What is the minimum distance off the floor (and off the ground) that a
through-the-wall air conditioner can be installed? This 8,000 btu a/c
is going under a window, and I have only about two feet of wall space
between the floor and the bottom of the window. Is this enough?
If this is a first floor, you also have to think about what's on the
OTHER side of the wall - a sleeve AC mounted near grade my have the
airflow to the condenser coil obstructed by vegetation, or may admit
water if snow drifting against it melts due to warn air infiltrating
out withing the sleeve and then ice dams, forcing melted water to flow
back between the AC and the sleeve and into the the wall cavity or
interior of the structure.
Paragon Home Inspection, LCC
For my Friedrich through the wall unit, the minimum is 3.5". Look at
the link to see a measured diagram.
This should apply to any TTW unit, but check out your unit's
manufacturer's instructions/Website just to be sure.
My upstairs PTAC is sitting about 3" off the floor that's all the room
there was, the top is against the bottom of the window frame (2 X 4).
that's a little lower than recommended, there was a sub-base ~ 3 1/2"
that was supposed to go under the front of it, but there just wasn't
room enough so it is still in the box (anyone want it?) It works fine
like that, PTACs blow upward @ ~ 45 degree angle anyhow.
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