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A comment on How bad is my gas stove?. Parent comment

Re:How bad is my gas stove? by yaomtc on Saturday January 15, 2022 @03:24AM (#29944787)
Is direct vent the same kind of tech as a heat pump?
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Re:How bad is my gas stove? by maxerickson on Saturday January 15, 2022 @07:58AM (#29945981)
No, older furnaces draw their combustion air from inside the building, the direct vent draws combustion air from outside.

Modern furnaces release a lot less heat as waste, one result of that is that there aren't a lot of hot gases to deal with, a flue isn't necessary.

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