
The Sun Flux is a box of electronics with one function: heating water with solar electricity.
I recently wrote about solar hot water diverters1 which use surplus electricity from an existing rooftop solar system to heat water.
Another option for heating your water with solar electricity is to use dedicated solar panels. These panels put all their power directly into the hot water cylinder’s heating element. When the water hits its temperature set point the panels are deactivated. [Read more…]









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