09-15-2010, 07:10 AM
quote:
Originally posted by Nancy Fryhover
That is great. I love that, because it is a lower cost for those on tight budgets but still much more energy conserving than the old tank water heaters. As a person has more funds, adding a solar water heating system to the demand would be even more energy conserving. Also, if there just isn't any sun, the demand could then produce the heated water. At least, that is my thinking.
Nope, overall that would a larger carbon footprint to add an on-demand to a solar water heater, and redundant if you are talking budgets. The solar heater flips to electric when there isn't enough sun. The new panels dont need as much sun either to heat them up.
The larger footprint isn't just about the usage but also the mfg process.