I have 5 20 x 20 box fans running 24/7/365 with Merv 13 HEPA filters placed against the back (held on by the fans suction). The whole house has Merv 12 HEPA fil

I have 5 20 x 20 box fans running 24/7/365 with Merv 13 HEPA filters placed against the back (held on by the fans suction). The whole house has Merv 12 HEPA filtration through forced air system. The air in the house is incredibly clean, to the point where after working from home and not going out much for the last 1.5 years, I am finding that I'm way more sensitive to allergens outside. Otherwise there is almost zero dust, the house has no odor, and there is a nice hum that drowns out outside noise and makes sleeping very comfortable. Lasko now sells a fan specifically made for cleaning your air. https://www.lasko.com/products/air-flex-air-purifier-and-room-fan-ff305/ https://www.lasko.com/products/air-flex-air-purifier-and-roo...