"Donna Ohl, Grady Volunteer Coordinator" wrote in
message ...
On Sun, 10 Feb 2008 22:32:43 -0500, Nate Nagel wrote:
Hi Nate and others,
I appreciate the help.
One thing that confuses me to no end is this EFFICIENCY thing.

If both a 50 gallon and 40 gallon water heater has the same 59 percent
efficiency factor ... do they cost the SAME to heat?

Or does the 50 gallon water heater actually cost more even if it's the
same
efficiency?

Heating less water costs less, even with equally efficient heaters.