OBAKL Diesel Heater 12V 2kW with Talking LCD Controller

Name: OBAKL Diesel Heater 12V 2kW with Talking LCD Controller
Brand: Obakl
Price: 129.99 GBP
Availability: InStock

Diesel Air Heater

From: Obakl

This is a 12V 2kW diesel air heater from OBAKL, model OAH-B1. It suits campervans, caravans, boats, lorry cabs and workshops. The housing is red aluminium and the unit weighs 5.98kg.

What does it do? It burns diesel to warm a space of roughly 9 to 15 m². The Diesel heater 2kW uses just 0.1 to 0.25 litres an hour and the 5L tank gives over 15 hours of heat.

You control it with a talking LCD switch or a remote. It has a timer, overheating protection at 180°C and Plateau Mode for altitudes up to 5,000 m. It costs £129.99.

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Product Features

Aluminium housing - The casing is red aluminium rather than plastic. Why does that matter? It resists corrosion and protects the parts inside, even in damp sheds or on boats. One German reviewer said it makes the unit heavier but clearly sturdier. The whole heater weighs 5.98kg. Talking LCD controller - The switch speaks real-time voice prompts in English or German. It sets temperature and timer and switches between °C and °F. So do you need to read a manual mid-install? Not really. The prompts walk you through each step, which helps when your hands are cold. Remote control - A second LCD remote works from up to 49 m away. That means you can start the heater from your house or bed and step into a warm van. One reviewer also liked that the remote shows the temperature. It is a simple way to avoid scraping a cold cab.

Low fuel use - The heater burns 0.1 to 0.25 litres of diesel per hour. The 5L tank lasts over 15 hours. How much is that to run? Very little compared with electric heating off a leisure battery. You can also connect the standpipe to your vehicle's main tank as a backup supply. Plateau Mode - Thin air at height changes how fuel burns. This mode adjusts combustion automatically for altitudes up to 5,000 m. So will it still run in the mountains? Yes. You get steady heat without adjusting anything by hand, which suits trips through Scotland, Wales or the Alps. Quiet and protected - A high-precision fuel pump and efficient combustion keep noise low. Reviewers called it very quiet and noted no smoke. It works from -40°C to 50°C and cuts out through overheating protection at 180°C. That gives you a safer, calmer night's sleep in a small space.

FAQs

What size of space can this heater warm?

The OBAKL is rated for roughly 9 to 15 m² (100 to 160 ft²). That suits a campervan, a small boat cabin, a lorry cab, a shed or a single-car garage.

One buyer said 2kW is all you need for a van and that anything bigger gets too hot. Another replaced a 5kW unit in a tiny house because it overheated the room. If your space is bigger than 15 m², the 5kW model covers about 15 to 20 m² and the 8kW covers about 20 to 25 m².

How much diesel does it use and how long does one tank last?

Fuel use runs from 0.1 to 0.25 litres per hour. The built-in tank holds 5 litres. The listing states more than 15 hours of heating per tank.

At the lowest setting the sums work out nearer 50 hours. At full output they work out to about 20 hours. Your real figure depends on the heat setting and the outside temperature.

You can also connect the standpipe to your vehicle's main tank as a backup supply. That means a long trip does not depend on refilling the 5 litre tank.

How loud is it at night?

Buyers describe it as very quiet. One person ran it for a couple of hours after fitting and noted the low noise. They also saw no smoke and said it got pretty hot.

The maker puts this down to efficient combustion and a high-precision fuel pump. A silencer (muffler) comes in the box. No diesel heater is silent though. You will hear a faint hum and the fuel pump tick.

What temperatures can it work in?

The heater itself is rated from -40°C to +50°C. The oil pump has a slightly narrower range of -40°C to +40°C. That covers a British winter easily.

It also has overheating protection that triggers at 180°C. This protects the heater and your vehicle or room if something goes wrong with airflow.

Will it work at high altitude?

Yes. Thinner air changes how diesel burns. The Plateau Mode adjusts combustion for you automatically. It is rated for elevations up to 5,000 metres (16,400 ft).

You do not need to set anything by hand. This matters for mountain trips or high roads abroad. The 5kW and 8kW models in the range also have Plateau Mode.

How do the controls work and can I use it from bed?

You get two controllers. One is a talking LCD switch and the other is an LCD remote control. The LCD switch handles temperature, the timer and the switch between °C and °F.

The talking feature gives spoken prompts as you set it up. The languages are English and German. The remote works up to about 48 metres (160 ft). So you can start the heater from a house or bed before you get into a cold vehicle. One German buyer liked that the remote shows the temperature.

What is in the box and how hard is installation?

The kit is fairly complete. You get the heater, the talking LCD monitor and remote, a 5 litre fuel tank, a silencer, a fuel tank standpipe, a main wiring harness, a duct and an air vent outlet. There is also a fuel tube, an air filter, a fuel filter, a fuel pump with clip, a mounting plate, T-piece tubing, zip ties, an air intake pipe, an exhaust pipe, an installation kit and a manual.

The unit is compact and made for tight spaces. One boat owner swapped out an Eberspächer they could not get running. They said this one installed and started as it should. A US buyer noted the manual was written in proper English. You still need to route the exhaust and fuel line safely. If you are unsure, ask a qualified installer.

What is it made of and how big and heavy is it?

The housing is all aluminium in red. It resists corrosion and protects the parts inside. Two buyers said the metal shell feels sturdier than plastic versions. One German buyer noted it makes the unit a little heavier but clearly more stable.

The packaged weight is 5.98kg. Package size is 47 x 40.4 x 26.2 cm. The unit runs on 12V. Check your power supply before buying if you plan to use a 24V system. It is sold by OBAKL and sent via Amazon. Delivery to places outside mainland UK is restricted. A 30-day return right applies to many products. Check the return details on the listing for conditions.

OBAKL Diesel Heater 12V 2kW with Talking LCD Controller Specs

Diesel heater 2kW Specs

# OBAKL 2kW 12V Diesel Heater (OAH-B1) with Talking LCD Controller The OBAKL 2kW diesel heater is a 12V parking heater with a red all-aluminium housing. It is sold as the OAH-B1 and listed as the Diesel Heater Pro. It first appeared on Amazon.co.uk on 6 September 2025. It is made for vans, caravans, motorhomes, trucks, boats, sheds, garages and workshops. It heats air directly and burns diesel from a 5 L tank supplied in the box. ## Housing and build The shell is made of aluminium with a red finish. It is corrosion resistant and protects the parts inside. One reviewer said the metal case makes the unit heavier but clearly sturdier. Another preferred the aluminium casing to plastic versions. The whole package weighs 5.98kg. The heater has overheating protection that works at 180°C. ## Heat output and fuel use The 2 kW heater suits a heating area of about 9 to 15 m². It uses 0.1 to 0.25 L of diesel per hour. One 5 L tank gives more than 15 hours of heating. The heater works in outside temperatures from -40°C to +50°C. The oil pump works from -40°C to +40°C. The heater uses efficient combustion and a high-precision fuel pump. Customers describe it as quiet. A reviewer who fitted it in a van said 2 kW is enough and that more power gets too hot. A tiny house owner swapped a 5 kW unit for this one. They said it heats more slowly on low but cycles on and off less. On high it still gave enough heat. If you need a longer run time you can connect the standpipe to the vehicle's main fuel tank as a backup supply. ## Plateau Mode for high altitude Plateau Mode adjusts combustion automatically for thinner air. The heater works at heights up to 5,000 m (16,400 ft). ## Controls The heater has two controllers: - Talking LCD switch: It gives voice prompts in English or German. It sets the temperature and the timer. It switches between °F and °C. - LCD remote control: It works up to about 49 m away (160 ft). You can use it to pre-heat a vehicle or workspace from home or bed. One German reviewer liked that the remote shows temperatures. ## What is in the box The main kit is: - the 2kW heater - the talking LCD monitor and remote control - the 5 L fuel tank - an accessories kit The full package list is: - silencer (muffler) - fuel tank standpipe - main wire harness assembly - duct - air vent outlet - fuel tube - air filter - fuel filter - fuel pump - fuel pump clip - mounting plate - T-piece tube - set of zip ties - air intake pipe - exhaust pipe - set of installation kit - manual One reviewer said the manual was written in proper English. ## Size options The heater also comes in 5 kW and 8 kW versions. Both have a 15 L tank and the same LCD and remote control. | Model | Power | Heating area | Fuel use | Tank | Run time | Price | |---|---|---|---|---|---|---| | OAH-B1 | 2 kW | 9 to 15 m² | 0.1 to 0.25 L/h | 5 L | More than 15 hours | £129.99 | | OAH-B2 | 5 kW | 15 to 20 m² | 0.14 to 0.55 L/h | 15 L | More than 30 hours | £149.99 | | OAH-B3 | 8 kW | 20 to 25 m² | 0.16 to 0.62 L/h | 15 L | More than 30 hours | £159.99 | ## Customer feedback The 2 kW model has 29 ratings and an average of 4.6 out of 5. Of these ratings 79% are 5 star and 14% are 4 star. None are 3 or 2 star and 7% are 1 star. Customers say it works well and is quiet. One reviewer replaced an Eberspächer unit that they could not get running. They fitted this heater in an old boat and it started as it should. One reviewer in Australia noted it made no smoke and got hot. One reviewer received a unit with a defect. The seller replied quickly and fixed it. ## Delivery and returns Amazon lists a 30-day right of return for many products. Some products cannot be delivered outside mainland UK. ## Specifications

Specification	Detail
Brand	OBAKL
Manufacturer	OBAKL
Model	Diesel Heater Pro
Item model number	OAH-B1
Manufacturer part number	OAH-B1
Heater power	2 kW
Rated voltage	12 V
Fuel type	Diesel
Fuel consumption	0.1 to 0.25 L/h
Fuel tank capacity	5 L
Heating time per tank	More than 15 hours
Heating area	Approx. 9 to 15 m²
Heater working temperature	-40°C to +50°C
Oil pump working temperature	-40°C to +40°C
Overheating protection	180°C
Plateau Mode	Yes
Maximum altitude	5,000 m
Type of control	LCD monitor and remote control
Remote control range	Up to approx. 49 m
Voice prompt languages	English and German
Temperature units	Switchable °C and °F
Timer function	Yes
Housing material	Aluminium
Colour	Red
Package dimensions	47 x 40.4 x 26.2 cm
Weight	5.98kg
Included fuel tank	5 L
Included accessories	Silencer, standpipe, wiring harness, duct, air vent outlet, fuel tube, air and fuel filters, fuel pump and clip, mounting plate, T-piece tube, zip ties, air intake pipe, exhaust pipe, installation kit, manual
Date first available	6 September 2025

I wrote this from the product data you supplied. I did not research beyond it, because my web search tools aren't available in this session. I converted ft² to m² and feet to metres and rounded the results. I used metres for the remote range and altitude because centimetres would give very large numbers. I left German review wording out of the text and summarised it.