[Irv]

We are staying in (not air tight) skirted 2017, 3730FL RV at Rambling Pines RV park (Middle of MD) with temps from high teens at night to low 30s in the day. We conducted a study regarding the temps of the basement, skirted area and interior as a function of outside temp. The basement temp probes were situated near the DS wheels away from the basement furnace duct. The skirting is exterior sheeting (picture attached) which I recommend since it is easy to work, inexpensive and durable for the time we needed it, 6mo. We also added insulation under the slide outs, picture attached. The data is as follows: the outside temp (OT) is typically 10F less than the skirting (ST) and another 10F less than the basement (BT). That is OT=20F, ST= 30F & BT= 40F. Also, the BT was never <40F through the study. Never used tank heaters. Interior temps were 72F. Other note worthy points: We have a 100 gal propane tank and use ~3.5 gal/day. The humidity in the RV is typically 30%, lower than the target, 50%. The concern is where cold air and warm air mix, e.g. under the bed if there is an outside door, producing condensate, water. This would support mold and mildew because during the day the temp was 54F under the bed. It is important to open the space under the bed and air it out every few days. Use WD40 on the lock cylinders and 3-1 oil on the latches for that outside door as well since the water will freeze these parts. Hope this helps and interested in others experiences.