As I think about heating and cooling issues, I recall that a hearse manufacture here near Cincinnati, used to use radiator heated hot antifreeze/water mixture to circulate through a 2nd heater in the rear of the the coach to heat the back end of the rig.....it was also used to heat the rear of special limos that they made....another guy told me about a hot water heater that had a s/s coil in it that was heated by the radiator fluid so you had hot water when got to your destination...any comments?...geof
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