On Sun, 28 Jul 2019 20:25:38 -0700 (PDT), A K
wrote:

On Sunday, July 28, 2019 at 8:34:20 PM UTC-5, Clare Snyder wrote:
On Sun, 28 Jul 2019 20:45:25 -0400, Jack Daniels
wrote:

On 7/28/19 7:48 PM, A K wrote:
I cleaned a pleated HEPA filter for my vacuum cleaner.

I want to dry it out.

I ran 70% IPA thru it to draw out the moisture, but it still has some residual moisture in it after 2 days.

Any other ideas to try?

Would putting it in the fridge for maybe a week help since the fridge does a good job of drying out food. :-)

Thanks,
Andy



Rinse it out with a cup of Everclear and let it air dry.
Some are totally ruined by water washing. They "deform" and basically
permanently plug up. I've had the same problem with a simple
automotive air filter. Wash the dust out, dry it - even using a hair
drier - and NO air gets through it afterwards.

Thanks so much.

You got me to thinking. I blew through the filter and hardly any air came out the other side.

My Hoover Windtunnel does work without it being installed.

I guess it just cleans the exhaust air coming out into the room ??

Andy



yes - but they are relatively cheap and SHOULD be replaced.

from HOOVER:

A washable HEPA filter should be cleaned by rinsing it under cold
water. ... A HEPA filter marketed as “permanent” should be cleaned by
gently using a vacuum cleaner to suck away dust and debris from the
surface of the filter. Water should not be used on these types of
filters