Now, for my question (finally!). I have a half bath on the opposite side of the house from my propane water heater. Everytime I need hot water there, I have to let the water run for a few minutes before it gets hot. Can I use that electric water heater under the 1/2 bathroom sink feeding from the house's hot water line? In other words, rather than having the cold water line going into the heater, it would be getting the water from the house's hot water line. I doubt whether we would ever use 2.5 gals of hot water at one time there, so the hot water line coming going into the heater would probably never be really hot. This would be just for the winter months when the elec. heater is just sitting idle in the garage. I can't think of a logical reason not to do it, but maybe someone else has done it, or knows why it shouldn't be done. I may not install the heater anyway, but if I get ambitious (or really pissed off waiting for hot water), I'd like to know beforehand.