"GigDaddy" wrote in message
...
My 9 year old goodman ac quit working over the weekend. Had a friend
that knows a little about ac look at it. He said that the run
capacitor for the compressor was bad. The one that was in there was
rated at 35 micro farads. He put in a 45 micro farad one and said that
there would not be a problem. The system runs now but the different
size capacitor has me concerned. Will this cause a problem or not?

Thanks,

45 is too big. Rule of thumb is "within 10%", thus in this case nothing
but a 35 will do.
If a capacitor is oversized, then too much voltage may develop across
it, exceeding its voltage rating and causing premature failure. Also the
start winding is not designed for the extra current that bigger
capacitor will send through it.

Richard Perry