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DT

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Sizing a mini-split a/c

In article ,
says...
A friend is looking into putting in a mini-split air conditioner. The room
does not have an outside wall. She has calculated that she needs 6000 to
7000 BTU--max. But all single zone units I find are about 9000 BTU. She
very much does not want an oversized unit that leaves the room cold and
clammy.

Some units I find have a dehumidifying mode. Does this mean that when it
reaches the set point temperature it continues to run to remove the
humidity?

It does *not* mean that. Unfortunately, the mini splits do not have a very
sophisticated control scheme. All the dehumidify mode means is that the unit
cycles on and off on a fixed timer. It does not control temperature at all in
this mode. Mine runs for something like 7 minutes on, then 3 minutes off.

We tend to have many days with high humidity but not real high outside
temperatures, and the dehumidify mode works fairly well. But if it cools off
in the evening, it can make the room quite cold.

--
DT

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