On Apr 9, 10:25�am, ransley wrote:
On Apr 8, 8:10�pm, Wayne Whitney wrote:

On 2008-04-08, wrote:

again please post a link that says 20% go up the chimney........
please a link....... please........ all i see is someone stating it
must be....

Take a look at http://www.aceee.org/consumerguide/waterheating.htm,
in particular the life-cycle costs comparison. �This shows a typical
gas tank water heater has an energy factor of 0.60, and a typical gas
tankless has an energy factor of 0.80. �The difference of 20%
represents the standby losses. �Prior computations suggest that of
those standby losses, 7% represents the loss through the tank
insulation, and 13% represents the loss through the gas flue.

Cheers, Wayne

Hey Hallerb, here it is, read and learn.

look all along you have been posting 20% up flue but your own link
says.......

", 7% represents the loss through the tank
insulation, and 13% represents the loss through the gas flue.
"

since stanby helps heat your home in the winter, only 13% is actually
lost.

does your tankless have a pilot, if so the government says your saving
nothing........ this is highly likely since you stated your tankless
works in a power failure

if your home uses a lot of water the standby time is less, and your
tankless saves little, according to the government link here