DIY Solar Water Heater From Plastic Bottles - Make a solar water heater from a pile of plastic bottles and cartons. This is great for the environment as it frees up waste trash and if you decide to build one you could use old bottles or what ever you have available.
How to make a difference - Cliimate Change and energy - How to make a solar water heater from plastic bottles - award winning system. The Ecologist | Links to PDF DIY instruction guide. Needs translation from Portuguese.