On Wed, 9 Jun 2004 23:42:09 +0100, "nightjar"
wrote:


An air handling unit indoors and a heat exchanger unit outdoors. They are
joined by a 3m self-sealing umbilical that will go through a 50mm hole,
although I usually just stick it through a partly-opened window.

Does the heat exchanger unit outdoors have a fan to pull air through
the unit?

Graham