It takes a few minutes for my tankless water heater to warm up, so we end up wasting a lot of water in our shower. Is there a way to avoid this? A friend mentioned a “comfort valve” or something? What is it and how does it work? Or is there another solution? Thx!

  • Fondots@lemmy.world
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    1 year ago

    Building on a concrete slab doesn’t exactly make a difference when I’m talking about an access panel in a wall though