I'd be tempted to use an ammeter, to see what the running current is. That
could give you some "hard data" to go on. I do know that old compressors use
more power, as they grow older.

Anecdotal evidence. I got a newer fridge, the old one was here when I moved
in, late 1994. My electric bill dropped about ten bucks a month.

Christopher A. Young
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..

"Art Todesco" wrote in message
...
I have an approximately 38 year old upright freezer. It is working
perfectly. I know door gasket is not as good at it could be, however,
it seems to close pretty tight. It can be real hard to open a 2nd time
after looking for something. But I know there are a lot of square feet
which are acted upon by a very small vacuum. Also, if the unit is not
running, like after a defrost, the magnets in the door gasket are pretty
weak. Anyway, to the question. In your opinions, would it be
advantageous to replace it for a new more efficient unit? How long do
you think it would take it to pay off? BTW, this freezer has survived
being powered off for 4 months and moved 700 miles, approximately 3
years ago. It is a little noisy, but it's been that way for 38 year,
except now it is in a place were I can hear it more.