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.
A Double-Duty Solar Solution:This simple solar water heater provides both domestic hot water & space heating. You can adjust the size & design to meet the needs of your home. You’ll find nearly all the materials at your local hardware store, & to build it, you need only basic carpentry skills & a little plumbing know-how. Amazingly, the cost of this DIY system is only about 1/8 of what you would pay for an equivalent commercial system!