How does your electric water heater defy the laws of physics? ANY hot water line that sits stagnant will start losing its heat immediately when the water usage stops flowing. Electric or on demand, makes no difference. When you first your hot water, it will take time to expell the now cool water in your how water line. Or am I missing something?
I put a thermostat on a on/off switch in the furthest fixture from our on demand water heater. Uses the cold water line as a return loop. I truly have instant hot water with no water loss down the drain. The best of both worlds.
I don't like instant... wastes 2-3 gal of water waiting for instant to reach the faucets. Would use a garden can to catch the waste for plants.[/QUOTE]
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