Heating
A modern, well-insulated leisure vehicle and a decent duvet or sleeping bag will keep you snug in all but the most extreme conditions overnight, so you’ll rarely need overnight heating. Modern caravans and coachbuilt motorhomes tend to be very well insulated and have efficient heaters, although you might want to use insulated covers on the cab windows of a motorhome to reduce heat loss.
Campervans and van conversion motorhomes can be more problematic – not all have as much insulation and single-glazed glass windows in the cab and sometimes the rear doors tend to let heat out.
Which heating system do I need?
Heating systems vary. The wet central heating systems found on many higher-specification caravans and motorhomes are ideal but the blown air heaters on most others will still do the job. If some extra warmth is necessary, a small, thermostatically-controlled fan heater is fine if on mains hook-up (1kW should be enough) and can also provide reasonably rapid boost heating – ideal for first thing in the morning!
Heaters will use quite a lot of gas and battery power (for control systems, fans and circulation pumps). Make sure you have sufficient gas and battery charge if you're planning to stay somewhere without mains electricity. Most systems run off gas or mains electric though, and the latter is more convenient in the winter. Some smaller campervans use diesel heaters similar to those often fitted to truck cabs.
With gas or diesel heating, you must make sure the flue is not at risk of blockage by snow or wind-blown rubbish, especially if you do want to run the heating overnight.
Heating which can be programmed through a timer (or even a mobile phone app) to provide warmth when you get in in the evening, before you go to bed and best of all, before you get up is really useful.