The thing that sucks is I can hear what is making the noise in the compressor, and as far as I know it’s something loose, not normal operating sounds. The compressor housing is a welded ball of metal, there is no way to open or maintain it. I was so frustrated when I realized the sound was the compressor. I was praying the compressor wasn’t mounted properly, or was mounted without isolation pads, etc... but nope I got down there and put my ear on it (damn near burned myself) and waddaya know it’s coming from inside the welded ball.