David Nebenzahl wrote:
On 2/16/2010 8:59 PM DerbyDad03 spake thus:

I was looking at one of these "permanent" furnace filters at the Borg
the other day:

http://www.webproducts.com/Detail.bok?no=37

My question:

After you rinse one of these can you put back in while it's still wet
or should you keep a spare "regular" filter on hand while the
electrostatic one dries out?

Dunno, but funny thing: just today I helped a client who had washed
out his electrostatic filter units and couldn't figure out how to get
them back in. But these were the real McCoy, part of a Honeywell
electrostatic unit--you know, like with 20,000 volts and all.

How do these so-called "electrostatic" filters even work? There's no
source of electricity, so they must depend on some kind of static
charge. I can't believe they can be very effective.

By the way, the real electrostatic units held just an incredible
amount of filth. Really black crap. (They hadn't been cleaned in a
while.) So they really work. And since they weren't quite dry, I
advised my client to dry them out first before putting them back in
(we used a hair dryer).

I tip them up on a corner for awhile to drain them, then re-install them. Any
moisture will evaporate quickly when the fan runs. You could manually run the
fan for 10 minutes if you want.