Beyond food supply, one of the ways in which humans have increased their life expectancy, in my opinion, is to have hot water on demand. We all consume it, but have we ever thought just how much energy this consumes and how that energy is produced? At nearly 20% of household consumption on average in the USA, well thats a lot and there are alternatives for sure! This article details appropriate technology features for just that. https://treeyopermacultureedu.com/appropriate-technology/water-heating/
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