Every time my air conditioner comes on it squeaks. Can someone let me know why and the easiest and cheapest way to fix it thanks!! :confused:

Probably the fan motor if the outdoor unit or blower motor in on inside unit. Many motors will have an oil ports. Lift the cap on the port and add oil. If this doesn't help will have to replace the motor. Oiling the motor should be a part of routine service. Should you have an older model unit it could be a belt squealing on the blower motor.