Gas-free motorhomes: living without LPG through a UK winter is possible but not simple

A gas bottle has quietly done four jobs in motorhomes for decades: it heats the van, it heats the water, it cooks the dinner and, in most coachbuilts, it keeps the fridge cold. Now a growing number of makers are building vans with no gas on board at all. That is a big change, and the question for a British buyer is not whether it works in August. It is whether it works in January, on a pitch in Northumberland, with the sun gone by four.

Who is building gas-free, and why

promobil counts eight gas-free motorhomes in its October 2026 round-up, several of them shown at Caravan Salon Düsseldorf 2026, which ran from 28 August to 6 September. The list, according to promobil, is the Atlantis Carbon 4x4 (carbon-fibre body, diesel heating), the Bürstner Habiton (Sprinter-based), the Concorde Centurion 1100 GI (optionally gas-free, €715,000), the La Strada Avanti F (induction hob), the Morelo Home, the Offtrack Verge (induction hob and compressor fridge), the Phoenix Maxi 7800 RSL (diesel heating, induction hob and compressor fridge) and the Vario Mobil Perfect and Star, gas-free since 2025 with large battery capacities. promobil also names two concepts, the Dethleffs c.core and EVOLVE.

Two things stand out from that list. First, a good share of it sits at the very top of the market, where a large battery bank is a small line on a very long invoice. Second, the idea is now filtering into mainstream names like Bürstner and Dethleffs, which is why the word "trend" is fair. One caution before you get excited about any specific model: check with the maker or importer whether it is sold in the UK, and in right-hand drive, and treat the list as a direction of travel rather than a shopping list.

promobil's reasons are safety (while noting that gas accidents are extremely rare), no heavy bottles to carry or refills to hunt for abroad, more storage without a gas locker, and the pull of renewable energy. On Facebook, owners weighing up converted vans with underslung LPG tanks are asking what the alternatives are. An Instagram post makes the point that LPG is getting harder to find in the UK. Whether going gas-free is the better answer is worth testing properly, because the UK winter is where it either holds or falls apart.

promobil's caveats are that induction needs 230 V and a lot of electricity, so a big battery plus solar or a generator; that electric heating is still in its infancy for winter use; that most makers rely on diesel heating, which needs fuel and produces emissions; and that batteries cost more. Keep those four points in mind. Everything below is really an expansion of them.

What gas does in a typical motorhome

Before judging the replacements, it helps to be clear about what the bottle in the locker is doing. In a conventional British or European motorhome it does four jobs, and they are not equally hard to replace.

Heating

Most coachbuilts and van conversions use a gas-fired blown-air or warm-water heater. Many of those units also have a mains electric element for use on hook-up, which is why a lot of UK winter campers already heat on electricity when they are plugged in and only burn gas when they are not. Heating is by far the biggest energy demand in winter, and it is the job that decides whether gas-free is realistic.

Hot water

Hot water usually comes from the same combined heater, so it rises and falls with the heating question. A shower on a cold morning is a surprisingly large chunk of energy whichever fuel supplies it.

Cooking

The gas hob is the appliance most people picture. It is instant, it works with no electrical system at all, and a bottle lasts a long time if cooking is all it does. It is also the easiest job to move to electricity when you are on hook-up, and the hardest when you are not.

The fridge

Many coachbuilts use a three-way absorption fridge that runs on gas when parked off-grid, on 12 V when driving and on mains when plugged in. Panel van conversions increasingly use a 12 V compressor fridge instead, which needs no gas at all. This is the job that has already gone electric in much of the market without anyone calling it a trend.

What replaces each job in a gas-free van

promobil's example spec is the Niesmann+Bischoff iSmove for 2027: a full induction hob, lithium capacity of up to 600 Ah (300 Ah in the basic lithium package), an inverter of up to 3,000 VA, up to 660 W of solar, an Alde 4000 D Plus diesel heating option, and a lithium package priced at €9,910. The iSmove only goes fully gas-free with those options fitted, because its standard heater is a Truma CombiNeo 6 E that can run on gas, but the list shows the whole recipe, so it makes a good worked example.

Heating and hot water: diesel takes over

As promobil notes, most gas-free makers lean on diesel heating rather than electric heating for winter. A diesel heater draws from the vehicle's own fuel, so every fill of the tank is also a fill of the heating. That is the single biggest practical advantage over gas for a UK driver: there is no second fuel to source, no bottle to swap and no autogas pump to find. The iSmove's option is an Alde unit, and Alde is best known for warm-water heating that uses radiators rather than blown air, which many owners find gives a more even warmth in cold weather. The costs are the ones promobil points to: diesel heating still burns fuel and still produces emissions, and it is a combustion appliance with an exhaust, so a carbon monoxide alarm is as necessary as it ever was with gas.

Electric heating: not yet a winter answer off-grid

promobil's verdict that electric heating is still in its infancy for winter use matches common sense. Heating a cold box on wheels from a battery is the most demanding thing you can ask of it, which is why even the gas-free flagships pair their big batteries with a diesel heater. On a campsite with hook-up, electric heating is a different story, and it is how plenty of UK winter campers already keep warm. Off-grid, in December, treat battery-only heating as a feature for mild evenings rather than a plan.

Cooking: induction needs 230 V and serious storage

An induction hob runs on 230 V mains. Away from a hook-up pillar, that mains supply comes from an inverter drawing on the leisure battery, which is why the iSmove pairs its hob with an inverter of up to 3,000 VA and a lithium bank that starts at 300 Ah and can be doubled to 600 Ah. The inverter rating sets a ceiling on what you can run at once; the battery capacity sets how long you can keep doing it. gn-espace frames gas-free cooking as cutting fossil fuels out of the kitchen when the van's power comes from solar, shore power or similar. The catch is that in a British winter the solar part of that sentence does most of its work in May, not in January.

The fridge: compressor units are the easy win

A compressor fridge runs on 12 V and does not care whether the van is level, which absorption fridges do. It draws on the battery day and night, but it is a well-proven piece of kit and, in winter, a cold van does half the fridge's work for it. Of the four jobs, this is the one where going gas-free costs you nothing in convenience.

The UK winter test: short days, weak solar, hook-up

Here is the part the Düsseldorf show stands do not have to think about. In late December most of the UK gets fewer than eight hours of daylight, the sun sits low, and the sky is often overcast. A roof full of solar panels is at its weakest in exactly the weeks when heating, lighting and hot water demand is at its highest. Even 660 W of panels, the maximum promobil quotes for the iSmove, is a summer number in practice; in winter it is a top-up, not a supply.

So a gas-free van in a British winter leans on one of three things.

• Driving. The engine charges the leisure battery as you travel, and the diesel heater draws straight from the tank. A van that moves most days is well suited to gas-free living.
• Hook-up. On a mains pillar the battery becomes a buffer rather than the source, the induction hob runs from the site rather than the inverter, and electric heating becomes practical. Many UK club and commercial sites stay open through winter with hook-up, which is why this is the realistic route for most people. Pillars have a current limit, though, so ask the site what its supply is rated at, and do not expect to run the hob, a fan heater and a kettle at the same moment without tripping it.
• A generator. promobil lists it as the alternative to solar for feeding an induction hob. It works, but it is noisy, it is another fuel-burning machine, and most UK sites do not welcome it.

What falls out of that list is the scenario a gas-free van struggles with: parked up off-grid for days on end in cold weather, not driving, with no hook-up. That is precisely where a gas bottle shines, because it stores a lot of energy in a dumb steel cylinder and asks nothing of your battery. A thread on wildcamping.co.uk about a supermarket refusing to fill LPG includes the view that gas still has its place for full-timers and for people who use their van a lot but do not drive much, especially in the winter months. That view holds up, and the thread itself is a reminder that refillable LPG users can find filling points harder to rely on.

A gas-free van rewards people who move or plug in. It punishes people who sit still in the cold.

What it costs, and what it weighs

Money

The clearest published number is the iSmove's lithium package at €9,910, as quoted by promobil. At the other end of the list, the Concorde Centurion 1100 GI's gas-free spec is an option on a vehicle that starts at €715,000, which tells you where this technology has been living until now. German list prices include 19 per cent VAT; the UK figure for any model that does come here will include 20 per cent VAT and will differ for specification and exchange rate reasons rather than tax. If you ever looked at importing one yourself, the preferential duty rate under the UK-EU trade agreement is 0 per cent for vehicles of EU origin with an origin declaration from the maker, and import VAT at 20 per cent is charged on the vehicle price plus delivery plus any duty.

Running costs are harder to pin down, because they depend so much on how you use the van. Diesel heating moves the heating bill into the fuel bill, so it is paid at the pump. On site, cooking and much of the heating run on the pillar's electricity, so check whether the pitch fee includes it or whether electricity is charged separately. What you save is bottle rental, exchange trips and the occasional long drive to a working autogas pump. What you spend is the battery, the inverter and, eventually, a battery replacement, because promobil is right that batteries cost more.

Weight

Gas-free is not automatically lighter. You lose two steel cylinders, the locker and the pipework, and you gain a large lithium bank, an inverter and a bigger charging system. Which side wins depends on the exact build, so read the maker's own spec table rather than guessing: look for the mass in running order, how it is defined (a 75 kg driver, fuel at 90 per cent and whatever water and gas the maker counts), and the payload left over once the lithium option is added. Type-approval rules allow the actual running-order mass of a motor caravan to differ from the declared figure by up to plus or minus 5 per cent, so a van that looks tight on paper can be tighter still on a weighbridge.

Licensing matters here too, because several vehicles on promobil's list are large liners. Where a motorhome's maximum authorised mass is over 3,500 kg, a driver who passed the car test on or after 1 January 1997 needs category C1, gained by applying for provisional entitlement with a D4 medical, then passing a theory and practical test in a suitably heavy vehicle. Drivers who passed before 1 January 1997 hold C1 as an acquired right until their 70th birthday. C1 stops at 7,500 kg, though, and the biggest liners need a full category C licence whenever you passed: promobil gives the Concorde Centurion 1100 GI a maximum mass of 18 tonnes. Note that the newer 4,250 kg allowance on a category B licence in Great Britain applies to zero-emission vehicles only; a gas-free van with a diesel engine and a diesel heater does not qualify.

The halfway house: keeping a little gas

Plenty of owners will land somewhere in the middle: electric fridge, diesel heating, but a small gas hob for off-grid cooking because it is simple and it works when the battery is low. The industry is quietly supporting that choice. Truma says its new MonoControl CS R, a crash-sensor regulator for Campingaz R 904 and R 907 bottles, reaches dealers in early 2027.

vantour.net puts it simply: yes, you can live in a van or motorhome without a single gas bottle. Fair enough, but the halfway house has its own logic. One small bottle that runs a hob and nothing else lasts a very long time, carries little weight, and gives you a cooked meal on the day the inverter decides not to play. Whether that is worth a small gas locker is a personal call.

Who should go gas-free, and who should not

It makes sense if

• You tour rather than park: a van that drives most days keeps its battery charged and its diesel heater fed without any thought.
• You use hook-up most nights, especially in winter, where an induction hob and electric heating are no harder to live with than at home.
• You travel abroad often and are tired of adapters, exchange schemes and bottles that do not fit.
• You value the storage: a gas locker in a van conversion is a big cupboard by any other name.
• You are buying new, at a budget where the lithium package is a sensible fraction of the price rather than a shock.

Think twice if

• You spend winter weeks off-grid without moving. This is the one case where a gas bottle still beats every alternative on the market.
• Your budget is tight. The battery and inverter are the expensive part, and they are the part that wears out.
• You already own a sound gas-equipped van. Converting to gas-free is a major electrical rebuild, not a swap of appliances, and the money is usually better spent elsewhere.
• You want the simplest possible system to look after. A gas hob has no electronics to fail.

Questions to ask before you buy a gas-free motorhome

1. What is the battery capacity, in the standard package and at the top option? On the iSmove, lithium is a €9,910 option that starts at 300 Ah and can grow to 600 Ah, which shows how wide that gap can be. Ask for the chemistry and the warranty terms in writing.
2. What is the inverter rated at? This decides whether you can cook and charge a laptop at the same time off-grid.
3. How does the heater behave on hook-up? Does it switch to mains, or does it keep burning diesel while you are plugged in?
4. How is the battery charged while driving? Ask what the alternator charging system is and how long a typical drive takes to refill the bank.
5. What are the weights? Mass in running order, what it includes, payload after the battery option, and the plated MAM against your licence.
6. Is this model available in the UK, in right-hand drive, and when? For the vehicles on promobil's list, get the answer from the maker or importer rather than assuming.
7. Is there a carbon monoxide alarm fitted? Gas-free does not mean combustion-free while a diesel heater is on board.

The bottom line

Gas-free motorhomes are real, they are multiplying, and the recipe is now settled: diesel for heat and hot water, induction for cooking, a compressor fridge, and a large lithium bank with an inverter to hold it all together. In a UK winter that recipe works well for people who drive regularly or plug in regularly, and it removes a whole category of chores. It works badly for anyone who likes to park on a cold hillside for a week without moving, because solar cannot carry that load in December and electric heating is not ready to. If that is you, keep a bottle. If it is not, the gas locker may soon be the emptiest cupboard in your van.