Honeywell 50250 99.97% Pure HEPA Round Air Purifier
From Honeywell
True HEPA filter removes 99.97% of all airborne particlesfrom the air passing through the filter such as pollen, cat dander,household dust, tobacco some & mold spores
Amazon Sales Rank: #926 in Kitchen & Housewares Color: Ivory Brand: Honeywell Model: 50250 Released on: 2005-09-15 Number of items: 1 Dimensions: 19.57" h x 18.03" w x 18.03" l, 23.00 pounds
With a true HEPA filter that's easy to vacuum clean and still removes 99.97 percent of all particles that pass through it, Honeywell's Round Air Purifier is as user-friendly as it is efficient. Designed for larger rooms, the unit rids the air of pollen, cat dander, household dust, and mold spores. Plus, it filters out up to 99.4 percent of tiny particles like bacteria and germs for fewer cold and flu problems. Quiet and surprisingly compact, the unit ensures healthier lungs and tidier rooms without drowning out the conversation. A charcoal pre-filter removes smells from tobacco smoke, cooking, pets and plants. Warning lights show when HEPA Filter and Pre Filter require cleaning or changing.
Best Value Purifier In this review, I will first summarize the major points and focus the details afterward. This way you can stop reading when you get the level of details you need. The definitions of "HEPA" and "CADR" are placed at the end of this review. Please vote for this review if you like it :) I appreciate it. **Kimmer (another reviewer) has kindly uploaded a wonderful youtube video to demonstrate the noise level, title: "Honeywell Enviracare 50250 air purifier". Since your computer speaker will affect the demonstrated noise level, make sure you gauge the noise to Kimmer's voice.** Pros: Powerful, inexpensive, permanent HEPA filter, easy to maintain, 360 degree air intake and output, portable, accessible replacement parts, good support from Kaz, a 5 year limited warranty. Cons: Noisy, high power consumption, not stylish. Previously I owned the Honeywell HFD-130 Germicidal Tower HEPA Air Purifier with Permanent IFD Filter, but due to its ozone emission and my respiratory problem, I returned it back to HomeDepot. I got fully refunded and bought this Honeywell 50250N on the same day and loved it. I have a mild allergy. I sneeze and experience itchy eyes when I am outdoor, but stop when I am at home (where my purifier is). I recommend two important points when shopping for a purifier: (1) always examines the CADR number. It is a decent performance indicator, (2) always buys an air purifier adequate for your need. A 100 sq ft purifier will not work for a 1000 sq ft living space. Honeywell 50250N is a true HEPA filter purifier with a 250 CADR, which translates into a recommended 375 square feet usage space. Currently, this purifier is being sold at ~$160. It has been quoted as the only purifier 99.97% of airborne particles that is 0.3 micrometer. The removal success rate is usually equal or higher for larger particles and for slightly smaller particles (down to ~0.01 micro), but performance drops drastically for much smaller particles. HEPA can effectively trap pollens, fine dust and smoke particles -- the major causes of allergy. "HEPA-type" and "HEPA-like" purifiers fall short of this requirement, and there is no strict guideline for their exact definitions. Historically, HEPA was a top-secret technology developed to filter radioactive aerosol, part of the Manhattan Project. HEPA is not designed to remove odors and VOC (volatile organic chemicals), since they are much smaller than the effective range of a HEPA filter. CADR (clean air delivery rate) is certified by the AHAM (Association of Home Appliance Manufacturers). CADR is expressed in units of cubic feet volume per minute. The suggested floor space is usually calculated based on a 8 foot ceiling and a 5 air change setting. For example, Honeywell 50250N produces 250 cubic feet of clean air per minute or 15000 cu ft per hour. Divides 15000 cu ft by a 8 ft ceiling and by a 5 air change equates to a recommended floor space of 375 sq ft. A shortcut is to multiple the CADR number by 1.5: e.g. 250 CADR X 1.5 = 375 sq ft. Although the recommended floor space value is easier to relate to, there is no legal guideline for the calculation. Neoair's most powerful purifier, Neoair Plus, has a suggested 600 sq ft floor space, much larger than that of Honeywell 50250N. In reality, Neoair Plus has a CADR
