Comment by Der_Einzige

I now run a MERV 16 furnace filter (yes, my aprilair system explicitly supports it, no I will not hurt my furnace) for central air filtration alongside two box-fan filters (the easy slap on the back kind - I think I'm using something equivalent to MERV 13 on the back, can't go higher for the size) around the house and a quiet regular air-filter in our room.

All of my wives problems related to allergies or breathing have gone completely away. Guests comment at how good/clean our house smells. Stuff takes longer to mold when its left out. 10/10 would recommend.