i live in N. Alabama where the humidity is off the charts and temp. has been 95-97 degrees. The techs around here say the units for our area are designed for 95 degrees. It will get hotter especially in August when it is consistently 97 or 98 degrees. I leave my setpoint on 73 and the temp rises through out the day from about 2 to 4 degrees above setpoint. On these days my uniy runs consistently for about 14-16 hours straight until it shuts off a night, is this normal? i have been told on days like today it is but others say no. I have a 1900 sq. foot home and a 3-ton unit.