Woot offers Hunter HP670 True HEPA Digital Tall Tower Air Purifier  for $43.99 (orig. $199.99) + free shipping with Prime.

Product Description:

mprove your indoor air quality in style with the Hunter HP670 True HEPA Air Purifier. Available in four color options, this air purifier is guaranteed to clean your air all while complimenting the décor.
This large tower air purifier features True HEPA filtration and EcoSilver® pre-filter to rid the air of dust, pet dander, hair, mold spores, bacteria, and viruses.

• Silver nanoparticles in the EcoSilver® pre-filter prevent the growth of microorganisms on the filter, including bacteria and viruses
• Coconut carbon in the pre-filter neutralizes harmful VOCs (volatile organic compounds) and household odors from cooking, cleaning, smoking, and pets
• True HEPA filter removes up to 99.97% of airborne particles as small as 0.3 microns including smoke, dust, pollen, pet hair and dander, mold spores, and dust mite debris
• ENERGY STAR rated for lower energy consumption
• 360-degree air intake
• Soft-touch digital control panel 
• 3 fan speeds so you get the cleaning power you want when you want it
• Sleep mode with whisper-quiet operation for uninterrupted sleep
• Timer with 2, 4, and 8-hour intervals
• Filter replacement indicator to remind you when it's time to change the filters
• Optional LED accent light for ambiance or nightlight