Why is my AC making a pulsating noise?
Is your air conditioning unit creating a strange 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 excluded as the culprit, it could be that the actual fan motor is malfunctioning. The good news is that all of these fixes are relatively simple and inexpensive. Contact the Experts to make the correct diagnosis.