Well, I bought a new ac. Got brothers to change it out for me. Now they got it wired up just like the old one was (and the next to worthless instructions call for) and it runs great except it never blows cold. Apparently the compressor never comes on. The guy at the shop where I bought the ac said my old thermostat should be fine but do you think it is the problem? Currently they have the electrical box hanging down waiting for it to test good before buttoning it up so the thermistor is plugged in but not attached to the compressor coil. Any chance this could be the problem? I can't get to it to test it so I'm trying to get an idea what they will need to do tomorrow. Help?