Vanlifemag.de has published a free calculator that determines the dew point, wall surface temperature and heat loss for a given camper van wall build-up. The tool also estimates the heating power needed to maintain a set indoor temperature. Calculations use a simplified steady-state model and do not account for wind, sun, moisture transport or thermal storage. For a 6-metre panel van with 19 mm rubber insulation and 15% uninsulated ribs, about 1,800 W is required to hold 20 °C at 0 °C outside, and about 2,600 W at minus 10 °C. The data is dated November 2026.
