How do you know which way the air flow is to install the filter?

Question

I have a Ruud furnace and don't know how to install my purafilter-which way should the arrow go? Up or facing down?

Answer 1

Put it in the way the arrow is pointed.......It should be pointing down..

Answer 2

The device you are putting the filter into is called the air handler.  The air handler sucks air into it, therefore the arrows should point towards the air handler.

Answer 3

Pull the old filter out and stick a piece of paper or something in where the filter was while the unit is running.

See which way the air is pulling then you will know which way to place the new filter arrow.

Just dont let go of the piece of paper,lol.

Answer 4

The arrows should point in the direction of the air flow. If air is drawn through the filter then the arrows should point towards the housing the filter fits into. In most cases the would be up or inward.