On our 2499TT The cord storage compartment is a concern for me. Camping all last winter in some below zero temperatures, we used to fight over who had to sit on the couch. There always felt like a cold draft was blowing across your feet.
I was working on the compartment under the couch and figured out why that draft blows so cold.
That compartment that holds the cord, is basically open to the outside and allows cold air to flow freely into the coach. No wonder why my feet were always numb!!
So I cut a few pieces of insulation board and glued them around the compartment. I also made a piece that fits along the top of this little compartment that I stapled to the board that covers the heater and water heater. While I had the insulation board out, I cut a few pieces to fit the back of the kick board under the couch so any cool air that might get into this compartment might be trapped under there rather then allowed to circulate freely around the floor of the coach.
This only took a few minutes, and a 4'x8' sheet only costs around $15. I'll let you know once the temperatures drop whether this helped or not. But something tells me it might stop the drafts.