[arcticdude]

When we had a problem with our AC’s and resorted to a portable unit, we had real troubles getting the units’ heat output controlled. It cooled very well, but the heat output was massive! We ended up wrapping the exhaust hose with the mylar emergency blankets (found in WalMart) to help retain the heat in the hose as it exhausted out of the coach.

The hose got hot enough you couldn’t keep your hand on it without the blanket wrap.