Ed Pawlowski wrote in rec.food.cooking:

> On 6/10/2016 9:33 PM, cshenk wrote:
>
> >
> > I wish it were that simple, but no. The unit was installed about
> > 1976.
>
> That alone is a good reason to replace it with a more efficient unit.

Yes, but not before it dies. The price to run the old unit isnt but
$25 a month more. Thats 300$ a year. New unit, 10,000. 33 years pay
off.

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