On Tue, 17 Jul 2012 15:32:48 -0700 (PDT), "
wrote in
Re
Portable A/C units:

So, to clarify, the exhaust hoses, which they all have,
are for getting rid of the heat from the condenser.
If they have an intake hose, which is a better design,
then it supplies the cooling air for the condenser
instead of wasting cooler room air for that purpose.
That air then goes back out via the exhaust hose.

Exactly. Units with both an exhaust and INTAKE hose are a far better
design.