On Tue, 28 Jun 2005 07:31:10 -0400, "Dick"
wrote:

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?


I vote for the lower BTU unit every time. But that is assuming that
the EER is approximately the same for the two units. Always shop for
and buy the highest EER you can find.

My window units are about 11.0 EER. Normally, the cheapo units are
9.5 EER.

220 units might be a couple of percent less power at the most. Not
that much of a difference.