"Dick" wrote in message
...
I have 2 window units:

1. an 18,000btu 220V
2. a 10,000btu 110V

I remember reading somewhere that, while obviously bigger & more powerful, the
18K unit is cheaper to run because it's 220V.
This is counter-intuitive but does anyone know?

This is Turtle.

In No way is a 16k window unit cheaper to run than a 10K window unit, Period !

If you had a 16k btu window unit and another 16K btu window unit and all were
the same but one was a 110 volt unit and the other was a 220 volt unit. there
will be NO cost difference between running either one. The ideal of a difference
is a Myth of the electric world.

TURTLE