Indirect Space Heaters

Safe, Clean Heat With An Indirect Space Heater

Indirect oil fired space heaters are designed to deliver safe, temporary heat to large areas. These units are the ideal solution for industrial, commercial and construction environments.

Indirect space heaters are versatile and have a wide range of applications, from being commonly used on construction sites, to use in marquees, warehouses, event spaces and sometimes used to assist in pest control heat treatment.

Indirect oil fired space heaters are portable units that are designed to sit on the outside of a premises and feature ducting which vents the warm, clean air produced by the unit into the desired area. Heat is produced by passing air over an open flame within the unit, where the fumes are expelled and the clean air safely ducted away from the device.

Make sure not to get confused with direct oil fired space units, as direct space heaters are designed to be operational within large, well ventilated space as they do not get ducted. Read more about the differences between both direct and indirect fired space heaters.

Robust Indirect Heaters From Trusted Brands

At National Heater Shops, we have a wide range of units from a selection of trusted and reliable brands and manufacturers such as Arcotherm, Thermobile, Master and Sealey amongst others. These units are robust and created with safety, efficiency and effectiveness in mind.

Many models feature large tanks, and can be used with extra fuel tanks to prolong run times. They are also scalable, meaning multiple units can be used at once providing the infrastructure is available to accommodate, and they can be used in tandem alongside other heaters such as electric fan heaters or infrared heaters.

Choosing The Correct Indirect Fired Space Heater

When choosing which indirect heater is best for you, there are a few things to consider, including:

• Fuel availability

• Portability

• Where the unit will sit and where the ducting will lead

• Kw/BTU requirements

• Heat output requirements

• Operation times

• Ventilation

If you are still undecided on which heater best suits your needs, contact us or speak to our friendly sales team.

Additionally, use our heating calculator to help decide on the size and heat output of the unit needed for your space.

At National Heater Shops, we also sell complete kits such as the Medium Space Heater Package (Arcotherm Indirect) which include ducting, a flue and rain cowl.

Indirect Oil Fired Space Heater FAQs

What fuel do indirect fired space heaters use?

We have options available for indirect heaters that require diesel, kerosene, gas, natural/LPG gas, biodiesel, automatic oil or HVO.

Which industries commonly use indirect space heaters?

Indirect space heaters are used across a multitude of industries, including construction, manufacturing, warehousing, agriculture, events, and emergency response applications.

When should I use an indirect diesel space heater?

These units are recommended whenever people are working within the heated area or when air quality must be maintained. They are best used in enclosed spaces that are poorly ventilated, where their direct counterparts cannot be used safely.

Can indirect heaters be connected to ducting?

A vast majority of indirect space heaters are designed for use alongside ducting, as the safe, clean warm air needs to be filtered and directed towards the intended area. You can browse our selection of packages or ducting to find options for this ducting.

Related Guides and Articles:

• Choosing the correctly sized heater for your space

• Everything you need to know about gas heaters

• The best ways to heat outdoor events

• Space heater fuel guide

• What is a space heater?