[s2man]

I saw a guy in Mother Earth News, long ago, who built an electricity free ice box. He had pipes going up to a finned tube on the roof, and back down to a BIG tank of water in the fridge. When it was below freezing in the fall he opened the single valve in the circuit to let freon thermosiphon from the tank to the roof, eventually freezing the water. In the spring he shut the valve. His chunk of ice would last all summer. Of course, the box was super insulated, and most it was filled with ice. And he had to build it into the wall, because the floor would not support that weight.