Evosolar: Solar Water Heater Pumps
Evosolar, solar water heater pumps are high efficiency heat pumps that use the power of the sun to provide passive heating to an interior space. This sopisticated and electricity free system has over a dozen component, but is not terribly difficult to install or use. The solar plate collector captures heat, which is absorbed by water in pipes. Hot water cycles out in a convection cycle and distributes the heat indoors. This unit should last for decades.