My installer got me some of those split post compressor grommets that I learned about here. They helped quite a bit with the noise, so thanks to the pros who recommended them. While putting them in, I noticed that my compressor was cool to the touch, cool enough to cause condensation under the sound blanket. It was cool top and bottom. It's a two stage Carrier condenser with Puron. Is this normal? I wonder since the compressors on my refrigerators are quite warm. It seems to work fine though.