50 gallons of hot water used up in a shower by 1 person?
No, my wife doesn't use up
all the hot water...think of it like this:
1) Hot water is taken from the water heater.
2) Water heater tank begins to refill with much cooler water.
3) Temperature of water in heater is reduced by the addition of cold water
4) Hot water heater kicks on to re-heat water.
5) The loss of hot water and influx of cold water overpowers the amount of heating power in the water heater.
6) Temperature of hot water leaving water heater is reduced from the initial temperature until water being taken from heater is ended and heater has time to reheat the water.
She just likes scolding hot showers. Way too hot for me!
You're probably right about the amount of savings, especially during the summer since the garage temperature hovers around 100-110 degrees in Phoenix. I'd probably see more savings in the winter since the garage temperature is much cooler.
-pat