Our ac cond fan doesn't start at times and the unit humms and gets hot I can turn the fan with a screwdriver and spins fine so its not froze up or hard to turn. When I spin the blade it continues to spin slowly,other times like tonight it starts up and runs fine last night it didn't

You might try replacing the motor run capacitor with the like same value. If that does not work you will be buying a new motor and a new capacitor that matches the new motor.