I can expand a little on our system just to give a point of reference. As I mentioned in a post above, we had a domestic 110 volt system converted to a 12 volt system by changing to a Danfoss compressor
but using the existing plumbing
and cold plates. All in it cost us $800 including the new compressor, I don't know what the cost would be now.
The compressor drives 2 cold plates, one for a 2 cubic foot freezer
and the other for a 6.5 cubic foot refrigerator
. The thermostat dial on the refrigerator
has a scale from 0 to 7, set at 3 it keeps the fridge at the right temperature and everything frozen in the freezer
, including ice cream, and makes ice cubes quickly. If we turn it up past 3 the whole fridge starts to turn into a freezer and freeze everything.
We live aboard full time and we spend 80 to 100 days per year off the dock
on the hook, in 80+ degree weather
the unit draws a total of about 48 amps in a 24 hour period according to our Link 2000. Our system is front loading for live aboard convenience, if it was top loading I think it would be even more efficient.
The unit has worked perfectly for 8 years with no repairs
required. Hope this helps.