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3M Filtrete Ultra Clean Air Purifier, FAP02-RS by 3M
Product DetailsManufacturer: 3M Brand: 3M Edition: Kitchen Model: FAPF02-RS Color: White Publisher: 3M Studio: 3M Music Label: 3M Product features: - Cleans rooms up to 160 sq ft - Bedroom Size
- Advanced Filtrete filtration technology effectively captures 99.9% of airborne particles and allergens
- Design allows more clean air to flow through your room
- Quiet operation
- Filter change indicator senses the particle accumulation on the filter, taking the guesswork out of filter change
Accessories:
Tools and Hardware Reviews of 3M Filtrete Ultra Clean Air Purifier, FAP02-RSCustomer Review: bunco Summary: 2 Stars
The room air filter market is full of bunco. This one is no different.
3M is notorious for selling high filtration replacement filters for return-air registers on residential central HVAC systems. Most homeowner purchasers are not aware that the restrictive filter more than doubles the static pressure drop and will almost always exceed the specified limit of the system unless a second or third return air register is installed to double or triple filter surface area.
The bunco with room air filters is their pitiful capacity given the amount of noise they make. 3M claims this one works for rooms up to 160 square feet but they don't claim how many cubic feet of air the unit moves per minute (CFM). Most manufacturers who do claim CFM use the rating of the fan and motor without the filter media attached.
A 160 square foot room is about 13 x 12 feet -- a typical bedroom. With 8 foot ceilings it would have 1280 cubic feet. To attain five room air changes per hour, the unit would need to move about 107 CFM. Five air changes per hour is a rule of thumb -- keep in mind that the unit will not have a laminar air flow and some of the room's air will remain unfiltered while other air will be recycled through the filter many times.
To achieve 107 CFM through the filter media, the fan would actually need to be rated closer to 200CFM. This is the equivalent of four typical bathroom fans. It would be about the same as a cheap kitchen range hood (the kind that are under the microwave over the stove) on the high setting. The bottom line: even the highest quality 200CFM fan compact enough to fit in this unit will be so noisy that it will interfere with basic conversation. Remember that you cannot get far away from this unit either -- because it filters rooms 12 feet across, you'd need to be no more than a few steps away receive any benefit.
Because people report the filter media fills up with dust, isn't that better than no filter at all? No. The unit's ciculation of the air actually stirs up the dust it catches in the filter. Without the blowing, the dust would settle to the ground where it could be picked up with a mop in a few seconds without blowing it up in the air. If you have carpet, a quality vacuum with an efficient filter (Miele) would work best.
This type of unit (or more typically a box fan with a cheap furnace filter) does have an application in source control -- for example in a room where you're sanding the dry wall after taping or a shop where saw dust is being produced. But for continous operation it is not practical or beneficial.
The right way to keep your home's air clean is: source control, ventilation, filtration (in that order). If you have a mess in your air, fix the source of the problem first. Then ventilate your home because fresh air is usually better and always far simpler to obtain than filtered air. Filtering dirty air is far more difficult than just blowing it out -- it's comparable to trying to filter your effluent instead of just bringing in some clean water. Moreover, when you realize that ventilation should provide as much as 1 air change per hour, it should hurt to realize how that precious, expensive filtered air is just going to be blown out almost as fast as you can make it.
Description of 3M Filtrete Ultra Clean Air Purifier, FAP02-RSThe Filtrete Ultra Clean Air Purifier is the perfect complement to any home comfort product set. Until now, consumers had to choose between bulky, noisy HEPA purifiers, or quiet, but much less effective, smaller designs. Now 3M has developed an air purifier that delivers maximum efficiency in one quiet, stylish, compact unit. The key to this delivery system is the combination of Filtrete filter technology and cutting edge design. This Filtrete(TM) Air Purifier offers more Air circulation and a higher dust and pollen capture rate than a comparable HEPA Air Purifier. For rooms 160 sq. feet. or less.
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