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Joined 2 年前
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Cake day: 2023年6月11日

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  • That fitting is installed between the hot and cold supply lines at a single location/fixture in the house, usually the farthest away from the heater. Then, a compatible tankless heater can use a pump to push hot water out while pulling the cold water back in through the cold supply line - so no extra recirculating pipe has to be installed. You trigger the recirculation with a switch at the fixture, on a schedule, or with an app/smart home device.








  • Bottomless is easier to clean and lets you see more of what is happening with your shot - you can tell if your tamp/etc is even based on where the coffee first comes through. More of a mess though if you have shoot-through.

    I think bottomless is also more desirable/seen as an upgrade if you ever sell the machine.