I returned to our clients home because she had a concern about the outdoor unit making a loud noise. When I first arrived at the property, I immediately proceeded outside to ensure everything was still in its proper place. I did ensure that all the screws and bolts were tight on the motor. I then proceeded to test the unit by turning it on and off several times to try and replicate the noise that our client was hearing. I proceeded inside and went to the upstairs bedroom because that is where our client was hearing the noise from. I spoke with her on the phone and we both agreed that the initial start up of the outdoor fan was normal she said that the main noise was coming from when the unit shut down. I listen from the upstairs bedroom and shut the unit down two times after letting it run for several minutes. I could not hear any noise and our client was satisfied over the phone that the noise was normal. She was not home to confirm that the noise had been resolved. The unit is cool