This pairs well with their other articles on heating like one about using hot water bottles to heat people instead of rooms. https://solar.lowtechmagazine.com/2

This pairs well with their other articles on heating like one about using hot water bottles to heat people instead of rooms. https://solar.lowtechmagazine.com/2022/01/the-revenge-of-the-hot-water-bottle/ https://solar.lowtechmagazine.com/2022/01/the-revenge-of-the...