Another possibility is to use a refrigerator that burns gas or kerosene. I'm not sure how these work, but my best understanding is that at least one design has no moving parts, thus it should create little noise. A place named Oasis Montana (www.oasismontana.com) sells refrigerators like this. One model is apparently quite popular with the Amish. Another company, Servel, is one that's been around, I think, for years--I remember seeing an ad in an old magazine from the forties with the housewife saying how unhappy she was with her old refrigerator which got noisier with every passing day. And then she found Servel, and her worries were over. (Maybe she was an audiophile, and found the noise from the old GE Monitor top drowned out the Philco console.)