"John Gilmer" wrote in message
...



a few years ago when i last investigated, you could get an ac unit that
had
a gas powered generator in it that produced the power to drive the normal
ac
unit in the other half of the unit.

I think I saw something about that in Popular Science (or variation
thereof.) IF you didn't count the cost of the generator set it was about
break even. But the gas engine would need the oil changes every few
weeks
and a complete re-build ever other year.

It might make sense in you are "off the grid" but ...

http://www.polarpowerinc.com/product...s/cogenset.htm