2024-05-21 00:58 UTC
@KayOhtie@blimps.xyz Pulling air in through the filters and out through the fan is the proper orientation.
Otherwise, it pulls dust & debris into the fan before the filters which is bad for its motor. This also creates pressure within the filter box which stresses them and the tape instead of pulling it all tighter. With the fan blowing directly at strong resistance, that backpressure causes more leakage back up through the fan housing. Finally, it doesn't mix the room air as well as blowing upward does.
Replies (1)
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@Texan_Reverend@kind.social 2024-05-21 01:04
@KayOhtie@blimps.xyz The majority of air filters in all applications put the filter before the fan. This is true in car engines, in residential HVAC systems, stove exhaust hoods, etc. It's generally best to protect the fan by pulling through the filter first. This also allows the output of the fan to maintain the desired output flow characteristics instead of being made very turbulent and disorganized by blowing through the filters.