On Mon, 11 Feb 2008 08:17:59 -0800 (PST), wrote:

http://www.ho****er.com/products/residential/gas.html

We're getting closer!

The nice thing about the site you recommended is it contains a freeware
payback calculator which we were missing up until now!

http://www.ho****er.com/products/payback.aspx

You enter in the cost per therm (e.g., $1.33/therm) and the gallons per day
and then it compares two models, given their cost, to calculate how long
the payback period is for the more expensive one.

The only thing missing from this free payback calculator is the FHR and ER
calculations which it assumes because it only allows its models to be
compared.

Does anyone know of a freely available payback calculator that allows all
brands to be analyzed (i.e., it takes into account the FHR and ER ratings
which all water heaters must provide)?

We'd all benefit from your advice,
Donna