Many aftermarket and performance filters use fabric rather than paper and are washable. I assume these cloth filters when new are probably not as good at filtering, but after they have gotten a bit dirty they should be just as good as any paper filter. Many folks like the K&N oiled filters, but they have consistently show to let a dangerous, for your engine, amounts of particulates through the filter.Be very sure that the filter is actually washable. That’s weird. Like washing a regular automotive air filter.
Thanks for the available links , I won't have to search long.4 kids and a big poodle and not a rug or carpet in the house. We don’t live in a dusty climate.
I use these for hvac filters. Being limited to 1” thick filters I feel that anything higher is just too restrictive. I use a washable 5$ scotchbrite pre filter. I can go about an entire cooling season on one filter. And they don’t see much use in the winter.
Nordic Pure 20x30x1 MERV 12 Pleated AC Furnace Air Filters 6 Pack Amazon product
We run two of these. They are very quite on low. I use wa washable window ac prefilter they have the charcoal filters too. I wash the hepa filters every time it tells me to change them. First filter lasted 4 years. We call them the fart detectors. On a real smokey reload they ramp up to high and can be loud. But most of the time they stay on low
Winix 5500-2 Air Purifier with True HEPA, PlasmaWave and Odor Reducing Washable AOC Carbon Filter Amazon product
You can spend a lot of money on filtration but this seems to work reasonably well for not a huge up front and consumable cost.