220V Diesel and Kerosene Space Heater 30kW - Direct-Fired 38L Tank

Who is this for

The 30kW direct-fired diesel and kerosene space heater is used by warehouse managers, large workshop operators, site managers, and agricultural estate managers who need to heat spaces above 180m² where the 20kW class cannot maintain working temperature against the heat loss typical of large commercial buildings. The 38L tank and 17.7-hour run time make it particularly suited to operations running extended shifts, multi-shift patterns, or overnight heating cycles where mid-session refuelling is operationally impractical. Plant hire operators supplying temporary heating to construction sites and large agricultural clients also use this output class as a standard unit for buildings up to 310m².

This heater is direct-fired. Combustion gases enter the heated space as part of normal operation. It must only be operated in open or continuously ventilated environments.

Typical applications

• Heating a large vehicle workshop or commercial garage with multiple bays during winter, where roller shutter doors provide continuous ventilation and the 30kW output maintains working temperature across all bays simultaneously.

• Providing temporary heat to a large warehouse or logistics unit during cold periods, where goods handling or vehicle loading requires operatives to work in a thermally stable environment across full shifts.

• Heating an open-plan factory or fabrication workshop where high rooflines, large floor areas, and regular door traffic create heat loss that a 20kW unit cannot overcome.

• Supplying construction site heat to a large semi-open building in progress, ahead of concrete pours, plastering, or floor screeding requiring minimum ambient temperatures in cold weather months.

• Heating a large agricultural building during winter livestock care, lambing, or machinery maintenance where the open structure provides continuous natural ventilation and diesel fuel is available on site.

• Providing rapid background heat to a large semi-open temporary structure at an agricultural show, trade event, or outdoor exhibition where adequate ventilation can be confirmed before operation.

How to use

Step 1: Assemble the wheel frame and transport handle before first use.

Step 2: Confirm the space is open or continuously ventilated before positioning. Do not place in any enclosed space.

Step 3: Position on a firm, level, fire-resistant surface with a minimum 2.5 metres of clear space at the front outlet and at the rear of the unit.

Step 4: Fuel outdoors or in a well-ventilated area with the unit switched off and fully cooled. Remove the fuel cap and fill with clean diesel or kerosene to the Full mark. Do not overfill. Refit the fuel cap securely.

Step 5: Connect directly to a 220-240V mains socket. Do not use an extension lead.

Step 6: Ensure the power switch is in the OFF position before connecting. Switch to ON. The unit should start within five seconds.

Step 7: Once the space reaches the target temperature, adjust the thermostat to hold that level. The burner will cycle on and off automatically to maintain temperature without continuous full-output operation.

Step 8: To shut down, switch to OFF and unplug from the mains socket. Allow at least 20 minutes to cool before moving or refuelling.

Common mistakes

• Operating in an enclosed or poorly ventilated space: This heater produces carbon monoxide during normal combustion. Carbon monoxide is colourless and odourless and accumulates without warning in enclosed spaces. Never operate this unit in any space without continuous fresh air exchange, regardless of how briefly it is needed.

• Refuelling without allowing the unit to cool: The fuel tank and surrounding components reach high temperatures during operation. Always allow at least 20 minutes after switch-off before opening the fuel cap. Hot vapour released from a warm tank poses a serious ignition risk.

• Using incorrect fuel: Only standard diesel or kerosene are acceptable fuels. Never use petrol, used oil, paint thinners, or any other flammable liquid. Incorrect fuel risks explosion and serious injury.

• Connecting via extension lead: The unit must plug directly into a mains socket. A coiled or undersized extension lead generates heat under load and creates a fire risk.

• Running without checking clearances: A minimum 2.5 metres must be clear at the front and rear at all times. In a busy workshop or warehouse, this clearance is easily encroached during the working day as materials and vehicles are moved. Check before each session.

• Storing with fuel in the tank: Fuel left in the tank during storage degrades and can contaminate the fuel system. Drain completely before any period of extended storage.

Safety

This is a direct-fired combustion heater. Burning diesel or kerosene produces carbon monoxide, a colourless and odourless gas that is fatal at elevated concentrations. The heater must only be used in open or well-ventilated spaces with continuous fresh air supply. It must never be used in residential areas, sleeping areas, or any enclosed space. A minimum clearance of 2.5 metres must be maintained at the front outlet and at the rear of the unit at all times. Keep all combustible materials, including fuel containers, timber, fabric, and packaging, well clear of the unit during operation. External metal surfaces reach very high temperatures during and after use. Do not touch any surface other than the handle or wheels during or immediately after operation. Allow at least 20 minutes to cool before handling. The heater must never be left unattended while running or connected to the mains supply.

Maintenance

Clean the heater body with a dry cloth only, once the unit has fully cooled after each session. Clean the fan guard and grille with a dry cloth or brush to remove accumulated dust and debris. Clean the fuel filter regularly during the heating season by removing it from the tank and rinsing in clean diesel. Drain the fuel tank completely before any period of storage using the drain plug on the underside of the tank. Wipe fuel spillages immediately. Do not use water to clean the inside of the fuel tank. Annual inspection of the nozzle, spark plug, photocell, and pump by suitably qualified personnel is recommended to maintain safe and efficient operation.