This air cleaner must be rated best buy... Combining performance with affordability, this is the perfect unit for a bedroom or office. Quiet and efficient, the Alen 350 air purifier cleans rooms up to 800 square feet, though allergy sufferers will want one unit for every 400 sq feet to achieve at least 4 air changes per hour. In addition, the Alen air purifiers are supported by the industry best life time warranty program. With the Alen 350, you get HEPA filtration at a cost much lower than comparable models. Wall mountable, easy to maintain, with replacement filters that will not drain your wallet are just a few of the features that make this our most popular air purifier. A user had this to say: "It works well: The room with this product in it gets cleaned periodically, and we noticed a significant reduction in the amount of dust on the furniture, so I would say this filter is working well. Online sites rate this Air Purifier as removing over 95% of air borne particles in a controlled situation, making it comparable to $600+ models, and far superior to the products you see on those info-mercials." |
Here's another superb buy...
Noteworthy Features:
HEPA air purifier for rooms 450 square feet or less in size. 320 CADR rating. These air cleaners quietly and efficiently clean the air you breathe. The true HEPA filter cleans the air passing through it 4.8 times per hour or more depending on the unit and room size. Anyone who is concerned with their air quality or simply wants to keep a room fresh, will feel comfortable with the performance and technology built into a Whispure air purifier. The filter captures 99.97% of particles as small as 0.3 microns from air passing through the filter, capturing airborne allergens such as dust, pet dander, smoke, mold spores, pollen, and fabric fibers.
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Shhhh...Do you need a QUIET air cleaner? Here's the top-rated model in the ultra-quiet category...
This one is made for rooms or areas up to 679 sq. ft.. The blueair 601 is an
air purification system that features two-stage HEPASilent technology
that
captures 99.97-percent
of
0.1 micron
particles, including allergy-provoking pollen grains, dust mites,
mold spores, and pet dander particles. The unit is suitable for
individuals with allergies, asthma, and other respiratory
conditions -- but don't let that stop anyone just wanting to breathe
cleaner, more breathable air. Particles that a HEPA filter alone
might miss are captured with an electrostatic
charge. HEPASilent technology is able to move particles through an enclosed
ion chamber, which attaches a charge to the particle itself. Charged
particles stick more readily to the filter material -- this results
in higher overall filter efficiency. Since most electrostatic
air
cleaners
charge the filter media itself, the charge dissipates over time
and renders the filter less efficient. By constantly charging incoming
particles, instead of the filter, HEPASilent technology keeps on
working effectively......... Not only does the unit clean air with environmentally friendly filters, it’s HEPASilent filter technology also allows for extremely quiet operation. On the lowest setting, the unit emits no more sound than a desktop computer. With its HEPASilent filter technology, particles are trapped with both mechanical and electrostatic filters so that in combination, the two filters create a filter system through which air flows freely and the fan doesn't have to work so hard. The unit's design is also geared towards quiet operation with its noise-muffling steel housing. Not only quiet, but the air purifier is energy efficient as well, costing about the same amount to clean indoor air as it does to power a light bulb--15 watts on low to 95 watts on high. The air purifier operates efficiently, quietly, as well as inoffensively. Instead of discharging a windy stream of filtered air, the unit diffuses air gently through an area six times greater than the average air cleaner. Its SurroundAir system achieves peak performance without annoying drafts by drawing in dirty air from the sides and bottom, moving it through a less dense filter media, and releasing clean, filtered air from the sides and top. Operating on its lowest setting, the system produces virtually no noticeable draft, while still providing an exceptional air exchange rate. The air purifier features a sleek, contemporary, Swedish design and is easy to use and maintain. Simply plug it in, select the speed setting, and it is ready to go, with a bright blue power "on" light to show that it's working. The grilles and powder-coated steel exterior are easy to wipe clean, and when the filter needs to be replaced (twice yearly), just open the lid, lift out the old filters, and drop the new ones in. This quiet, efficient, easy-to-use air purifier measures 26 by 20 by 13 inches and carries a 10-year warranty. Description 1 Blueair is the system for people living with alergies, asthma or other respiratory conditions, or for anyone who wants cleaner, more breathable air. A revolutionairy combination of advanced filter media and an encapsulated ion particle charging chamber makes it possible for the Blueaur air purification system to achieve better results than either technology alone. Our patented HEPASilent filter technology is proven effective at capturing 99.97% of the tiniest 0.1 micron particles. The quietest unit in the industry, Blueair's low-density filter clean larger volumes of air more quietly than any other unit in the industry. Hence the name HEPASilent(r) a Blueair Exclusive. Bacteria-resistant filters, Blueair's filters are made of bacteria-resistant polypropylene. Because polypropylene is waterproof, the filters naturally reist contamination from bacteria, viruses and mold without chemical additives or washes. And the filters only need replacement every six months, a process that takes under 30 seconds. The Blueair 501 is for room sizes up to 679 square feet.10 year limted warranty, Award-winning Swedish design Description 2 The best made better! The 601 cleans more air, more efficiently. In rooms as large as 679 square feet, our patented two-stage HEPASilent technology captures 99.97% of 0.1 micron particles, including allergy-provoking pollen grains, dust mites, mold spores and pet dander particles. Blueair is the system for people living with allergies, asthma, or other respiratory conditions, or for anyone who wants cleaner, more breathable air. Advances in fan and filter design have dramatically improved efficiency, gaining the new 601 even better Clean Air Delivery Rates than the original Best of Class 501. Value-added features include quiet operation, low energy use, steel construction and easy maintenance: simply open the unit's lid, lift out used filters and drop in Replacement Kit every 6 months. Reviews from people who purchased this product: One word - Quiet! After having had a typical inexpensive air cleaner you can buy at most department stores for years, I was concerned about having a filter that was noisy. Our old filter was too loud to leave on even on the lowest fan setting. In fact we would sometimes turn it on for the sole purpose of providing background noise when our kids were sleeping. I picked the Blueair 402 because of the great reviews that it got for being quiet and for the great ratings on how well it cleans the air. It arrived yesterday and I have been impressed beyond what I expected. I may have had low expectations because of my old filter, but when I first turned it on I had to check to make sure that it was even running because I could not hear it at all! On the lowest two settings the sounds is not even noticeable. On the third setting you can hear it running, but the sound has a much better quality than other filters/fans. Even on the highest setting the noise it not that objectionable (quieter than my old filter on the lowest setting.) I wouldn't leave it at this setting for sleeping, but I wouldn't have any problem leaving it at this setting during the day, especially in a room I was not in. We left it on setting three all night without a bother (I may consider using setting two after our initial "cleaning" period is over. My wife and I both felt a noticable difference when we woke up this morning. Part of the reason for getting this is that we have a dog and two cats and we were both waking up in the morning all stuffed up and/or sneezy. This morning was noticeably better. The filter is very easy to replace also. The one downside is that the unit is rather large. As long as you know this going in, it shouldn't be a problem. Unless you have a very large area you are cleaning, you may want to opt against the 501 or 601 as I believe they are even bigger. I may consider getting a 201 for my kids' rooms since they are smaller bedrooms. Overall I'm very pleased and also like the fact that the filters are environmentally friendly compared with some of the filters used in other units. Too expensive, degrades over time: Works well and quietly The 402 is truly quiet. This was an important consideration for me; the reason I returned the 501 and 601 was because they were noisy. The 402 has four fan speed settings. The fastest is unpleasantly noisy; I would not want to be in the room while the unit is in this mode. The next fastest, though, is *much* quieter. We usually leave the units in this mode. Sometimes we use the next-to-slowest mode, for example when I'm watching a movie and sitting in a chair right next to the 402. The middle two speeds are sufficiently quiet that I never feel like I need to use the slowest speed. (The 501s and 601s are unbearably noisy at any but the slowest setting - which is slower than the middle speeds of the 402. For 2/3 the price you can move more air, more quietly. Go figure.) The only downside to the unit is size. It is about the same size as a tower PC. It's tall enough not to easily fit under furniture, and it's airflow pattern (in one of the skinny vertical sides, out the opposite side) means that the best placement is with one of the long sides against a wall. If wall space is at a premium, it can be hard to find a place to put it. I haven't had the units long enough to replace the filters yet, but I have taken out the filters that came with them, and put them back in. It was very easy to do. After two months, only one filter is showing any visible dirt - but the house is *much* less dusty. |
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