We are looking at an in-line on demand electric water heater. The distance from the tankless to the kitchen requires a long wait time for cold water to be fed before the hot water gets there. Imagine the tankless is at one end of and below the house (basement) while the kitchen and master shower is at the far end.
My idea is to install an electric on demand heater which provides quicker hot water until the tankless supply kicks in. At that point, the on demand would cycle down (?) allowing the water to primarily be supplied by the tankless.
(1) Do on demand electric heaters sense the input water temp and adjust heating downward as the input temp gets hotter?
(2) Should the on demand heater be as close to the fixtures calling for hot water?
(3) Which brands can you recommend based on performance and longevity?
My idea is to install an electric on demand heater which provides quicker hot water until the tankless supply kicks in. At that point, the on demand would cycle down (?) allowing the water to primarily be supplied by the tankless.
(1) Do on demand electric heaters sense the input water temp and adjust heating downward as the input temp gets hotter?
(2) Should the on demand heater be as close to the fixtures calling for hot water?
(3) Which brands can you recommend based on performance and longevity?