A/C IDEAS ?

Posted by @J on July 15, 2007, 3:44 pm

It occurs to me that
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always uses a "window unit" for cooling.
Seems like it would be more economical
to have one central unit, and circulate chilled water
to heat exchanger in the rooms.
Anyone have any insight here ?
On the other hand,
I've got a neighbor who opted for window units
instead of having central air installed in his house.
He saved a bundle ! $300 vs $3000
And, he claims his electric bill is alot less too.
????
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Posted by Edwin Pawlowski on July 15, 2007, 4:00 pm

> It occurs to me that
> every motel I've ever stayed at ( 20 > 200 units )
> always uses a "window unit" for cooling.
> Seems like it would be more economical
> to have one central unit, and circulate chilled water
> to heat exchanger in the rooms.
> Anyone have any insight here ?
Maintaining a chiller is no simple task for a small to medium motel. You
have differing occupancy rates, thus big swings in load demand. Then you
have the piping to deal with, booster pumps, and, if the chiller goes down
you have the complete motel with no AC instead of a room or two.
I doubt the economics works well.

Posted by aemeijers on July 15, 2007, 4:57 pm

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You got it. They keep a couple 3 spares out back, and when one craps out,
the in-house repair guy can swap it out like a light bulb, in less than an
hour. Not a trivial issue on the few weeks a year the place is booked solid.
BTDT, staying in cheap motels for training courses on govt dime. Note that
most places, these thru-wall units also provide at least part of the heat,
in winter. I have noticed that the bathroom wet wall usually seems to have
enough central heat so pipes don't freeze if room HVAC goes down. I presume
they bleed this off the hallway heat, if there is an interior corridor, or
from the pipe chase that runs between the blocks of rooms on older motels
with outside doors. (I haven't seen a new outside-room-door motel go up in
at least a decade.)
aem sends...

Posted by <kjpro on July 15, 2007, 11:08 pm

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There not as safe!

Posted by aemeijers on July 15, 2007, 11:41 pm

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I dunno- in case of fire, I'd rather have a direct exit to outside. And the
trek with the luggage is usually a lot shorter. But I do understand how
some folks (women and elderly) feel more secure with an inside hallway,
against drunks and criminals. And I'm sure the doors and locks last a lot
longer out of the weather, along with the carpet near the door. Not to
mention a whole lot less snow-shoveling in winter.
aem sends...

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