Can we talk about cheap paint booth air filters? I wasted $200 on the wrong ones

I figured I'd save a few bucks and bought a bulk pack of filters off Amazon for my shop's booth. Stuck them in last Tuesday, and by Friday I was getting dust nibs all through a pearl white job on a 2022 F-150. The filters just didn't catch the fine stuff, they looked clean but the paint told the real story. I ended up having to wet sand and buff that whole truck which ate up about 6 hours of my Saturday. The cheap filters cost me 200 but the labor loss was way worse. Has anyone else run into junk filters that looked fine but failed on a real job?

3 comments

3 Comments

wood.eric1mo agoMost Upvoted

Did you try blowing through them to see if they actually blocked air or just laughed at your money?

west.richard1mo ago

Lol yeah @wood.eric you're totally right! I actually did that with a cheap set I got online and could blow right through them like they were nothing. Felt like such a waste of money honestly. The expensive ones I finally bought actually have some resistance when you try to blow through them. Still not sure it was worth triple the price though haha.

spencer_park261mo ago

Little correction there @wood.eric - blowing through them actually tests the mesh size more than the airflow. Even good ones let air through unless they're super fine. The real test is watching how much dust gets past them between cleanings, not the blow test. That trick works for checking if a filter is totally clogged and need replacing, but a new one should let some air through by design. Different mesh sizes catch different stuff too, so one set might block dust better while another lets more air flow.