"Wild_Bill" wrote in message
...
It's a good idea to choose a filter size that is at least several more
times larger than the original intake opening.
A frame that allows easy changing of the filter works out best, so it's
not too much trouble to swap in a clean filter, that way changing them
before the internal parts get clogged instead of procrastinating too long.

I'm certain that material like bedsheet would be too restrictive and
greatly reduce the A/C unit's performance. Less airflow, no worky.

I use the double or triple layer cut-to-size (furnace filter) material for
air cleaners, and cover the edges with wide masking tape (~1.5"). The
edges will leak a lot of dirt if they're uneven and not taped.

Over the outside, I unfold dust-grabbing painting/refinishing tack-rag
(rosin treated cheesecloth, I think), and instead of just laying it over a
louvered panel/grille for example, I use dowel rods or other features to
hold the tack-rag away from the front panel (utilizing more surface area
of the tack-rag).

With the edges of the trimmed tack-rag held in place with wide masking
tape, it's fairly easy to just peel the dirty one off, and replace it with
a clean tack-rag.

I'm not clear on which you actually use: furnace filters, or the tack-rag
stuff.
Or are these just two alternatives?

Are these things that HD carries? Under what name?

Good ideas, tho, overall.
The bottom opening to the Amana is quite curvey, so indeed there will be a
lot of cutting/duct -taping.

That box filter idea is excellent, altho probably more for a wood shop than
metal.
Altho, proly *required* for a metal shop in which occasional woodcutting
occurs, like mine.
But, ahm walkin sideways in my shop as it is....
--
EA



I wouldn't use a tack-rag in a furnace because I don't want to introduce
potentially flammable material inside (I assume they're not
fire-resistant), but for room air cleaners, window A/C units, room
dehumidifiers, they work great.

The important feature is to have (at least) several times more area for
the filtered opening.. that way, the filter can become partially
restricted with dirt before significantly reducing air flow and
diminishing performance.

A box about 22" square, with a decent axial fan fitted so it's blowing
out, and a cheap 20x20" furnace filter covered with a tack-rag fitted to
the intake side, will catch a hellofalotta airborne dust in a workshop.
The little breeze can be comfortable in the summer up here in the
northeast.

I made one with a squirrelcage blower in it (wheel size ~7" dia x 3"
wide), and the output feels similar to A/C when the temps get hot. I had
it on a stand about 4 feet height so it was easy to move around.

--
WB
.........


"Existential Angst" wrote in message
news:4c394b82

It actually won't be that hard to do. I will scavenge the innards of a
typical frame filter, and just duct-tape it around that big unfiltered
opening. Won't be pretty, but it will work.
Even an old bed sheet would proly work!
--
EA

~~ Evan