I'm not going to ask a lot of stupid questions here, so overlook my lack of knowledge...
I am changing the air filter upstairs, and I don't remember which direction it was pointing.
The new filter has an arrow that says "Air flow". Well air naturally comes DOWN from the vents, so I'm assuming the arrow should be pointing down when I put it in.
However, the filter is sucked upward when the A/C is running because the unit is above the ceiling in the attic. So that would make me think the air flow is up for the filter. So then I thought the arrow should be pointing UP.
Which is correct?
Thanks
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