Filtering air coming in via house windows
I have allergies. Not good for a guy who likes to do outdoor activities. Not much I can do when hiking or bike riding other than using a face mask. But once we are back inside AI chilling out, we run the A/C to cool off and also minimize outside airborne allergens from coming in. But there are many days in fall or spring when A/C is not necessary if we can open a few windows. Unfortunately, spring & fall is when my allergies kick in (for 2-3 weeks each season). While shopping for stick house filters, I stumbled into much narrower filters. I have not noticed these before. But then again, we didn't have the AI six months ago either. So, I decided to try them out. They work nicely, the 12"x24"x1" is a good size to cover 1 of the flip-out windows. If you open more windows, obviously you need more than 1.
When I tested out the 1st one, AI was INSIDE my garage for the entire 2 week testing. My garage, compared to the average garage, is very clean and doors are only opened to ingress/egress. But check out the dirt it captures in just 2 weeks. Yuck, pretty dirty for being inside a completely closed garage and just 1 AI window open.
Since this was just a test, I did not buy the best 3M Filter either. Will get the better ones now for permanent daily use. This may be something to consider for those doing long term storage with vent fan on and flip-outs open, especially if on outdoor storage lot. Or even boondockers may benefit from it. For me, minimizing dust, cleaning, and allergens was the big benefit.