It could be coming from the AC compressor. However, what I recommend is to remove the serp belt and spin all belt driven accessories to see if any are making noise or seem to have play or drag. Do that and let me know what you find.
However, if the noise started after the repairs, I would think the noise if coming from something that was replaced.
Do this and let me know what you find.
Sunday, October 26th, 2014 AT 7:47 PM