Which brings on another threshold effect I like to call furnace dumping, which is, quite simply, if you have a building that doesn't need to be heated with a furnace, you save a whole bunch of money up front.
也带来了另一种门槛效应 我称其为“抛弃锅炉” 非常简单 如果一个建筑本身不需要靠锅炉房供暖 你就节省了一大笔资金