this post was submitted on 01 Mar 2026
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One reason the window directly over my head in bed stays open all Winter.
I don't want it too cold when sleeping, and heating a room with an open window is wasteful and expensive.
I'm personally planning on installing an air to air heat exchanger. Even a cheap one can get 75% recovery. Add in some air sensors to make it smart and it's fairly fire and forget.
I love the cold and the bedroom is off circuit.