Fughedit. For what you'd have to spend on things like a vacuum pump,
gages, brazing equipment. filling fittings and an online course/license
so you could legally handle refrigerants, you could buy three or four
brandy new window AC units.
Sometimes you just have to accept "disposable economy" things like that
and resist the temptation to try and fix them yourself. The unit you
have prolly cost you less than $15/year for the 15 years you've had it.
And a new model will save more in electricity than the cot of repair. I had
a couple of old window units and was glad to see them go. New ones, though
"cheaper constructed" are lighter and more efficient.
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