I have 3.5t Lennox AC unit which is supposed to be more then adequate to cool down a house of 3200 sq.ft. With temperature outside hitting +32C, my AC having hard time to bring inside temperature to 25C. It is working non stop and still cannot do better then 25.5C.
I suspect that something is wrong, but not sure what it might be.
I would appreciate an advice on what I should check to troubleshoot.