This 2kW diesel heater from LF Bros runs on 12V and gives an adjustable output of 1.1-2kW (3,700-6,800 BTU/h). It heats spaces of around 10-15 m² depending on insulation. It suits vans, campervans, motorhomes, truck cabins, boats and trailers.
How do you control it? Through an LCD controller, a wireless remote or the built-in 24-hour timer. Fuel use is only 0.12-0.21 L/h, so the 6L tank lasts roughly 29-50 hours per fill.
The kit includes the fuel tank, air duct, exhaust parts, wiring harness and mounting hardware. The heater unit weighs 7kg and measures 33.5 x 11.9 x 11.6 cm. It costs £209.98 and a £20 voucher is available.
LF Bros rates it for spaces of around 10 to 15 m², depending on insulation and conditions. One part of the listing shows a floor area of 25 m², but the 10 to 15 m² figure is the one in the main product text. Treat that as the safer guide. A well-insulated van or small motorhome is a good fit. A large uninsulated workshop is not. Output runs from 1.1kW to 2kW, which is 3,700 to 6,800 BTU/h.
The tank holds 6 litres. Fuel use is about 0.12 to 0.21 litres an hour. That gives roughly 29 to 50 hours per fill. At full output you will be near 29 hours. At the lowest setting you can reach about 50 hours. Real figures depend on the weather and how well your space holds heat. One reviewer ran the heater for 14 days on a winter trip using the vehicle's own tank.
It runs on 12V, so it suits compatible vehicle and battery-powered systems. The listing does not give a figure for current draw. A reviewer said power use is modest, but that is an opinion rather than a measured number. Check the wiring and fuse guidance in the manual before you connect it. The unit has reverse-polarity, overcurrent and overvoltage protection.
In Power Mode the heater holds the output level you choose and keeps running at it. In Variable Frequency Mode you set a target temperature. The heater works until it reaches that temperature. It then drops to its lowest power level to maintain it. The second mode suits overnight use. The first suits a quick warm-up of a cold space.
It needs some DIY skill. You must route the fuel line, exhaust, combustion air intake and electrical connections. A German reviewer said a hobby mechanic should allow a few hours. This includes drilling holes in the bodywork and wiring. The manual has a diagram and a German version. LF Bros also has an installation video. Avoid sharp 180° bends in the intake hose. One reviewer linked these to extra noise. Another reported smoke and diesel in the air intake after fitting, so seal the joints well.
The exhaust must be fitted outdoors and on the downwind side. It contains exhaust gas, so it must never end inside the cabin or an enclosed space. Keep the combustion air intake clear of the exhaust outlet. If you are not sure, have the heater fitted by a qualified installer.
Reviewers describe it as fairly quiet. One said it was quiet enough while driving in a Piaggio Ape. Another said the pump is very quiet. Two noted some noise. One heard the fan at an intermediate stage. The other said routing the hoses better would likely cut it. The controller also plays a voice message, which one UK buyer found a little annoying.
This is the 2kW T3 split model. It has a 6L tank, 1100 to 2000 W output, a 24-hour timer and a 1500 m altitude rating. It has no thermostat. The T3 5kW model has a 10L tank and 1400 to 5000 W output. The Pro 5kW has a 10L tank, an upgraded glow plug, a silent oil pump, a plateau mode, a thermostat and a 5200 m altitude rating. The older T2 2kW has no timer and a 3.8 star rating from 9 ratings. Choose by the size of your space and how high you will travel.
| Brand | LF Bros |
| Model name and number | ER2.0 |
| Size option | S1-2KW |
| Heater type | Split diesel air heater |
| Fuel | Diesel |
| Voltage | 12V |
| Heat output | 1.1 to 2kW (1,100 to 2,000 watts) |
| Heat output in BTU | 3,700 to 6,800 BTU/h |
| Fuel consumption | 0.12 to 0.21 litres per hour |
| Fuel tank capacity | 6 litres |
| Estimated run time per tank | 29 to 50 hours |
| Suitable space | Around 10 to 15 m² |
| Heater unit dimensions (D x W x H) | 33.5 x 11.9 x 11.6 cm |
| Weight | 7kg |
| Air inlet diameter | 6 cm |
| Air outlet diameter | 6 cm |
| Operating temperature | -40°C to 40°C |
| Maximum altitude | 1500 m |
| Heating modes | Power Mode and Variable Frequency Mode |
| Timer | 24-hour built-in |
| Controller | LCD display |
| Remote | Wireless remote control |
| Thermostat | No |
| Glow plug | Standard |
| Oil pump | Standard multi-pulse |
| Safety protection | Overheat, short-circuit, overcurrent, overvoltage and reverse polarity |
| Energy class | A |
| Kit contents | Heater unit, fuel tank, air duct, exhaust components, combustion air intake, LCD controller, remote control, wiring harness and mounting hardware |
| Country of origin | China |
| Manufacturer warranty | 1 year |
