Model HP240, 60gal tank attached, come with 30 heat pipes and has 2500 watts heating power. A normal home needs 1 for a sufficient supply of hot water on sunny days, can be installed in series with a tank-less-gas heater. 43 ft² (4m²) space needed for a roof or ground installation. Price: US$2490.00...

Model CHP30, no tank attached, come with 30 thermal-tubes and has 2800 watts heating power. A normal home needs 2 for a sufficient supply of solar water, can be installed in series for any size home or business. 43 ft² (4m²) space needed for a roof or ground installation. Price: US$1590.00 in San Diego. CHP30...