The Sealey IR13 is a 13kW industrial infrared diesel heater built for workshops, warehouses, garages and marquees. No fan, no dust, no fuss. Runs on around 1 litre of diesel per hour with a 24hr timer, thermostat and a full set of safety cut-offs.
The Sealey IR13 is a 13kW industrial infrared diesel heater designed for serious working environments where you need reliable, even heat without the noise and dust circulation that comes with fan-driven units. Infrared heating works by warming objects and surfaces directly rather than blowing heated air around, which means the warmth feels immediate and consistent across the space rather than gathering near the ceiling where it is precisely no use to anyone.
Running on clean diesel at approximately 1 litre per hour, operating costs are low compared to electric alternatives at this output level. The burn is clean and the fuel supply is precisely regulated, so there are no unpleasant fumes and no carbon monoxide risk from incomplete combustion. That said, adequate ventilation is still required, as it is with any fuel-burning appliance indoors.
Safety and Control on the Sealey IR13 Industrial Infrared Diesel Heater
Sealey has packed a sensible set of safety features into this unit. Overheat protection, auto-misfire detection, tilt and shock sensors, low fuel cut-off and flame-out fuel cut all work together to shut the heater down if something goes wrong. In a busy workshop or site environment, that kind of automatic protection matters. The soft-touch control panel with LED display makes it straightforward to set up, and the 24-hour timer with temperature-control thermostat means you can heat a space before you arrive and not waste fuel once it has reached temperature.
Four castor wheels make it easy to reposition the unit between jobs or across a large floor space. Optional stainless steel exhaust extensions are available separately (IREX1, IREX2, IREX3) if you need to duct the exhaust outside. Backed by a 3-year guarantee, this is a heater built to work hard through many a cold season on site.
Pro Tip: Always uncoil or straighten any exhaust extension pipe fully before running the heater for extended periods, and check the fuel filter regularly if you are working from older diesel stock as contaminated fuel is the most common cause of ignition faults on infrared diesel heaters.
The Sealey IR13 is used wherever a large indoor or semi-covered space needs consistent, quiet heat without air movement. Garages and bodyshops use it to maintain working temperature during cold months without stirring up dust over fresh paintwork. Warehouses and distribution units benefit from the low running cost at this output level. Construction sites use infrared diesel heaters to keep materials and freshly laid concrete above temperature during winter work, and marquee hire companies rely on them for events where a silent heat source is essential.
Best For
Workshops and garages
Warehouses and industrial units
Marquees and event spaces
Construction site drying and frost protection
Bodyshops requiring dust-free heating
Key Features
13kW heat output
No fan, no air movement, no dust circulation
24-hour timer with thermostat
Soft-touch panel with LED display
Four castor wheels
Compatible with IREX1/IREX2/IREX3 exhaust extensions
3-year guarantee
Safety Systems
Overheat protection
Auto-misfire detection
Tilt and shock sensors
Low fuel shut-off
Flame-out fuel cut
Not suitable for: This heater is only suitable for use with fresh, clean diesel. It is not designed for use in sealed, unventilated spaces, and should not be used with biodiesel blends or contaminated fuel.
Position the unit on a level surface in a well-ventilated area, ensuring the exhaust outlet faces towards an external opening or is connected to an IREX extension pipe ducted outside. Fill the tank with fresh, clean diesel only. Use the soft-touch panel to set your desired temperature and, if needed, programme the 24-hour timer before starting.
Allow a short warm-up period when first firing the unit in cold conditions. The infrared element will reach working temperature within a few minutes. Keep the area around the heater clear and check fuel levels before extended use to avoid the low-fuel sensor cutting the unit mid-session.
Place the heater on a firm, level surface with adequate clearance on all sides
Ensure the space is well ventilated before operating
Fill the fuel tank with fresh, clean diesel only
Connect any exhaust extension pipes (IREX1/2/3) if ducting to outside is required
Power on using the soft-touch control panel
Set the desired temperature using the thermostat control
Programme the 24-hour timer if pre-heating or timed shutdown is required
Allow the unit to reach operating temperature before leaving unattended
Check fuel level before extended sessions to prevent low-fuel shutdown mid-use
Does the Sealey IR13 need a flue or exhaust pipe fitted?
It depends on your setup. In a large, well-ventilated space such as an open workshop or warehouse, the unit can operate without external ducting, but adequate fresh air flow is essential. For more enclosed areas, Sealey offer stainless steel exhaust extensions (IREX1 end pipe, IREX2 1m extension, IREX3 90-degree bend) that allow you to duct exhaust gases outside. These are sold separately.
Can I use red diesel or biodiesel in the IR13?
No. Sealey specifies fresh, clean diesel only for this unit. Biodiesel blends, red diesel with additives, or contaminated fuel can cause ignition faults, damage the fuel system and void the guarantee. Keep the fuel clean and the unit will repay you with reliable starts.
How does infrared heating differ from a fan heater in practice?
A fan heater blows warm air around the room, which disturbs dust, dries out the air noticeably, and tends to push heat upwards. An infrared heater like the IR13 radiates heat directly onto surfaces and people in the space, with no air movement at all. That makes it much more suitable for bodyshops, dusty workshops, and anywhere that noise or air circulation would be a problem.
The Sealey IR13 uses an infrared ceramic burner element fuelled by diesel, producing 13kW of heat output at a consumption rate of approximately 1 litre per hour. The stainless steel construction of the burner housing and the precisely regulated fuel supply system are designed to ensure a clean, complete burn. The unit includes a microprocessor-controlled safety system managing overheat, tilt, shock, misfire and low-fuel conditions. Backed by a 3-year Sealey guarantee.
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