On Tue, 7 Jun 2011 10:53:36 -0700 (PDT),
wrote:

On May 30, 9:53Â*pm, WandererFan wrote:
Was the tech correct, or just trying to earn a commission?

If the refrigerant's low, it's LEAKING.

A licensed pro can't legally top off a refrigeration system with a
known leak. If the EPA gets wind of it he'd face fines and would
probably lose his license.

Odds are a leak would require the replacement of one or more major
components. Once you start replacing major components on a unit that
old, you are better off in the long run to simply replace it. You will
be chasing problem after problem if you try to fix it.
You'd be surprised how many AC leaks are bad fill valves, or on
automotive AC, bad "O" rings. Minor components can leak as much as
major components.