Here is another portable air filtration system that removes airborne particles, including mold, pet dander, dust, and pollen. The OdorStop OS500 HEPA Air Scrubber captures debris as small as 0.3 microns. It has a 3 stage filtration system, 1/3HP motor, and 30′ power cord.
The device has a filter change indicator light to let you know when you need to make a change. Costs under $700 at this time.