Filtered window fan?
I live in an area with not so great air quality and no AC. We have little air filters inside the rooms, but at night we have to let the cool (and dirty) air inside to cool down the house.
I'd like a solution to blow air in while also filtering it - but aside from one Amazon listing and makeshift solutions with zip ties, I haven't seen great options.
Any recommendations you have?
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Try something like this.
It’s a basic box fan with a HEPA furnace filter attached, but it’s all you need.
And those furnace filters can be found in ALLLL sorts of sizes, you don't just gotta go with a square one.
So, filter the air after it comes in, not in the process of blowing in the window?
Set it up at your window and do both.
Yes, you want to filter on the output side. Putting the filter on the input will put extra strain on the fan motor.
Why will it? Surely it should make no difference?
Filters do slow down air flow.
filters on the output side should still strain the fan motor, no?
No, static pressure against a pump (which technically a fan is) is much less stressful against the motor than limiting the supply is. It's easier for the fan to push against resistance than it is to pull air through resistance.