On Sun, 12 Jun 2011 23:21 -0400, "V G"  wrote:

> I'm considering putting together a very simple HEPA filter air purifier
> for
> my apartment. Just a simple fan and filter design. Nothing fancy. Cheap
> as
> possible.
>=20
> Does anyone know where I can get cheap large HEPA filters?
>=20
> At the very least, I want some so I can cut them to shape and stick them
> on
> to the exhaust of my vacuum cleaner.

I use a "box fan", one of theose cheap fans about two feet square and
six or eight inches deep. Tape a furnace filter on the intake side. You
can get square furnace filters that are almost a perfect match. Good
filters are ten to twenty dollars, depending on how "good" you choose.

Much quieter than a vacuum cleaner, with a longer motor life!

Cheers,

Bob

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