Quote:
Originally Posted by Steve
Need zero energy to keep a tank heated? No tank's insulation is that good. Hang around your water heater for a while and see how often it turns on to reheat the water to the 140 degree setting even though no one is using any water at the time.
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Sorry. Perhaps the wording I picked was not clear enough.
A tankless unit has no tank, so it cannot use energy to keep a tank of water heated.
No tank = no energy use for doing reheats.