Journey39n,
Great tip. I think what I will do next time it's predicted to get down to 50-60 at night is to stay ahead of it. If the inside temp is 74 degrees before we go to bed, I will set the heat pump to like 68-70 this way it's all set and kick in when needed.
So only one compressor will kick in if you try to cool the coach down 1-2 degrees? I did not know that.