I have the older 8000 btu/hr Maytag portable from early last summer which
works fine for cooling my entire upstairs in northern Illinois. But I
adjust my blinds to block direct sun and my neighbor's tree shades my home
in late afternoon. I wrapped the vent hose in white towels held on with
zip ties to help insulate that, attached foam plastic to the window
vent assembly to keep the heat out (facing sunny south), and blocked the
gap between upper and lower window sections for the partially open window
with the vent mount.
Does the air coming out of the unit feel cool? I assume you are venting
the heat outside through the window holder without letting too much back
in, but some (possibly warm) air ends up entering from somewhere to
replace what was vented. Poor insulation, solar gain, incadescent lights,
your PC's, and body heat can all contribute to heat gain and need to be
properly factored in for sizing. A kilowatt-hour of power use could give
off 3413 btu/hr (and may drop voltage and output of the A/C unit if on the
David Efflandt - All spam ignored http://www.de-srv.com /
The air coming out of the unit is about 17-18 degrees lower than ambient.
From what I am reading, it should be colder. These computers produce a ton
of heat, the power supplies alone are mini space heaters. Unit is going
back & I am ordering a more powerful one.
Thanks for your reply.
Assuming it's installed per instructions:
Air coming out should feel "cold". The actual cooling coils
inside the front cover should almost or might have frost on
them or at least lots of cold water covering them. It
sounds like you have a bad unit.
I would do a little googling to see what size ac is
needed, too. Volume is more important than square footage;
and you didn't mention ceiling height. Lots of ac web sites
have size calculators, Sinde you don't say whre you are
located, you may or may not have enough cooling power there,
but it WILL make a noticeable difference. Maybe not enough
of a diff, but a noticeable diff.
You're venting the exhaust out a window, correct? (It may seem obvious,
but then you didn't mention it so that we could eliminate it.) ACs don't
create cold so much as move heat. The heat has to go *somewhere*.
Alternatively, without the window exhaust, they seem to merely act as
dehumidifiers, improving the comfort in a room. Your problem doesn't
seem to be humidity (hopefully not, in a computer room), just pure heat.
This should get to the model:
It failed to make the standard 20 degree difference from ambient. From what
I understand, the manufacturer is known for that. I have returned it & I am
purchasing a 13000 btu model with dual tubes, intake & exhaust.
Thanks for your reply.
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