Our AC is not working properly. It is almost like it is power surging.The AC motor will kick on but it is like there is not enough power for it to kick on the blower. When it does kick on the blower, sometimes the blower will power down and then stop but the motor is still running like it is trying to power the blower again and then it will kick the blower on again. And sometimes the AC will kick off completely like it has reached the correct temp from the thermostat, but it hasn't. Had AC serviced and they couldn't find anything wrong with it. They said to check the thermostat and it might need to be replaced. THey didn't check our thermostat for us.

Brand and EXACT model of furnace/air handler?