One use case we're facing is dealing with the negative pressure created by exhaust fans and an exhaust-only air conditioner. Acting together they pull air in fr

One use case we're facing is dealing with the negative pressure created by exhaust fans and an exhaust-only air conditioner. Acting together they pull air in from the outside. I was hoping there'd be some means to have some filter media handling that intake air thriugh a controlled portal so we can still exchange air. Afterall even with multiple circulations filtered or otherwise we still need some fresh air for humidity, oxygen, and stuffiness sake. You make a good point about the house being leaky in the end though. It's a real effort to have a completely sealed house for sure, companies specialize in that work. We bought three Honeywell air filters last year running continuously in the meantime.