Why is my AC making a pulsating noise?
Is your air conditioning unit making a bizarre pulsating noise that is loud enough to be heard inside the house? If so, something could be loose, like the coil fan or the fan blade attached to the motor. If these possibilities are eliminated as the culprit, it could be that the actual fan motor is going out. The good news is that all of these fixes are relatively simple and inexpensive. Contact the Experts to make the correct diagnosis.