Look at the amp rating. That will tell you the total amps used.


"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?