OK, Donna and Schock, and any other refrig experts:
I need to replace a 20+ year old Adler Barbour Cold Machine. It has worked hard doing a pretty good job in a factory ice box, about 5-1/2 cu ft with only 1" of insulation.
I don't need all that refrig space and I can't access the outside of the box, so I added 2" foam on the inside-- bottom, top, and all sides. My new box is nice and tight. This should ease the work on the unit considerably. Of course, I cut my refrigerated space down quite a bit, also-- down to about 3 cu ft, but this is enough for me.
My question is, should I replace the no longer working Cold Machine with the same size unit, which is rated for 7+ cu ft, or install a smaller unit, rated at 3-4 cu ft?
Which is more efficient- to have a larger compressor/evaporator that doesn't have to work as hard, or a smaller unit that will draw fewer amps while cycling, but I assume will have to cycle longer?
Any other considerations in sizing?
1977 C&C 30 Mk 1 hailing from Port Clinton, Ohio