I have psoted ob here several times with the same problem. This start in the early spring of 2004. I have a one story ranch style house that is abotu 1,972 sq. feet. when the temp. hits 90 plus outside my thermostat goes up 5 and 6 degrees above setpoint and it use to not do that. some people on here that have tried to help, I dont know if they live up north or what but I need someone that understands the weather in the south with all the humidity. Nothing has changed with my house, AI have lived here for 4 summers and the first two didnt do this. I use to leave my setpoint on 72 when I would leave for work in the morning and when I would get back it would be held on 72 during the hottest part of the day in the middle of august! I do not have a false memory, I have a digital thermo. and know exactly what it was set on and besides july and august weather in the south is always the same! I have called tech after tech and finally one of them thinks it might be an airflow problem and did some tinkering to the unit but it is still doing it. Everything is charged correctly no dirty coils or filters.
need help please!