Originally Posted by Capt.Bill11
The coating is for more than the contact points. It acts as insulation for both noise and temperature.
Ironically the whole system is quieter now and blows more air to boot!
I think the detail I took on reassembly of the cage and seawater coil with contact point insulation etc. seemed to help. The Cage seems of thicker steel too which dampens some. This squirrel is Whisper quiet!
On the other insulation issue, I'm not sure 1/16" of "dressing" makes a whole lot of difference. It's a 12K unit in a relatively small boat. Cycled on and off nicely today with smooth start-up and my new Honeywell Home type thermostat held temps perfectly. It used to be quite loud on start-up. ..Job done for just a few bucks, Happy camper here!