Hardly scientific or accurate, but judging by feel, the OEM Dometic
propeller seemed to move more air than the computer case fan I hand on
hand.
But for the fuss of finding a new motor to put that prop onto, a
computer case fan seems to be the logical choice when the OEM fan
fails.
Some folks run two computer case rear fans and even build shrouds to
help direct the air. If one built a shroud around the cooling fins,
I'd suggest the rear fan(s) should be controlled by a switch and
remain connected to the OEM thermal switch. My guess is that a shroud
is a two fold affair; when the fan(s) is on, it will do a better job
of directing air along the cooling fins but it would also confine that
heat when fan(s) is off.

On one of my Domestics, I added a "city water" fan to pull air from
behind the fridge to the outside. This fan was switched. I routinely
turned it on when traveling in really hot weather.

Neil.

On 8/28/16, Jim Felder <jim.felder@gmail.com> wrote:

> I think the consensus is going to be that regular computer fans don't do a
> very good job.

--
Neil n

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