>
>Important to recognize is that furnace blowers draw current. This one, the
>16,000 btu Suburban NT-16SE, wants 2.8 amps when running. One hour of
>operation is 2.8 amp-hours, size your aux battery accordingly.

Also worth considering: the Atwood/Hydroflame furnaces are only 75%
efficient when running perfectly - Propex heaters are 95%. Throwing away a
gallon of propane for every three that results in heated air seems a bit
wasteful, not to mention fouling the environment more. Might that make the
efficient Propex a better deal in the long run?

Karl