Do you know of any source for a full size one that could run on natural gas? Like you said, looks like they are all quite a bit smaller (or huge industrial systems). I do dislike the noise of refrigerators and if my current one fails I would like to try a gas powered replacement. Also, natural gas in California is way cheaper per unit of energy than electricity (thanks to Enron and other factors). A gas frig could be cheaper to run than electric here.