WE ALL DO!
I learned this the hard way when our A/C went down. It is an older unit, so will eventually need replacing...
BUT we had someone out to look at it, they told us we need a brand new unit...even sent ANOTHER sales guy out to consult! Wasn't that nice of them?!?
Fortunately, I have a skeptical Dad who told me to call to get someone else to look at it. You never know.
On Further Review...burnt wire. Under $150 to fix! The first company didn't even open the motor box to check it out.
PRAISE THE LORD!!! For second Chances, AND Second Opinions!