After 19 years of almost continuous running, it appears that it is time to replace the original Adler Barbour Cold Machine.  We noticed last spring that the compressor was beginning to draw more than usual, which our technician said was indicative of the bearings getting old.  Then, just now, having had to turn the system off for out of water servicing of the boat and dealing with this hurricane season, it would not cool.  The technician had to recharge the system after his "snifter" detected a leak.  It did cool the box down quickly and is currently maintaining about 35 degrees with the box empty.  The technician suggested we consider replacement before our cruising season begins.  Apparently, the newer generation compressors are much more efficient in amp usage and there are many options available at a cost less than the Adler Barbour.  One requirement is that it has a box evaporator to make ice and hold frozen foods. The original system worked quite well in that regard.  We do not want a vertical ice tray system either.  I have looked at Isotherm through Defender.  With the age of our boats,  I am sure some of you have had to address this issue.  Any recommendations/suggestions would be appreciated.