Tested out the winter modifications in a windy 19 degrees Fahrenheit day. Using only the Propex heater, after 4 hours, I was able to get it warmed up to 48 degrees.
I find it still a little too cold so planning on the following upgrades:
1. install insulation inside corner cubbies top and bottom, as well as in the closet,
2. Making some reflectix window covers,
I also found out my propex heater exhausts condensation found its way into the
propane box, making everything wet. Apparently, the hot water vapor is able to up travel through the floor vents.
Back to the drawing board:
Will install a thick aluminum tube to run exhaust through to work as a heat sink and capture as much heat as possible while directing the water vapor elsewhere. I am using exhaust gases to warm up my LiPo batter and LP boxs.
I must say, I am impressed by the Propex hs2200 performance. It's
battery usage is quite negligible.
Will report on the winter upgrade's performance when it's all installed.
I did also notice that the interior furniture and appliances were retaining a lot of the cold. I'm sure. given a few more hours, those surfaces would have warmed up considerably.