Heating a van in Europe: diesel vs gas vs electric
Heat is what turns a fair-weather van into a year-round one. It's also where the biggest safety risk in van life lives — combustion in a small sealed space — and where condensation either gets managed or quietly rots your build. The choice between diesel, gas, electric and a wood burner shapes how off-grid you can go, what it costs to run, and how warm you'll actually be in an Alpine car park in February. Here's how the options compare, and how to stay safe and dry.
This is part of our systems series alongside electrics & power, water & waste and gas & LPG. Heating overlaps all three — most systems need some power, some need gas, and all need ventilation — so it's worth understanding before you commit to a build or buy a van.
The four ways to heat a van
Diesel air heaters
A small diesel heater draws fuel (from your main tank or a dedicated one) and air, burns it in a sealed chamber vented outside, and blows warm, dry air into the living space. They're frugal — a fraction of a litre an hour — run independently of LPG, and diesel is available everywhere, which is why they're the default for serious winter and off-grid use. The catch: they need 12V power for the fan and glow plug (a modest but real overnight battery draw), and they can struggle to burn cleanly at high altitude unless set to a high-altitude mode or fitted with a kit.
Gas heaters (Truma & blown-air)
Most coachbuilt motorhomes ship with a gas system — often a Truma Combi that does heating and hot water from one unit. Gas heat is clean, quiet and dry, and uses the same LPG you cook with. The trade-off is supply: refillable LPG availability and fittings vary across Europe (and it's scarce in Scandinavia), so you're managing bottles or a refillable tank — and in deep cold, butane stops vaporising, so you need propane. See our gas & LPG guide for the refill and bottle detail.
Electric heaters
A plug-in fan heater, or the electric element built into a Truma Combi, is simple and clean — but electric heating pulls 1–2 kW, which only a campsite hook-up (or a very large battery-and-solar setup) can sustain. Off-grid on battery alone, electric heating will flatten you in an hour. Treat it as a bonus for when you're plugged in, not a primary off-grid system. The power side is covered in our electrics & power guide.
Wood burners
A tiny stove gives gorgeous, dry radiant heat and cheap fuel, and it's a favourite in DIY camper builds. But it costs space, needs a proper insulated flue and heat shielding, produces ash, can't run while driving, and demands real care around clearances and carbon monoxide. Wonderful for a stationary winter base; more faff for a touring van.
At a glance
| Type | Off-grid | Running cost | Best for |
|---|---|---|---|
| Diesel air | Yes | Low — sips fuel, small 12V draw | Winter & serious off-grid; the all-rounder |
| Gas (Truma) | Yes | Low–medium — depends on LPG price/supply | Factory motorhomes; heat + hot water in one |
| Electric | No | Often free on a paid pitch | Campsite stays with hook-up |
| Wood burner | Yes | Very low fuel cost | Stationary winter base; the cosy aesthetic |
The safety bit you can't skip: carbon monoxide
Fit a carbon-monoxide alarm — and never heat with the hob
Any van with a combustion heater or a gas hob needs a carbon-monoxide alarm, fitted at the manufacturer's recommended height and tested regularly. CO is colourless and odourless and has killed people sleeping in vans. A properly installed diesel or gas heater vents its exhaust safely outside, but you must never use the cooker or hob to warm the living space — it dumps combustion products straight into the air you're breathing. Keep the exhaust clear, service combustion heaters, and never block fixed vents.
Condensation: heat without damp
The other quiet enemy is moisture. Cooking, breathing and drying wet gear pour litres of water vapour into the air; in a cold, sealed van that water condenses on every cold surface and breeds mould behind your panels. The fix isn't to seal up tighter — it's to combine heat with ventilation:
- Run dry blown-air heat (diesel or gas) and keep a roof vent or window cracked — a little airflow carries moisture out.
- Insulate windows with thermal blinds or covers, so warm, moist air doesn't hit cold glass and run with condensation.
- Cook with a lid on, and dry wet clothes outside the living space where you can.
- Don't rely on burning gas for heat in a closed van — open-flued and flueless appliances add water vapour as well as a CO risk.
Power, running costs & the cold
Diesel heaters are cheap to run on fuel but lean on your battery for the fan overnight — size your power accordingly. Gas running cost tracks the local LPG price and how easily you can refill, which is the real variable across Europe. Electric is effectively free once you've paid for a hook-up pitch but useless without one. Exact figures move with energy prices, so treat any number you read as a rough guide.
Winter and altitude change the rules
In hard cold, your heater is also keeping your water and pipes from freezing, so factor that into how long you run it. Switch gas bottles to propane for winter — butane barely vaporises near 0°C. And if you're heading high into the Alps, check whether your diesel heater needs a high-altitude setting or kit to keep burning cleanly. Our winter van life guide goes deeper on cold-weather living.
So which should you choose?
Quick guidance: if you want one system that handles real winter and goes anywhere off-grid, a diesel air heater is the safe default. If your van already has a Truma gas system, it's excellent — just get on top of LPG refilling for the countries you'll visit. If you mostly stay on campsites, electric on hook-up costs you nothing extra. And if you're building for a cosy stationary winter and love the ritual, a wood burner earns its space. Many full-timers end up with diesel heat plus an electric option for hook-up nights.
Plan the cold-weather trip around your van
Heading somewhere cold? WiseTrip routes by your van's real height, length and weight, flags the zones and tolls, and finds legal overnight stops — so you can focus on staying warm. Free, no account.
Plan your trip →The bottom line
Heating is the system that decides whether your van is a summer toy or a four-season home. Pick the source that matches how off-grid and how cold you'll be — diesel for independence, gas for the factory all-in-one, electric for hook-up comfort, wood for character — then make two things non-negotiable: a working carbon-monoxide alarm, and ventilation to keep the air dry. Get those right and a winter night in the van is one of the best parts of the whole thing.
Appliance specifications, fuel prices and LPG availability change over time and by country — confirm current details with manufacturers and suppliers, and follow the installation and safety instructions for your specific heater. This guide is general information, not a substitute for professional fitting advice.
Recommended gear · sponsored
WiseTrip may earn a commission from purchases made through this link, at no extra cost to you.