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10 Best Diesel Heaters in The UK

Last updated on 09/07/2025

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12V Portable Diesel Heater, 6L Fuel Tank Toolbox 2 Diesel Air Heater 8KW All-in-One Parking Heater, Car Heater with Bluetooth APP Control for Car Trucks RV Motor-Homes and camper

Why We Love It

Fast heating keeps you comfortable.
Compact and portable design.
Smart control with Bluetooth app.

Main Highlights

Fast Heating Technology: The aluminum body is heavier and longer, and the warm air port is wider, which improves the air temperature 10~20°C and reduce exhaust gas temperature by 50~100°C, keeping you comfortable in even the coldest conditions.
New Toolbox Design: The compact, toolbox-style heater comes with an integrated 6L fuel tank. All-in-one box with a built-in handle, this portable diesel heater is easy to transport, install, and maintain. Whether you’re using it for your RV, truck, or outdoor adventures, its compact design makes it convenient and hassle-free.
Smart APP Control: Remotely control your heater with the Bluetooth app. Adjust temperatures, set timers, and activate altitude mode to ensure full combustion efficiency at higher elevations.
Dual Power Options: This versatile diesel heater supports both 12V/24V DC and 110V/220V AC power sources, making it suitable for a wide range of vehicles and locations, whether on the road or at home.
Comprehensive Protection Features: Equipped with over-heating, short-circuit, reverse connection, and over-voltage protections, this diesel heater ensures safe, worry-free operation in any environment.

8KW Diesel Heater, 12V Diesel Air Heater with Bluetooth Remote Control and Smart APP,Car Heaters Automatic Adjustment Support Heater 10L Fuel Tank for Car, Truck, Garage,Boat, RV,Trailer

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Why We Love It

Heats up in 10 minutes.
Low fuel consumption.
Multiple control methods available.

Main Highlights

【Fast Heating】HCALORY 12 volt diesel heater have a built-in all-aluminum construction that combines efficient heating with fast heat transfer and heating, and you can feel the heat in 1 second. Our forced air diesel heater increase thermal efficiency and coverage area, outputting 5500-18000 BTUs of heat and heating 20-27 m² in 10 minutes, getting you into the warmth fast.
【Energy Saving】Our fuel consumption is reduced to 0.15 L/h - 0.44 L/h, which increases the diesel garage heater's range; while other heaters' fuel consumption is only 0.28 L/h - 0.65 L/h. In addition, diesel heater 8kw is equipped with a 10L large-capacity fuel tank, which allows it to heat up continuously for nearly 10 hours, maximizing fuel performance and reducing energy waste.
【Altitude Mode】Diesel heater 12V is configured with highland mode, 5500M(18044FT) above sea level, which can be automatically adjusted to different altitudes and warms up quickly.Hcalory 12v & 24V portable diesel air heater is suitable for any use in RVs, carpentry houses, camping, vans and so on.
【Safety Protections】The new 2025 upgraded motherboard is safer and provides short circuit protection, reverse connection protection, over-voltage protection, over-heat protection (≥270 °C/518 °F), etc. Indoor diesel heater can be used safely in various environments such as cars, RVs, boats and indoors, warming you up for the whole winter.
【Multiple Uses】Small diesel heater supports two operation modes: remote control and LCD panel; the smart APP also provides functions such as timer setting, plateau mode, and adjusting temperature to ensure continuous heating and help you save time. There is also a fan mode, as well as language switch, unit switch, more help and other general settings.

LF Bros Diesel Heater 5KW, 12V/24V/230V Portable Parking Heater with Remote Control for Tent, Van, Garage (White)

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Why We Love It

Portable and easy transportation.
Rapid and stable heating.
Supports multiple voltage options.

Main Highlights

Excellent Portable Heater: The foldable handles provide support for easily moving the diesel heater, while the fuel tank cover with internal threads can also avoid oil leakage. LF Bros parking air heaters add more options for travel.
Suitable for 12V/24V/230V: Our diesel air heaters fully meet the usage environment of different voltages. If connected to a household 230V voltage, please use with a power adapter (included in the box). LF Bros focuses on providing you with a warm life, starting a warm journey anytime, anywhere.
Rapid Heating: The high-quality ignition pin improves the ignition speed and makes the operation more stable. After full combustion in the combustion chamber, it quickly dissipates heat through the aluminum shell, making the overall space heating faster and easily removing frost from the car windows.
Wide Application：As a heating partner of diesel vehicles, LF Bros heaters are widely used to heat the cabins of cars, RVs, caravans, tents, ships, and other vehicles. The use of diesel heaters 5kw reduces the engine pressure on the car itself, making heating more convenient, simple, and energy-saving.
Stylish Design & Nice Service: If you are tired of a tedious appearance, you will be attracted to the unique LF Bros diesel heater. The modern and minimalist metal shell design and smooth lines will add highlights to your life. If you have any questions about our air heater, please tell us. We will resolve all issues within 24 hours.

12V Diesel Heater 8KW, Portable Diesel Air Heater Bluetooth All-in-one with Smart APP, Remote Control and LCD Control, 12V 24V DC Parking Diesel Heaters for Car, Truck, Boat, RV,Campers

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Why We Love It

Rapid heating in ten minutes.
Low fuel consumption.
Versatile control options.

Main Highlights

RAPID HEATING: HCALORY 12 volt diesel heater have a built-in all-aluminum construction that combines efficient heating with fast heat transfer and heating, and you can feel the heat in 1 second. Our forced air diesel heater increase thermal efficiency and coverage area, outputting 5500-18000 BTUs of heat and heating 20-27 m² in 10 minutes, getting you into the warmth fast.
ENERGY CONSERVATION: The diesel heater 12V adopts a sophisticated low-noise fuel pump. Fuel consumption is reduced to 0.15 L/h-0.44 L/h; the large 5L fuel tank heater can supply heat continuously for nearly 10 hours, maximising fuel performance and reducing energy waste.
Altitude Mode: Diesel heater 12V is configured with highland mode, 5500M(18044FT) above sea level, which can be automatically adjusted to different altitudes and warms up quickly.Hcalory 12v & 24V portable diesel air heater is suitable for any use in RVs, carpentry houses, camping, vans and so on.
Safety Protections: The new 2025 upgraded motherboard is safer and provides short circuit protection, reverse connection protection, over-voltage protection, over-heat protection (≥270 °C/518 °F), etc. Indoor diesel heater can be used safely in various environments such as cars, RVs, boats and indoors, warming you up for the whole winter.
MULTIPLE WAYS OF USE: The diesel air heater can be used in 3 ways by bluetooth control (30 metres), remote control and LCD panel control; Smart APP can also provide timing function, thermostatic control, temperature adjustment, voice broadcasting and other functions, which can provide you with continuous heating and save time.

Sunster 8KW Portable ALL IN ONE Diesel Air Heater, 12V 24V 220V Diesel Parking Heater, Parking Bunk Heater with Bluetooth APP Control and LCD Monitor for Car Trucks Boat Bus RV Motor-Homes and camper

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Why We Love It

Versatile with included transformer.
Convenient Bluetooth app control.
Reliable safety features certified.

Main Highlights

Real Use Anywhere-Apart from supporting 12v and 24v, the kit includes a 110-240v transfomer. You can plug the heater directly to 220 volts sockets. No fuss to buy extra parts and do the DIY work to use it in your garage or basement. Make you feel toasty in RV,car, camper,trailer, home, shop, basement etc in winter. Get prepared when the weather takes a turn.
Smart- To save you time and make the use of our heater more comfortable for you, we have updated the motherboard of the heater and in particular added an extended Bluetooth module. With the app, you can operate the heater.
Use Safety-Our heaters are equipped with intelligent temperature control and overheat protection to ensure your safe use throughout the winter season. In addition, it has also passed the certification, providing you with more reliable and peace of mind.
low fuel consumption&Smart fuel saving-Upgraded the aluminum body of the heater, reducing fuel consumption to 0.11-0.35 (L/H) and increasing heating speed.
Improved LCD switch display：There are two new functions, manual refueling mode（pumping can be manually controlled, which saves you a lot of time）；Automatic start & stop (in automatic mode, when the indoor temperature reaches the set temperature, it will automatically shut down after a delay of 30 seconds; when the indoor temperature is 2 ℃ below the set temperature, it will automatically start up after a delay of 30 seconds)

12V/24V 8KW Diesel Air Heater All-in-One Parking Heater with 4 Air Outlets, 5L Fuel Tank, LCD Display & Remote Control, Fast Heating for Motorhomes Bus RVs Trucks Boats ect.

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Why We Love It

Rapid heating for winter comfort.
Low fuel consumption efficiency.
Quiet operation for peaceful sleep.

Main Highlights

8KW 12V/24V Diesel Heater - The all-in-one diesel parking heater heats up quickly and dissipates evenly. It can be placed in the car to heat the air and remove the frost on the windows, making winter driving warm. The diesel parking heater heats up quickly and efficiently in just 10 minutes to ensure a comfortable temperature in your vehicle, boat or cabin. It is suitable for heating and insulation of motorhomes, RV, bus, trailer, boat and all kinds of other diesel vehicles.
Rapid Heating & Low Consumption - Diesel air heater has a power of 8KW, a rated voltage of 12V/24V, four air outlets, large air output, fast wind speed, large heating area. Using diesel as fuel, low emission, low fuel consumption 0.11-0.64 (L/H), the diesel air heater comes with a large 5 litre/1.3 gallon fuel tank that can provide heat for up to 8 hours, stable operation and longer service life.
Quiet and Low Noise -Diesel Heater 8kw LCD can significantly reduce noise by controlling the blower speed, using quiet oil pump, quiet fan and muffler. Two metal fixing feet make the placement stable and reduce vibration. Low frequency pulsation, low vibration metering oil pump and silent fan allow you to sleep peacefully and provide a warm and quiet environment.
Upgraded Two Control Modes - 12V/24V portable diesel heater can be controlled by on-screen button to turn on/off and adjust gears or controlled by remote control, which can be remotely controlled within 98 feet /30 meters (without obstacles). The intelligent digital display screen clearly shows the operating status. Preheat your vehicle from the outside to keep the interior warm, heat the engine, and keep windows from freezing.
Easy Installation - This 8KW diesel heater comes with a complete installation kit, including all mounting screws. The heater's shell uses a snap-on design that makes it easy to remove at any time for maintenance or cleaning. We provide one year warranty and 7X24 email service. Please contact us if you have any questions about this diesel air heater all in one.
Wide Application - Compatible for Motorhomes, Campervans, Caravans (Travel Trailers / Camper Trailers), Fifth-wheel Trailers, Popup Campers and Truck Campers, Small Truck, Big Truck, Light Truck, Heavy Truck, Pickup, Van,Bus,Car,SUV, Boat, Forklift, Electric Tricycle, Engineering Vehicle, Yacht and so on.

5KW 12V Diesel Air Heater, Parking Heating w/LCD Switch Monitor Display, Remote Control, 10L Tank, Muffler, Fast Heating Defrosting Defogger Car Heater for Trucks, Camper, Vans, RV, Boat, Motorhome

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Why We Love It

Reduces fuel consumption efficiently.
Enhances driving safety greatly.
Compact and easy installation.

Main Highlights

🔥【PRODUCT DIMENSIONS】：38.9 x 14.5 x 14.5cm / 15.3" x 5.7" x 5.7", this is an exquisite air heater with compact structure and exquisite design. The product itself occupies a small area and it is easy to find installation space. Comes with a complete installation kit and manual. Low emission, low fuel consumption; the engine equipped with muffler has undergone noise reduction treatment, so the noise is very low.
🔥【SPECIFICATION】： Diesel air parking heater power: 5KW, fuel: diesel, rated voltage: 12V, automobile air conditioner type: heating, fuel consumption (L/h): 0.18-0.68, heater working temperature: -40℃~+ 50℃, the working temperature of the oil pump: -40℃~+40℃, the ambient temperature, the set oil volume and the set temperature can all be reflected on the LCD screen. The 10-liter fuel tank is made of ABS, compact and easy to install.
🔥【MULTIFUNCTIONAL】: This is an upgraded version of the ideal second-generation diesel parking air heater. Ceramic ignition sockets use volatile technology to heat fuel, evaporate it into a gas, and then quickly ignite and burn completely. The air heater can help you reduce fuel consumption while driving or in the cold winter, reduce the wear and tear of the car engine, and defrost, and the defogger can quickly eliminate the frost and fog on the window glass, improving driving safety.
🔥【WIDE APPLICATION】： The Parking heater can help you reduce the fuel consumption when the vehicle starts or when driving in cold winter, reduce the wear and tear of the car engine, remove the frost on the car windows, and reduce the difficulty of starting the car. Suitable for all types of diesel mechanical vehicles, such as RVs, cars, trucks, buses, boats, campers, caravans, trucks and vans.
🔥【PACKAGE INCLUDES】：1 Air Heater, 1 Remote Control (Without Battery), 1 LCD Display, 1 X Muffler(Silencer), 1 X Air Filter, 1 X Oil Pipe, 1 X Wire Harness, 1 X Oil Pump, 1 X Oil Filter, 1 X Air Filter, 1 X 10L Tank, 1 X Air Outlet, 1 X Exhaust Pipe, 1 X Air Intake Pipe, 1 X Air outlet pipe , 1 X Fixed Plate, 1 X Mounting Accessories., 1 X Manual. The air heater quickly defrost fog, provide you with a clear vision, improve the comfort & safety of the driving environment.

Jacgood 12V 5KW-8KW Diesel Air Heater，With Remote Control LCD Monitor Low Noise Fast Heating Parking Heater, For Car Trucks Boat Bus RV and Trailer. (Red)

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Why We Love It

Preheating with remote control.
Eco-friendly and low-noise.
Versatile for various vehicles.

Main Highlights

Upgraded New Version: Heater power: 8KW,Fuel gasoline: diesel,Car air conditioning type: Heating,Rated voltage: 12V,Working temperature of the heater: -40℃~+50℃, Working temperature of the oil pump: -40℃~+40℃. Fuel consumption: 0.1~0.64L/hour.
Preheating in Advance: Equipped with a remote control, you can adjust the temperature through the remote control or panel, and heat the car before entering the car in the cold winter.
Safe and Low-Noise: The heater is environmentally friendly with low emissions and low fuel consumption, keeping you warm without harming the environment. Effectively reduce noise through blower speed control, giving a quiet and comfortable environment.
Wide Range of Use: This diesel engine heater can be used to heat the cab of various diesel mechanical vehicles, such as cars, buses, RVs, trucks, engineering vehicles, etc. It can also be used in all kinds of extreme hot and cold weather.
Easy to Install: The heater product comes with a complete installation kit, including all mounting screws, please read the instructions before installation. If you encounter any problems during installation or use, please contact our customer service at any time.
NOTE:The product needs to be installed, you can refer to the video in the main picture for the installation steps.

Triclicks 12V 5KW Air Diesel Heater Parking Heater Diesel Night Heater with Silencer LCD Switch Remote Control 10L Tank For Truck, Boat, Car Trailer, Motorhomes, Campervans (Colour 1, 5KW)

Why We Love It

Versatile and suitable for many spaces.
Adjustable settings with remote control.
Easy installation and portability.

Main Highlights

WIDELY USED - The diesel air heater can be used for truck, boat, car trailer, motorhomes, touring car, campervans, caravans and all kinds of other diesel vehicles. Diesel air heater is also suitable for indoor use, such as for home, warehouse, factory, office, etc. Tips: The smaller the space, the faster the warmth. If the space is large, it is recommended to buy a few more heaters to heat it.
REMOTE CONTROL, PREHEATING IN ADVANCE - Remote control can Preheating, oil quantity, temperature and wind speed can be adjusted, window's frost can be eliminated. Environmentally air diesel heater, low emissions, low fuel consumption. NOTE: The remote control needs to be set before it can be used. You can see the steps in the Product Description.
EASY TO OPERATE & CONVENIENT TO USE - The LCD dynamic display will clearly show the running state of the machine. Fuel, electricity, temperature can be set arbitrarily. Compact structure, easy to move. When the vehicle is replaced, it can be disassembled to the new car.
LOW NOISE - Equipped with a silencer, and the oil pump has a low pulse frequency and minimal vibration, effectively reducing noise. The diesel heater adopts volatile technology, which heats and evaporates the diesel into gas through ignition plug, ignites quickly, and burns fully.
FULL KIT - Includes everything needed for standard installation. Package Included: 1 x Diesel Air Heater, 1 x Set of Accessories (Shown as Picture), 1 x Manual. Professional installation is recommended.

Diesel Air Heater All In one, One Air Outlet, 8KW Diesel Heater 12V, Diesel Parking Heater with LCD Monitor & Remote Control, Fast Heating For Car, RV Truck, Boat, Campervans and Caravans

Why We Love It

Reduces noise, very quiet.
Fast heating, very efficient.
Sturdy and practical design.

Main Highlights

🚗【LCD Switch & Low Noise】- Equipped with LCD monitor, you can adjust the temperature by the panel, warming the car before entering it on the cold winter. To increase the fixed bracket, the balance of the fan impeller rotation more stable, reducing noise.
🚗【Thermostatic Control & Oil Observation Hole】- The parking heater is designed with thermostatic control technology, heats up fast and warms you every winter. There are oil observation holes design on the parking heater that is convenient for you to know the fuel usage.
🚗【Premium Material】- The alloy shell oil pump can control the pump oil quantity, make the oil and gas ratio in a stable and balanced state, to achieve the role of fuel saving. Aluminum body is sturdy and practical one-piece molding to dissipate heat evenly and conduct heat quickly. Environmentally product, low emissions and low fuel consumption. With volatile technology, by the ignition plug will fuel heating evaporated into gas, fast ignition, full combustion.
🚗【Easy to Use】- All into 1 unit, saving space and easy to move. With compact structure, you can easy to install or dismantle it to a new car.【Notes:Package dose not includes exhaust silencer.】
🚗【Widely Application】- The diesel air heater can be used at high altitudes. The heater not only can be used as a window glass defrost, but also for heating the cab of the freight vehicles, storage battery cars and all kinds of other vehicles.

9.0

Superb

We scanned 1043 products

We reviewed these offers relevant to the Diesel Heaters within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like HCALORY, LF Bros, Sunster, MOTOCOCHE, GSOU, Jacgood, Triclicks, SHINROAD, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Diesel Heaters in the market, we considered we took a deep dive into 5216 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is 12V Portable Diesel Heater, 6L Fuel Tank Toolbox 2 Diesel Air Heater 8KW All-in-One Parking Heater, Car Heater with Bluetooth APP Control for Car Trucks RV Motor-Homes and camper. We love many things about this product by HCALORY. What sets it apart from the competition is Fast heating keeps you comfortable. , Compact and portable design. , Smart control with Bluetooth app. .
The best value product for most shoppers and where user satisfaction is continuously the highest is 8KW Diesel Heater, 12V Diesel Air Heater with Bluetooth Remote Control and Smart APP,Car Heaters Automatic Adjustment Support Heater 10L Fuel Tank for Car, Truck, Garage,Boat, RV,Trailer by HCALORY based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Diesel Heaters and the best cost-to-value ratio is Diesel Air Heater All In one, One Air Outlet, 8KW Diesel Heater 12V, Diesel Parking Heater with LCD Monitor & Remote Control, Fast Heating For Car, RV Truck, Boat, Campervans and Caravansat SHINROAD with a % discount.
Our list of the best Diesel Heaters is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Diesel Heaters in The UK

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We scanned 1043 products

We concluded that: