Comments on: Air Cleaner http://www.cjc.org/blog/archives/2004/02/24/air-cleaner/ Sun, 26 Sep 2010 03:06:45 +0000 hourly 1 https://wordpress.org/?v=4.9.8 By: Cheng http://www.cjc.org/blog/archives/2004/02/24/air-cleaner/comment-page-1/#comment-192 Mon, 08 Nov 2004 15:11:47 +0000 /?p=128852#comment-192 Just a note: we no longer use or have the old HEPA filter, having switched over to the Friedrich C90A. This is an electrostatic/ionic filter, where, every few months, you wash the electrostatic fins of the accumulated dirt.

I picked the C90A because it doesn’t require replacement filters, and because it was the highest rated filter in that edition of Consumer Reports. It also has a very high clean-air circulation score, as referenced in my blog posting. I did not pick one of those Sharper Image Ionic Breeze models because, as far as I could tell from the more critical/systematic reviews, didn’t do anything my old TV wasn’t doing in terms of attracting dust.

If you go for an electrostatic purifier, go for one that has active air circulation (i.e., a fan). The Friedrich was the best of the ones that has such a fan, though it’s an ugly box. There are others, but I don’t recall them being as highly rated as the Friedrich.

I will email this comment off to you, too.

]]> By: Peter Mitchell http://www.cjc.org/blog/archives/2004/02/24/air-cleaner/comment-page-1/#comment-191 Mon, 08 Nov 2004 02:48:53 +0000 /?p=128852#comment-191 I’m wondering, how often do you find yourself having to change your hepa filter?

Why did you pick a hepa filter over an ionic filtration air purifier?

I’m in the market for one, and found your blog on this useful. Thanks!

-Peter

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