Solar Thermal Hot Water, Heating, and Cooling

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Back in the 1960s, the care-taker at a summer lodge that was in our family rigged a makeshift solar water heater: he laid a black sheet of plastic against the hillside next to the pool, hooked up a small pump, and attached a hose that directed the water down the plastic, where it was warmed by the summer sun before it flowed back to the pool. While not particularly attractive, his invention worked very effectively to provide low-cost hot water in the mountains of Colorado, where nighttime July temperatures often dipped below freezing.

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