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Hyundai HY125DKH 37kW Diesel/Kerosene Space Heater 125,000BTU

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125,000 BTU / 37kW space heater: Ideal for heating medium-sized garages, factories and workshops

Distributes heat quickly and evenly: Has approx heating area of 900m3

Low fuel consumption: Cost-effective heating solution for large areas

Simple to use: Easily adjust the desired temperature using the thermostat

Large fuel tank: One full tank gives approximately 10.5 hours of heat

Peace of mind: 3 year Hyundai warranty


Powerful Space Heater

Our 125,000BTU/hr HY125DKH industrial space heater from Hyundai is an ideal choice for heating your medium-sized garage, factory or workshop. Be prepared for the colder months with this Hyundai Diesel Space Heater.

Industrial Heater

With an impressive output of 37kw/125,000BTU, this air heater has an approximate heating area of 900m3 (31,783 cubic feet), distributing the heat quickly and evenly and keeping you warm regardless of the weather outside.

Ideal for placement in the open and semi-open, this heater is the best choice for industrial environments, including agriculture and automotive.

Diesel Space HEater

This forced air heater, which runs on either diesel or kerosene, can be classed as one of the most cost-effective ways to heat large areas.

With an impressive average fuel consumption of only 3.6L/hour, this efficient space heater will keep you warm whatever the weather, with a tank capacity suitable for approximately 10.5 hours of operation.

Warehouse Heater

Simply fill/top up the easy-to-access fuel tank, plug the heater into a standard UK socket, (13 Amp UK plug already fitted), turn the thermostat to the required temperature and switch to the ‘on’ position.

The temperature of this compact space heater is easily adjustable using the thermostat knob located on the side of the heater. The heater will shut down when the desired temperature is reached and restart when temperature drops.

Portable Heater

Mounted on two wheels and fitted with a stand, this diesel space heater can be easily moved from area to area with ease.
Just like any space heater, our HY125DKH requires a little room to be left around it for safety, especially due to the quality way it projects heat into a room or area. Ideally, try to leave around 8ft from the outlet, and 4ft around the sides and top. Don’t forget to place it on a suitable surface!

Minimal assembly required; just assemble the wheeled stand and fill with diesel, plug in and set the thermostat to desired temperature.

3 Year Warranty

Offering great value for money, these powerful diesel air heaters are built to last and come with a 3 year warranty* (terms apply) for your peace of mind.

What is ‘BTU’?

BTU, or, British Thermal Unit is a measure of energy - an alternative measurement to joules. The very basic way to think of a BTU is that 1 BTU is the equivalent of burning a normal-sized wooden match all the way from one end to the other.

The exact measurement of a British Thermal Unit is the amount of heat that it takes to heat one pound (approx one pint) of water by one degree and is measured at the amount of energy to make the 1lb of water heat from 39 degrees Fahrenheit up to 40. (It can take slightly more or less energy to heat water by one-degree Fahrenheit depending upon the starting temperature).

At A Glance:

  • 125,000 BTU/hr (37kW) output
  • 900m3 approximate heating area
  • Suitable for approx 10.5hrs of operation
  • Easy-to-read fuel, pressure and temperature gauges
  • Runs on diesel (red or white) or kerosene fuel
  • Perfect choice for industrial environments, including agriculture and automotive
  • UK-based after sales and parts
  • 3 year limited warranty*


Approx heating area
900 m3
Commercial warranty
1 Year
Diesel or Kerosene
Fuel capacity (l)
Fuel consumption
3.6 L/hr
Fuel power source
Diesel or Kerosene
Fully assembled dimensions
595 x 515 x 940 (H x W x L) (mm)
Gross weight (kg)
Heat output
37kW or 125,000BTU/hr
Max outlet air temperature
404 °C
Model ean
Motor power (w)
Net weight (kg)
Packaged dimensions
485 x 445 x 905 (H x W x L) (mm)
Power supply (v)
Product type
Space Heater
Sound level (db)
Start method
Warranty (years)
Wheel kit

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