Travis Jordan wrote:

I think the problem with evaporator drain pans is that the drain comes
off the side rather than the bottom. Because of the way the connector
terminates this means that there is usually 1/4" or so of water in the
bottom of the pan. I don't know why HVAC manufacturers haven't dealt
with this issue - maybe it just hasn't been important to them?

The drain pans in my house (the ac is in the attic) are tilted, so that
the outlet is in a low corner. This minimizes the water collection.

Leaving the fan running when it's not actually cooling would be stupid.
The attic is 140 degrees, and all I'd be doing is pumping the heat
from poorly insulated ducts back into the house. Whoever designed this
type of installation was trying to get the homeowner to consume as much
energy as possible, but hey, it installed real cheaply.
grrrrr....