True HEPA Air Purifier With Carbon for Your Furnace

Hospital-grade HEPA cannot go in a furnace filter slot: the media is too dense, and your furnace could not pull air through it. This is the way around that: a self-powered unit on a bypass loop off your return duct, filtering the whole house at 99.97% at 0.3 microns, with a carbon stage for the smells HEPA cannot catch. Pre-filter, carbon, and true HEPA in one cabinet. 99.97% at 0.3 microns, 45.2 sq ft of HEPA media. Its own blower: no load on your furnace.