Campervan heating choices diesel gas and electric

Quick Answer: Which Campervan Heater is Best?

• Diesel: The best for off-grid touring. It draws fuel directly from the vehicle tank, offering high energy density and global fuel availability.
• Gas (LPG): A quiet option. Ideal for those who already use gas for cooking. Systems must be installed to professional standards to ensure safety.
• Electric: Perfect for campsite hook-ups (EHU). It is silent and emission-free at the point of use but requires a 230V connection.
• Safety: All combustion heaters must be room-sealed. A certified Carbon Monoxide (CO) alarm is essential for safety.

Choosing the right heating system is the difference between a seasonal vehicle and a true all-weather home. Whether you are browsing popular campervan makes or planning a bespoke build, understanding the trade-offs between diesel, gas, and electric power is essential for comfort and safety in the UK climate. The choice of heating impacts your storage space, your weight limits, and your ability to camp away from traditional infrastructure.

1. Diesel Heating: The Off-Grid Specialist

Diesel heaters, such as those from Webasto or Eberspächer, are the standard for independent travel. By tapping directly into the vehicle's main fuel tank, they eliminate the need to carry multiple gas bottles or hunt for specific LPG connectors while touring abroad. Many campervan layouts now prioritise diesel heating to save internal cupboard space, as the heater unit itself is often mounted externally under the chassis.

• Pros: High heat output; fuel is available at every petrol station; no heavy gas bottles to swap; saves internal storage space.
• Cons: Can be noisy during the startup cycle; requires 12V battery power for the fan and glow plug; requires periodic maintenance to prevent carbon buildup.
• Best for: Winter explorers and those using the campervan conversion checker to plan a self-sufficient build.

Diesel heaters work by drawing air from the cabin, passing it over a heat exchanger, and blowing it back into the living area. The combustion process is entirely separate, with its own intake and exhaust located outside the vehicle. This ensures that no fumes enter the living space, provided the system is maintained correctly. For those looking at used campervans, it is important to check the installation date and service history of these units.

2. Gas Heating (LPG): The Silent Performer

Gas systems, like the Truma Combi units found in many modern leisure vehicles, provide a very clean, dry heat. These systems are typically quieter than diesel alternatives, making them a favourite for light sleepers. You can choose between replaceable cylinders (like Calor) or refillable underslung tanks which can be topped up at LPG pumps.

• Pros: Near-silent operation; instant heat; often provides hot water simultaneously in 'Combi' models.
• Cons: LPG availability can vary by region; bottles take up internal space; requires regular safety inspections.
• Best for: Families and those who prefer a quiet night's sleep on established campsites.

When considering a gas system, it is vital to account for the weight of the gas bottles. Using a motorhome weight checker can help you determine if adding a large underslung LPG tank will push your vehicle over its legal limit. Many specialist dealers can advise on the best tank placement to maintain vehicle balance and safety.

3. Electric Heating: The Campsite Companion

Electric heating is almost exclusively used when connected to a 230V mains hook-up. While some high-end lithium battery systems can run small heaters via an inverter, it is generally inefficient for long-term use without a plug-in point. Many manufacturers recommend dual-fuel systems that include an electric element for when you are on-site, allowing you to save your gas or diesel for when you are truly off-grid.

• Pros: Silent; no internal emissions; cost-effective if electricity is included in your pitch fee.
• Cons: Useless for wild camping; can trip campsite breakers if the wattage is too high for the pitch (typically 10A or 16A).
• Best for: Occasional campers who stick to holiday parks with full facilities.

If you are searching for a vehicle with integrated electric heating, you can search campervans on our platform to filter for models with 'EHU' capabilities. Electric heaters are often built into the main blown-air system, meaning you use the same vents regardless of the power source.

Comparison Table: Heating Systems at a Glance

Safety, Regulations, and Compliance

Safety is paramount when heating an enclosed leisure vehicle. According to the NCC (National Caravan Council), users must never use portable gas heaters indoors due to the risk of carbon monoxide poisoning and oxygen depletion. These portable units are not room-sealed and can be extremely dangerous in the confined space of a campervan. All permanent installations must be room-sealed, venting exhaust gases safely outside the vehicle.

The NCC serves as the UK trade body representing the interests of the motorhome and campervan industry, promoting safety and excellence across the supply chain. When modifying your vehicle, it is essential to ensure that any heating system is installed by a competent professional who understands the specific requirements of leisure vehicles. If you are adding heavy components like underslung tanks, always use a motorhome weight checker to ensure you remain within your vehicle's legal payload limits.

Frequently Asked Questions

Can I leave a diesel heater on while I sleep?

Yes, modern diesel heaters are designed for continuous use. However, you must ensure the installation is room-sealed and that you have a functioning CO alarm. It is also important to ensure your leisure battery has enough charge to run the fan throughout the night.

Does campervan heating cause condensation?

Blown-air systems (diesel or gas) actually help reduce condensation by circulating warm, dry air. In contrast, unvented portable gas heaters release significant moisture into the cabin and should be avoided entirely as per NCC guidance.

How often should I service my heater?

Heaters should be serviced according to the manufacturer's instructions. Diesel heaters may require periodic cleaning of the burner to maintain efficiency, while gas systems should be checked for leaks and pressure issues by a qualified professional.

What is the best heater for high-altitude camping?

Standard diesel heaters can sometimes struggle at high altitudes due to lower oxygen levels. If you plan to tour mountainous regions, look for models that offer altitude adjustment features to ensure the fuel-to-air ratio remains optimal.

Can I run my heater while driving?

You should only run a heater while driving if the system is specifically designed and certified for 'in-motion' use. Always consult the manufacturer's manual or a specialist dealer to confirm your system's capabilities.

Is electric heating viable for wild camping?

Generally, no. The power draw of an electric heater will deplete a standard leisure battery very quickly. Electric heating is best reserved for when you are connected to a 230V supply at a campsite or holiday park.