Poor AC Performance - Bad TXV??
Background---I had a Bryant system installed in June 2009 in a 45 year old 1000 sq. ft. rent house that probably is poorly insulated:
We had a pretty cool summer last year and never heard of any problems, but it's hot this year :)
On the 100 deg. days the system struggles to keep below 80 deg. Had it serviced by the installer, who first cleaned condenser coil and claimed it was working properly. Wrong. 2nd visit has diagnosed a bad thermal expansion valve. I'm wondering if that seems reasonable, given the problem. The system always "cools", just not enough in the hot hot weather. Is a bad TXV easy enough to diagnose if I have another tech come out??