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• 18:34, 26 October 2024 Elie talk contribs created page How much less energy could be used in heating & cooling buildings, in most cases? (Created page with "Ok so we all know there are options, but how often are they really worth the tradeoffs when retrofitting existing buildings including homes? * A ground source heat pump requires a huge amount of renovations (which themselves might have a large environmental footprint). Is there even enough space for it in most cases? * An air source heat pump is only beneficial in moderately cool weather. In colder weather, it's not much better than an electric heater (which, if...")