BLACK+DECKER Electrostatic Precipitator Air Purifier, HEPA Air Purifier For Up To 2,520 Sq. Ft. per 5 Air Changes, 4-Stage Filtration System with Ozone Filter, ENERGY STAR Certified, BAPUV350, White

Updated review. Ugh.While I hate the fact that the replacement filter takes so long to get, it turns out that the issue is NOT with the filter but a dirty sensor. Right above the filter bay, there's a sensor that needs to be cleaned every 2 months or when the sensor seems to be reading high. To clean it is relatively easy, but does require q-tips to do so. The filter itself did not appear to be dirty by any stretch of the imagination.The wife does have an allergy to some dust; and this filter has worked the BEST of any that several sorts of air cleaners that I have tried. If I could justify the price tag, I'd buy another. But it is pricey. I don't recall seeing a manual provided with the device; but did find the one here on Amazon. But I'm a guy; most guys don't read manuals. I should have re-read the manual a time or two more than I did.The air filter works GREAT, albeit a bit annoying at times because it likes to turn the fan speed up to 4 when the lights come on. Wife noted how it reacts to smells from the bathroom, or from the kitchen or food in general . 2 of the 4 filters are washable thus don't need to be replaced; rinse out and let them dry before putting the filters back in. That 4th filter - well, it will require replacement.. The advertising is weird because it advertises 2160 hours; like who in their right mind measures filter life in hours ? It's 90 days; stop trying to be a smart aleck vendors. What you won't find in the advertising is that it's ALMOST impossible to get the filter within 2 weeks probably closer to 4 weeks. And for the privilege of waiting, you'll pay just a tad over $50 for that single filter element. Go elsewhere, and you'll see prices topping $135.Once that filter starts to reach it's 90 day age, the meter on the device starts to climb. 20, then 30, then 40 then 50.. Once beyond 60 or 70, the unit will start to run at fan speed of 2 or 3 --which means it gets considerably noisier and well, it's extra wear and tear on the unit. ( This may have been caused by the dirty sensor; who knew ? )Do yourself a favor - get extra filters within a month of buying this device. If one could get the replacement filters, it would not be that bad. Actually a washable filter of 9x13x1.6 is nearly impossible to source; While I rewrote this part to be not as severe, it's still on the vendors to support the products that they sell. It should not take two weeks to get a filter shipped.Final notes: Be sure to clean that pesky dust sensor; the instructions are on the back of the device or in the manual. Be sure to pick up a spare filter in case you need to change it out; it should not take 2 weeks for a simple filter to be shipped out. Unfortunately, I could not find the filter locally.Diligence: perform your due diligence when choosing an air cleaner; see if you can get filters; while researching replacement filters, I saw another $1200 air cleaner- where one can buy the cleaner, but the only filters available are used filters at $134 . Yes, that's right, used air filter elements for a $1200 air cleaner.

Actually, I've been using this air purifier for half a year now. I live in an apartment, but considering that hardly anyone buys this product, I didn't feel the need to advertise it. So, I'm sharing my experience here. I've had several air purifiers before, but I've only kept one in the living room because its performance is the best.Pros: It's an electrostatic dust collector. Except for the HEPA filter, all the other filters can be cleaned. It uses static electricity to attract larger particles, and then the HEPA filter takes care of finer particles like PM2.5. So, in terms of performance, I feel it's ten times better than the other air purifiers I've used. You'll see a lot of dust on the back side of the first layer filter because the second layer catches dust that falls on the back of the mesh, while the front side catches hair and other debris.Cons: The design of the detector on the back is not reasonable. You need to buy a small cotton swab and wipe the detection port on the back every few months. Also, electrostatics generate ozone. Though it has a carbon layer to filter out ozone, I bought an additional air tester. I haven't observed excessive O3 levels in my place, but I can't guarantee that due to quality control issues, there won't be excessive ozone emissions.In summary, this is the most powerful air purifier I've come across. Its filtering effect surpasses any other I've used. I bought it with a try-and-see attitude. Although there are occasional minor inconveniences, I'm particularly sensitive to air quality, which is why I purchased several air purifiers. If you are also particularly sensitive to air quality, I hope this review helps you. Please give me a thumbs up.

I have a pet cat. The filter eliminates most of the fur shed by the cat. It can be left on Auto, or set manually. It has a night mode. The sound is quite minimal at low to medium settings. A good product!

I had to return it because the overwhelming strong metallic odor, even after washing the main filter.If not for the odor, it would have been a 5