"ransley" wrote

Get a Kill A Watt meter and find out what it costs to run, those old
units were energy hogs, You might get a 2 yr payback on a new unit.

Extremely doubtful. Yes newer ones are more efficient but not that
radically so when new units of that size are 700$ and up. She's much better
off just banking the food savings money until it eventually needs more freon
(which she wont be able to get for the older unit nor is it cost effective
to try to adapt them). She's probably getting 40$ a year electric more for
it vice a newer model. I know. I had one like it. It will take 17 YEARS
to pay off at that rate.