Furnace Air Flow Direction Diagram

The term air flow configuration describes the physical orientation of a furnace relative to the direction in which heated air leaves the furnace and enters the ductwork.

Furnace air flow direction diagram.

Upflow downflow and horizontal. 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. On your new air filter find the arrow that indicates the proper air flow direction. The most common terms used to describe the air flow configuration are.

Remove the old air filter from your furnace. Which way does furnace air flow. That arrow must always face toward the furnace and away from the return duct that carries the air in need of heating or cooling. The right way to insert a furnace air filter.

Forced air furnaces recirculate air through a home. Pushing air cool or heated in and pulling spent air back in for another cycle. Now you never need worry about the furnace filter direction again. You need to determine the proper direction in order to obtain optimum filtering and have the longest service life possible for your filter.

The first step to an effectively filtered heating ventilation and air conditioning system is the correct insertion of a furnace filter. This tends to confuse everyone more than anything else.