I removed the large gas heater (also gas supply, flue etc.) from my 1998 Triton430 (bought 2015) and fitted a baby 500watt electric convector heater in its place (replacing the existing front cover), also fitted a similar electric convector under the small table at the front of the van (£15 each from Amazon eg:Warmlite 450w). They have their own thermostat but I leave them set on high and I fitted a Honeywell room thermostat on the wall for control. In view of the excellent insulation of the Eriba and its compact size, we only need one convector in cold weather - besides my boxer dog sleeps under the small table! We always have a mains hook-up on camp sites. Simple job for a service outfit. PS: this is my first forum message - hope I hav'nt broken any rules . . . . PhilipG