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https://en.wikipedia.org/wiki/Circulator_pump#Use_with_domestic_hot_water https://en.wikipedia.org/wiki/Circulator_pump#Use_with_domes...

• Gigachad 1y ago
  This seems like something that only makes sense when water is scarce but electricity is cheap. You’d be constantly losing heat to the poorly insulated pipes.
  • tguvot 1y ago
    I have all hot water pipes insulated in my house
  • maxerickson 1y ago
    People who do it more or less don't care about the price of energy (except maybe in the abstract). It's for comfort and convenience.
  • Scoundreller 1y ago
    And you're fully losing heat if you dump lukewarm water down the drain (instead of cycling it back to the heater) to eventually get hot water.