AC works but not to optimum. In the morning when it's relatively cool (70's) it blows 40 degree air. But in the late afternoon when it's in the 90's it only blows in the 60's?? I have check the refrigerant and have recharged it to specs. What else can I do?
Are both condenser fans working? Stupid heater hot water valve can lose the oring on its internal butterfly...Are both heater hoses hot (only one should be hot)?
I will check it this weekend.
Simple things like filters and/or blocked air ducts maybe..?
Check the fresh air filter, ours gets gummed up when it gets wet and runs in dust.