Quoted:
Quoted: I just use the 3m pleated filters in my HVAC
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Does that work well?
I had thought about putting cheese cloth on the vents to see what I could get.
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Hell yes they work. They are about $10 and just replace the standard HVAC/Furnace filter. There are two kinds, the blue package ones, and the gold package ones. Get the gold packaged filters, they filter down to .02 microns I think it is.
In my old farmhouse, the air was really bad. Had a fieldstone basement, that was wet in the spring. Lots of dust and dirt. Three pets, etc. I had to replace the 3m filters every month they got so caked with junk.
Right now I live in an 8 year old duplex that is clean and in good shape. The 3M filter still makes a world of difference. I notice it most when I get up in the morning, my nose isn't stuffy and my eyes don't have eye boogers.
I bet you could pick up a couple, trim them to size, and put them over your HVAC vents with duct tape, and it would work.