🚀 go-pugleaf

The SunFrost refrigerator is sold by Real Goods (Ukiah, CA) and is quite expensive.
The main energy efficiency comes from thicker insulation, but it also has more efficient
motors and puts the compressor on top.

I considered getting a SunFrost, but figured out that payback time was more than twenty
years.  For people using solar electricity (Real Goods's market) the payback time is much
shorter as photovoltaic panels are still quite expensive.

The Sunfrost could be made cheaper if it were mass-produced, but it probably wouldn't come
down to the price of the mass market refrigerators.

Incidentally, I believe that putting the compressor on the bottom is largely a safety
feature---it makes the refrigerator less likely to tip over by putting the center of gravity
lower.