View on LOZ Suggested Retail: $249.99. Westinghouse 1701 HEPA Air Purifier with Patented Medical Grade NCCO Technology for Home, Eliminates & Kills Bacteria and Viruses, Filters Dust, Pet Dander, Odor, Allergies, Smoke – Ideal for Medium to Large Rooms, Office, Kitchen, Bedroom. Pre-filter, True H13 HEPA filter combined with patented NCCO technology (Nano Confined Catalytic Oxidation) sanitizes your house and kills and removes harmful pollutants. It breaks down the harmful particles in the air into harmless compounds and is more effective than a charcoal filter. 4 stage, 300 square foot Westinghouse air purifiers sanitize 99.95% of virus and bacteria organisms in the home, bedroom, work place, and office. 300 square foot coverage good for medium to large rooms.. 7 CALENDAR DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.