People are talking about the metal and blah blah blah…. what you’re actually talking about is whether you could create a vacuum barrier around the outside of your house to nullify heat transfer. And the answer is, sort of. There are already vacuum sealed insulated panels but obviously there’s space in between, and they don’t really do much more than regular insulation. If you could create entire walls with perfect vacuum seal, you’d still need to have door and windows, and this is where most of your climate control is lost anyway.
If you could create a perfect vacuum enclosed room, you’d nullify heat transfer, but also air transfer and moisture. So you’d have a new set of problems.
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