Trusted HVAC Experts SINCE 2014
Direct Space Heaters
Direct oil fired space heaters provide fast and cost effective heat to large, well ventilated spaces and outdoor areas. A direct space heater is great for construction sites, warehouses, or other well-ventilated spaces.
Ecor Pro
Tectro SRE 1330 TC-2 Paraffin Laser Heater - 240v 3kW
- 3kW Portable Direct Space Heater Capacity
- Mains Supply / 5L Removable Fuel Tank
- 48m2 Coverage Boasts Low Consumption
- Advanced Control System & Safety Features
- High-Tech Burner
- Adjustable Thermostat & LED Display
Master Climate Solutions
Master B35 Direct Oil Fired Space Heater - 240v 10kW
- 34,000 BTU/hr Portable Direct Heat
- 15 Litre Tank Runs on Diesel or Kerosene
- 280m³/hr Airflow
- High-Quality Components & Controls
- Overheat Safety Thermostat
- Fast. Efficient. Cost-Effective.
SIP Industrial
SIP Fireball XD50F Diesel/Paraffin Space Heater - 230v 15kW
- 50,000 BTU/hr Portable Direct Heat
- Runs on Diesel, Paraffin or Kerosene
- 350m3 Heating Area
- Low Fuel Consumption
- Heavy-Duty Air Pump & Stainless-Steel Components
- Dual LED Thermostat Control Display
Sealey
Sealey AB7081 Direct Oil Fired Space Heater - 230v 20kW
- 70,000 BTU/hr Portable Direct Heat
- Runs on Kerosene or Diesel
- 548m³/h Airflow
- Automatic Safety Shut-Off
- Wheel-Mount & Handle Frame
- Integrated Adjustable Thermostat
Master Climate Solutions
Master B70 Direct Oil Fired Space Heater - 240v 20kW
- 68,000 BTU/hr Portable Direct Heat
- 19 Litre Tank Runs on Diesel or Kerosene
- 400m³/hr Airflow
- High-Quality Components & Simple Controls
- Suitable for Well-Ventilated Areas
- Fast. Efficient. Cost-Effective.
SIP Industrial
SIP Fireball Professional 660S Paraffin/Diesel Space Heater - 230v 21kW
- 73,000 BTU/hr Direct Heat Output
- Runs on Diesel or Paraffin
- 461m³ Heating Area
- Sleek Stainless-Steel Casing
- Wheel Kit & Thermostat Available
- User-Friendly Control Panel
Thermobile
Thermobile TA22 Direct Oil Fired Space Heater - 240v 25kW
- 85,350 BTU/hr Portable Direct Heat
- 40 Litre Tank Runs on Diesel or Kerosene
- 600m³/h Airflow
- Fixed Outlet Temperature
- Perfect For Construction, Agriculture & More
- Efficient Operation & Easy Controls
Sealey
Sealey AB1008 Direct Oil Fired Space Heater - 230v 29kW
- 100,000 BTU/hr Portable Direct Heat
- Runs on Paraffin, Kerosene or Diesel
- 883m³/h Airflow
- Designed For Well-Ventilated Spaces
- Automatic Safety Shut-Off
- Built-in Thermostat
Master Climate Solutions
Master B100 Direct Oil Fired Space Heater - Dual Voltage 29kW
- 99,000 BTU/hr Portable Direct Heat
- 44 Litre Tank Runs on Diesel or Kerosene
- 800m³/hr Airflow
- High-Quality Components & Simple Controls
- Overheat Safety Protection
- Optional Thermostat Connectivity
SIP Industrial
SIP Fireball XD100 Diesel/Paraffin Space Heater - 230v 30kW
- 100,000 BTU/hr Portable Direct Heat
- 700m3 Large Heating Area
- Stainless-Steel Structure & Components
- Heavy-Duty Air Pump
- Anti-Tilt & Overheat Protection Features
- Dual LED Thermostat Control Display
Thermobile
Thermobile TA30 Direct Oil Fired Space Heater - 240v 30kW
- 102,420 BTU/hr Portable Direct Heat
- 40 Litre Tank Runs on Diesel or Kerosene
- 600m³/h Airflow
- Fixed Outlet Temperature
- Perfect For Construction, Agriculture & More
- Efficient Operation & Easy Controls
Sealey
Sealey AB1258 Direct Oil Fired Space Heater - 230v 36kW
- 125,000 BTU/hr Portable Direct Heat
- Runs on Paraffin, Kerosene or Diesel
- 917m³/h Airflow
- Automatic Safety Shut-Off
- Ideal for Large Well-Ventilated Spaces
- Built-in Thermostat
SIP Industrial
SIP Fireball Professional P1280S Paraffin/Diesel Space Heater - 230v 38kW
- 131,500 BTU/hr Portable Direct Heat
- Runs on Diesel or Paraffin
- 900m³ Heating Area
- Sleek Stainless-Steel Casing
- Optional Thermostat
- Easy-Use Control Panel
Arcotherm
Arcotherm GE36 Direct Space Heater - Dual Voltage 39kW
- 133,000 BTU/hr Portable Direct Heat
- 42 Litre Fuel Tank
- 605m³/h Airflow
- Automatic Ignition for Quick Start
- Ideal for Warehouses, Construction & Agriculture
- Overheat Thermostat & Post-Ventilation Cooling
Master Climate Solutions
Master B150 Direct Oil Fired Space Heater - Dual Voltage 44kW
- 150,000 BTU/hr Portable Direct Heat
- 44 Litre Tank Runs on Diesel or Kerosene
- 900m³/hr Airflow
- High-Quality Components & Simple Controls
- Overheat Safety Thermostat
- Built to Perform in Challenging Areas
Master Climate Solutions
Master B180 Direct Oil Fired Space Heater - 240v 48kW
- 163,872 BTU/hr Powerful Portable Direct Heat
- Runs on Diesel or Kerosene
- 1550m³/hr Airflow
- Overheat Thermostat
- Ideal for Building Sites & Well-Ventilated Areas
- Premium Components Including 3 Oil Filters
SIP Industrial
SIP Fireball Professional 1645S Oil Fired Space Heater - 230v 49kW
- 167,286 BTU/hr Portable Direct Heat
- Runs on Diesel or Paraffin
- 1154m³ Heating Area
- Sleek Stainless-Steel Casing
- Optional Fireball Thermostat
- Easy-Use Control Panel
Arcotherm
Arcotherm GE46 Direct Space Heater - Dual Voltage 49kW
- 167,000 BTU/hr Portable Direct Heat
- 42 Litre Fuel Tank
- 1400m³/h Airflow
- Automatic Ignition for Quick Start
- Ideal for Warehouses, Construction & Agriculture
- Overheat Thermostat & Post-Ventilation Cooling
Sealey
Sealey AB1758 Direct Oil Fired Space Heater - 230v 51kW
- 175,000 BTU/hr Portable Direct Heat
- Runs on Paraffin, Kerosene or Diesel
- 1070m³/h Airflow
- Automatic Safety Shut-Off
- Designed For Well-Ventilated Spaces
- Built-in Thermostat
Sealey
Sealey AB2050 Kerosene/Diesel Space Heater - 230v 60kW
- 205,000 BTU/hr Powerful Portable Direct Heat
- 56L Tank for 10hr Runtime
- 1189m3/hr Airflow
- Flame-Out Safety Feature
- Sleek Stainless-Steel Finish
- LED Adjustable Thermostat Display
Direct Oil Fired Space Heaters For Fast and Efficient Heat
Direct fired space heaters provide a cost effective way of heating outdoor and well ventilated spaces. Mostly used in industrial settings, these heaters work by passing air through an open flame which quickly warms the area. Direct fired diesel space heaters are capable of handling large amounts of air 100% efficiently, however due to the burning of fuel, they produce fumes and moisture. As a result, a direct oil fired heater can never be used in enclosed, poorly ventilated spaces.
These heaters are best used in large spaces with great ventilation. They are often used in warehouses, factories, garages, construction sites, hangars and material yards providing there is enough ventilation. Direct space heaters are designed to be compact, lightweight and portable so they can be easily moved to provide heat across various sites and locations. Additionally, direct oil fired heaters can operate year-round and work effectively in winter months.
If you need to heat a poorly ventilated space quickly, indirect fired space heaters operate in the same way as indirect fired space heaters, but are set up outside the facility and have clean, warm air ducted inside to remove any risk. Read more about the differences between direct and indirect fired space heaters.
Trusted Direct Fired Heaters
At National Heater Shops, we offer a range of direct diesel fired space heaters in a variety of sizes, from 10kW to over 100kW. We have options from top brands such as Arcotherm, Sealey, Sip and Thermobile amongst others. Trusted by industry experts, these heaters are reliable, robust and portable - providing comfort to many different locations.
Direct Oil Fired Space Heater FAQs
Can I use a direct oil fired space heater inside?
It depends. An area needs to be large and very well ventilated for a direct oil fired space heater to be safe and effective. There are many alternatives to direct oil fired space heaters for inside spaces, however. Check out some of these alternatives in our selections of electric fan heaters, cabinet heaters or waste oil heaters.
What fuel does a direct oil fired heater use?
Many of the models we provide are diesel/paraffin fueled. We also have options available for kerosene, such as the Master B180 Direct Oil Fired Space Heater.