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Indirect Space Heaters
Indirect oil fired space heaters provide large volumes of 100% clean, fume-free warm air. This makes them ideal for heating indoor, enclosed and poorly ventilated areas safely and effectively, such as enclosed workshops, halls, marquees, and other areas where there are people and animals.
Arcotherm
Arcotherm BH Suspended Indirect Fired Space Heaters 44kW - 89kW
- 44.4kW - 89kW Indirect Heat
- Runs on Automatic Oil or Natural/LPG Gas Separate Burner
- IP65 Electric Board Grade Protection
- Stainless-Steel Body & Combustion Chamber
- Summer/Winter Switch
- Diverse Control Safety Features
Flexel
Flexel Ecosun S+ High Output Radiant Space Heater Series 900W - 3600W
- 900W-3600W High-Output Range
- 230v Mains Supply
- Ceiling or Wall-Mount Installation Options
- Slim Powder-Coated Steel Casing
- Aluminium Profile with Silicated Surface
- No Light. No Noise. No Fumes.
Powrmatic
Powrmatic OUH Oil Fired Heater 45kW
- Downward firing high/low-pressure jet burner
- Output range: 20kW to 60kW
- Suspended indirect oil-fired heater
- Standard stainless steel heat exchanger
- Free-blowing axial or ducted centrifugal fan
Powrmatic
Powrmatic OUH Oil Fired Heater 60kW
- 20kW to 60kW output models
- Free-blowing axial or ducted centrifugal
- Indirect oil-fired suspended heater
- 304-grade stainless steel heat exchanger
- High/low-pressure jet burner
Powrmatic
Powrmatic OUH Oil Fired Heater 30kW
- Models from 20kW to 60kW
- Axial or centrifugal fan options
- Stainless steel heat exchanger standard
- High/low-pressure jet burner
- Suspended indirect oil-fired heater
Master Climate Solutions
Master BV 290 Indirect Oil Fired Space Heater - Dual Voltage 81kW
- 276,000 BTU/hr Portable Indirect Heat
- Runs on Diesel, Kerosene and HVO
- 3300m³/h Airflow
- Robust Design & Quality Components
- Flue, Thermostat & Cover Available As Accessories
- Duct Warmth To Marquees, Workshops & Events
Arcotherm
Small Space Heater Package (Arcotherm EC22 Indirect)
- 19kW Portable Indirect Heater
- Ducting, Rain Cowl & More Included
- Runs on Diesel or Kerosene
- Integrated Thermostat Control
- Perfect For Enclosed Spaces
Arcotherm
Arcotherm Jumbo 185M Indirect Oil Fired Space Heater - 240v 170kW
- 580,380 BTU/hr Powerful Portable Indirect Heat
- Runs on Diesel, Kerosene or Biodiesel
- 13,000m³/h Huge Airflow
- Flue, Thermostat & Ducting Accessories Available
- Ideal For Warehouses, Factories & Construction
- Create Your Own Package
Arcotherm
Arcotherm Package Jumbo 185M Indirect Oil Fired Space Heater - 240v 170kW
- Fully equipped heating package – designed for large-scale performance
- Includes Arcotherm Jumbo 185M indirect oil fired heater, Ecoflam diesel burner, Jumbo Tigerloop, 450 mm one-way ducting adaptor, flue pipe, rain cowl & heavy-duty thermostat with 10 m lead
- Powerful 170 kW output with 13,000 m³/h airflow for large commercial & industrial areas
- 580,064 BTU/hr heating capacity with 92–93% efficiency
- Runs on diesel, kerosene or biodiesel
- Robust design with high-quality 7-blade fan
- Free service kit worth £65
Arcotherm
Arcotherm Jumbo 235M Indirect Oil Fired Space Heater - 240v 218kW
- 743,846 BTU/hr Powerful Portable Indirect Heat
- Runs on Diesel, Kerosene or Biodiesel
- 17,000m³/h Huge Airflow
- Flue, Thermostat,Tigerloop & Ducting Accessories Available
- Ideal For Warehouses, Factories & Construction
- Create Your Own Package
Arcotherm
Arcotherm Package Jumbo 235M Indirect Oil Fired Space Heater - 240v 218kW
- Fully equipped heating package – engineered for large-scale performance
- Includes Arcotherm Jumbo 235M indirect oil fired heater, Ecoflam diesel burner, Jumbo Tigerloop, 450 mm one-way ducting adaptor, flue pipe, rain cowl & heavy-duty thermostat with 10 m lead
- 218 kW output with 17,000 m³/h airflow for large commercial & industrial areas
- Runs on diesel, kerosene or biodiesel
- Robust design with high-quality 7-blade fan
- Free service kit worth £65
Master Climate Solutions
Master BV 500CR Indirect Oil Fired Space Heater - 240v 150kW
- 512,000 BTU/hr Portable Indirect Heat
- Runs on Diesel or Kerosene
- 5000m³/h Airflow
- Ducting Connection for Directing Warmth
- Flue, Thermostat & Ducting Accessories Available
- Ideal for Construction, Warehouses & Events
Indirect Space Heaters
Portable heaters for enclosed spaces
Indirect fired space heaters are designed for heating enclosed, indoor, and poorly ventilated spaces. They produce only clean, fume-free & dry warm air, so they can be used for heating halls, marquees, galas, event tents, workshops, farmhouses, and a range of other indoors spaces safely.
These heaters can be fuelled using diesel, heating oil, paraffin or kerosene. The flame burns inside a combustion chamber and warms a heat exchanger. A fan at the back of the unit draws air in and passes it around the heat exchanger. The temperature of the air rises as it blows over the heat exchanger. The clean warm air blows out of the front of the heater while fumes are expelled out of the top of the unit through the flue.
These portable heaters can be placed outside the area you want to heat, and the clean, warm air can be ducted inside through flexible hoses. They can also be used as a more permanent heater, by placing the unit indoors and installing a flue to exhaust the fumes outside through a wall or roof.
Indirect oil fiired heaters are highly versatile. As the warm air is 100% clean and safe, you can use them in sensitive areas, such as food processing factories, oil refineries, foundries, or storage centres. With the output warm air also being dry, you can use them for drying applications and frost protection. They work extremely well with industrial fans and dehumidifiers. If you need a more efficient source of heat and have a well-ventilated space like construction sites, a direct diesel space heater might be a better match.
National Heater Shops has an extensive selection of indirect-fired diesel space heaters from trusted brands such as Master, Arcotherm, Heylo, and Thermobile. So, whether you need to heat a small workshop or large barn, we can find the perfect product for your needs. Many models feature large internal tanks, and can also be used with extra fuel tanks to prolong run times. We have also created a range of heater package deals which include everything you need to get started right away, including free delivery to mainland UK.