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Heat Pumps are Not Hard: Here's what it will take to start pumping

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Technology Connections 从共用燃气账单的公寓讲起:单户换窗付全部费用,却只能分到节能收益的一部分。评估热泵改造时,建筑原来的供暖方式和住户分摊费用的办法都会改变决定。

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all occupants shared a single gas bill

if we had gone in together as a building to replace all of the windows

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