The SHARP KC850U Plasmacluster® HEPA Air Purifier is an ideal air purifier for medium rooms and a humidifier for 250 sq. ft. rooms. With a 99.7% particle capture rate, the long life SHARP KC850U filter creates a clean and comfortable atmosphere in your home. Effective up to.1,230 sq ft at one air change per hour. Sharp KC-850U features 3-Speed Fan control with Manual and Automatic operating modes. Sharp KC850U whispers in operation and qualifies as a LibraryQuiet™ air purifier. Sharp KC-850U is ENERGY STAR® certified air purifier with Ultra Low energy consumption. Sharp KC-850U comes Fully assembled with All filters already pre-installed.
Price Advantage: KC-850U. The first difference you will probably notice is the price tag. Sharp's larger KC-860U is about one hundred dollars more than the slightly smaller KC-850U. That might not sound like a lot, but if you're on a budget and have a small space to purify/humidify we recommend considering the smaller unit.. The Sharp KC-850U has much weaker fan power for the price and can only clean a room of 254 square feet. The ACH of Sharp KC-850U is 2X to 4X. With the best air changes per hour rating, this air purifier can clean your room every 15 minutes. The CADR of Sharp KC-850U is 164 Dust/ 164 Smoke/ 174 Pollen (cfm).