I know this is an old unit, but it does still cool. The problem is that it cools for about 1 1/2 hrs to 2 hours and then the condenser stops and the fan continues blowing room temperature air. After I turn it off for about 2 hours, I can turn it on and it will cool again for a limited time. The condenser makes an attempt to start but it stops. If it could keep running, it would cool. Has new contactors, capacitor and thermostat.