Gee.. With my Dometic when I saw the temps were going to hit "Below teens) 11 was delivered) I jumpered across the light switch and ..> Everything was good.
Some RV type have a switch labeled LAT (mine does not) What does it do.. Read the first paragraph.. That's what it does.. I am going to add one.
On the residential.. If it were that cold, I think I'd block the lower vents on the outside.. This SHOULD help... (Assuming they are not already closed off) a simple sheet of corrugated paper should do it (What most folks improperly call card board.. Card board is what Greeting cards are made of.. Corrugated paper is what storage and shipping boxes are made of).
