by ClakarEQ » Tue Nov 08, 2005 2:10 pm
I've got a couple of them, as a gift from a well off in-law, but either way.
They work great for things like smoke, dust, pet dander, etc, they don't work against larger particles like pet hair or pet dandrif/dry skin. I've got one upstairs and down, clean them (well the wife cleans them) about once a week to 10 days or so, they are nearly always coated with nasty black shit.
BTW, neither of us smoke (cept me on the funny stuff) and never in the house.
Now the test it failed against was the wife and I are allergic to cats but we found a stray, wanted to keep it. Both of these units on full blast couldn't remove enough alergine from the air to reduce the symptoms so the cat had to go. I'm not clear if it was "soley" pet dander or if it was just the hair cuz the cat left hair EVERYWHERE.
The other thing is if you have poor air flow in the home, then these may not work so well, they themselves (the sharper image ones) don't have fans. The orec I demoed had a fan but made any room it was in smell like ozone.
Just my 2qtrs :p
EDIT
was going to add that many of these can be "demoed" or have a return policy, may have to eat shipping but better then the couple+ bills you'd have to fork over to buy one.