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Cake day: 2024年6月7日

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  • That’s great in the summer when you want to be cooling the air inside your house, but not so great in the winter when you want you want to be heating it. I’m hoping some water heater manufacturer figures this out someday and builds a unit capable of switching air sources for the heat, such that the cold output air could be circulated directly into the living space or ducted in a loop to the outside (or attic).