Roy Smith writes:

Kyler Laird wrote:
When I dream about such things, I dream of an IC engine that could replace a
Janitrol heater.

Sounds like you've invented the APU.

It's unclear to me if you're pointing out something other than what
I would have thought was obvious, but if you know of an APU that can
readily substitute for a Janitrol, please point it out to me.

It's starting to get cold around here and my thoughts are turning
toward heat...

--kyler