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AC thermostat does not control AC. AC runs continuously. Have to shut system off to stop AC.

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Are you using the old coventional thermostat? using mercury

or was it digital?

chances are the reason it is not stopping because it can not detect the right temp inside your house, if you have set this for example 74F AC would run continouisly until it reaches that right temp, until that time, it would surely not stop,

check for any windows, door that might cause some air leaks inside your house for a start, close all exhaust fan and see if you can see any difference, if not this might be the right time to change for a digital temp control, it not that expensive and easy to install

Posted on Jul 25, 2008

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