For those whose primary objective is to get effective relief from hay fever or other allergy and asthma triggers such as pollen, dust mites, pet dander, mold spores, or asbestos fibers even in very large areas, and also want some ability to remove light odors and normal household chemicals or gases, the H600 is an excellent option. It features a True HEPA filter with 40 square feet of surface area, able to trap 99.97% of particles as small as 0.3 microns, plus 2 pounds of a special type of activated carbon like they use in gas masks which can adsorb 60% of its own weight in airborne chemicals, in a unit with a powerful fan and motor which can do two full air exchanges an hour in areas up to 2000 square feet (which is the size of some entire offices or homes, and so which could easily do a huge living or rec. room or master bedroom).
Free shipping in Canada. Detailed product information: [H600 PDF]