A worker in the Copper Industries factory in Northern Ireland soldering a copper pipe for part of a Willis Renewables Solar Syphon. Copper Industries are the company that manufacture the Solar Syphon for Willis Renewables. Willis Renewables are the inventors and distributors of the Solar Syphon, and are based in Belfast, Northern Ireland. The Solar Syphon system is a simple ‘add-on’ heat exchange unit which provides a lower cost installation alternative to the traditional twin coil solar cylinder. Willis Renewables won an Ashden Award in 2010 for its inspiring sustainable energy solutions.
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