Mitch I was at an older park in New Mexico for two days and the AC ran continuously. I didn't notice it until we got to another park - it was running but NOT blowing cold air. I rely on the surge protector to protect my rig from big surges like in a lightening storm, etc. Was at a park in New Mexico and we had a big lightening storm and lightening hit the transformer in the park. There were two big Class A's; one with a surge protector and one without. The one with only fried their surge protector; the other without the surge protector fried all his inside electronics.
For everyday monitoring I love my little plugin voltage meter.