Bad air quality--finally taped a house filter on the A/C

Wildtoad, he's trying to mitigate the horrific air quality those of us in the west have been under for the last week. Wopachop, if I was out in the RV in this mess I would do the same thing. I would just go by the sound of the motor - if it's bogging too much then try something less restrictive. It's going to be a trade off, the more restriction the more potential stress on the motor but I would be trying to filter this lousy excuse for air too.