"HvacTech2" wrote in message
...

L if your AC is working fine other parts of the day, its not likely
there
L is anything wrong with it.

This statement is totally wrong. there are several ways an a/c can fail
and
only partially cool

No, that statement is totally true. If the AC cools the house some of the
time, but not when the sun is high in the sky, then the house isn't very
well insulated. While it's true it could be insulation, a duct come undone,
leaky windows or what have you, none of those mean there is anything wrong
with the AC. I still believe that if it works and cools well some of the
time, some other factors must be coming into play later in the day that the
AC simply can't keep up with.

Or, the damn thing is busted. Hard to say over the net.