Zojirushi PAMTC14 Ultra Slim Air Purifier

[UPDATE: I've now had this air filter for one year. It's still in good condition, and I've figured out how to use it. Basically, if you are a sensitive allergy sufferer like me, you need to keep it on its very highest setting while you are in the room (I was leaving it on "auto" when I wrote this review.) Luckily even the loudest setting is not much different from my friend's Honeywell filter on "quiet." When the setting is left on high, I can smell that the air inside my tiny room is noticeably cleaner and fresher, and my allergies are noticeably better. I wish I could upgrade the star level to "4". My original review follows:]

I'm not sure this filter is really doing anything; it certainly hasn't helped my allergies. I have it in my bedroom, which is a closet-sized room very high ceilings, about 98 square feet/1000 cubic feet in size. The filter itself is very narrow and tall, about the size of two flat screen computer monitors, so it fits really well against a wall...Read more

We purchased one 3 years ago when we had our first baby. It served us well. Quite, automated and looks great. Now we got a second one for another room in our house. Replacement filters can be a bit costly at ~$45, but they do last long. It's worth the money.

We alway like stuff from Zojirushi. Great products and well built.

I agree with everything Patrica had to say in the previous review. There are two speeds: high or low, and two modes: always on or automatic. In the automatic mode is senses the air quality and turns on as needed. In the manual mode, it's the same speed all the time. It does seem to be completely random and I don't have a lot of faith in the algorithm - but who knows - these are supposed to be very small particles anyway. The low mode is ultra quiet, as promised, but the high mode is ultra noisy, so loud that it wakes me when sleeping. So, I use low mode. I've had it for around a year or so, and, the filters are not dirty at all. This makes me wonder if it's doing anything useful. If it were cleaning the air, I'd expect to see buildup of materials in the filters. It's probably doing no harm, and doing some good, just not sure how much good ...