as well as smoke detector also test your carbon monoxide detector it's the silent killerI hope this doesn't sound condescending but please be careful with Fan Heaters in a small place like a Motorhome, especially if left on at night. They produce a fair amount of concentrated heat and if placed close to soft furnishings or the heater is accidentally covered with Bedding etc it could pose a Fire Risk.
Far safer to use an electric oil filled radiator. The disadvantage is that they are heavier & a little larger but don't dry your eyeballs out !
Probably a good time to mention about checking your smoke alarm batteries with the advent of colder weather & the associated increase in use of heaters. That's Van's as well as homes.
and if you don't have one get out and spent twelve pounds on one :thumb: