Originally Posted by Dan101
Endless supply of hot water is great
But if you treat it that way, the cost to heat the water is much greater than even a tank could ever be.
They are an interesting concept, and have come quite a ways in a short amount of time..... you still couldn't pay me to put one of those in my house.
If someone were to install one with the sole purpose of saving energy, I truly believe that they could. Especially in retro situations, the cost is always going to be high, again though, you have to treat your hot water as if you're trying to save it.
I wish I could remember the real term for the "triangle theory"
Water heater : Cheap install, Save Energy, Endless Hot Water. Choose any 2 (i'm sure i did that wrong, but whatever, you get the point)