Shop AC - dust in the filter

  • Advertise with us

« back to Focus on the Workspace forum

Forum topic by Kirk650 posted 07-24-2019 03:47 PM 203 views 0 times favorited 1 reply Add to Favorites Watch
View Kirk650's profile


663 posts in 1227 days

07-24-2019 03:47 PM

Over the years, I’ve had had various window units in my shop. All of them had dust fines bypass the screen filters and eventually cause the units to lose efficiency. I’ve thought about different type AC units, but I’d expect they’d all suffer from the same problem, since they all have filters and pull air from the shop. Surely some of you folks have encountered and solved the problem. Please tell me how you did it.

Just to say it, I have HEPA filtered dust control on all power tools and a Jet ceiling mounted air cleaner. But there are still fines floating about in the shop. Can’t see them, but the AC sure collects them. It’s a slow process, but I can’t stop it.

1 reply so far

View clin's profile


1057 posts in 1475 days

#1 posted 07-24-2019 06:55 PM

Perhaps you can build an intake filter for the AC unit. You have to be careful not to restrict the airflow too much. Keep in mind that you are NOT restricted to the intake area of the AC unit. You could effectively duct it to a much larger area. The larger the total air filter area, the less air restriction it creates.

A simple example would be to butt a box up against the AC intake. One side is up against the AC unit, the other 5 sides could each have filters on them.

Of course, other styles of filters could be used. For example duct to a large pleated filter. But I’m thinking something simple, inexpensive, that you could use common HVAC filters on.

The other thing is just to make cleaning out the AC unit part of regular maintenance.

-- Clin

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics