arrow must always face toward the furnace and away from the return duct that carries the air in need of heating or cooling.

You need to determine the proper direction in order to obtain optimum filtering and have the longest service life possible for your filter. Now you never need worry about the furnace filter direction again.