回复：我家有个也封口，天冷室内暖汽会从那里往外包跑，烧壁炉不会增加多少热能，等于烧钱

来源: hmo 于 2012-01-05 09:59:27 [] [旧帖] [给我悄悄话] 阅读数 : (128 bytes)

you are talking about the old style furnace, the new furnace will heat up your whole house with fan carry the hot air around

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