Running mine on propane always kept it cooler for me (as others have said). We always take a couple one gallon jugs of drinking water with us camping. We save the bottles and freeze them. We put a few in the fridge when we are getting ready for a trip and cooling it down, and it helped tremendously. I also would keep on or two in there while on the road. (Of course this was in a pop up camper) still new to the TT world. But the principles should be the same. Without doing this it would take about 2-3 days to get to a good temp. This cut it down to about 12 hours.