water boiler Archives – The Green Optimistic green tech news, since 2008 Mon, 26 Jan 2015 15:03:31 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 How to Make a $5 Solar Water Heater From Junk Fridge https://www.greenoptimistic.com/make-solar-water-heater-fridge/ https://www.greenoptimistic.com/make-solar-water-heater-fridge/#comments Tue, 17 Feb 2009 18:24:58 +0000 https://www.greenoptimistic.com/?p=2329 One simple way of making hot water has been perfected by a blogger on thesietch.org, and it relies on a simple and easy to find piece of junk: an old refrigerator!

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