Heating range

Diesel infrared heaters — fuel-fired infrared heat for marquees, halls, workshops and large spaces

Heating.

Airrex diesel infrared heaters put direct radiant heat into ventilated workshops, sites and open-sided event structures. They run on HVO (renewable diesel) or conventional diesel and are sized to your space. Quote within 1 business day.

CE declarations — certification evidence on request

Heat, sized to the space

Sized to the space.

Diesel infrared for large covered areas, electric where power and proximity suit — matched to occupancy and exposure rather than guessed.

Commercial-grade units, CE-documented; emissions measured at KYAMK (Finland), reports on request.

The Airrex declarations of conformity and emission reports are available on request.

Confirmed before it ships.

The quote sets out fuel handling, clearances and cable runs for your exact site, so the day holds no surprises.

Choose by use

Match the heat source to the site

Heating should be scoped around space, exposure, power or fuel access, and the way people will use the area. The same unit works as a marquee heater, a workshop heater or a warehouse heater; what changes is the ventilation, the clearances and the output the space needs.

Fuel and ventilation

The Airrex AH-series are direct radiant heaters: the exhaust stays in the space. They suit ventilated or semi-open workshops, sites and open-sided event structures where the air is replaced 1–2 times an hour. For sealed rooms, or anywhere people sleep, the right option is ducted heat by arrangement.

Electric local heat

Electric infrared heaters, including the clamp-mounted gazebo heater, are the quiet, clean option for small spaces, gazebos and pergolas. Electric fan heaters suit counters, covered hospitality points and support spaces with suitable power.

Output band

Start with tent size, target temperature, occupancy, and exposure before choosing the heater model. A hall heater and an industrial heater for large spaces are the same calculation with different numbers.

Site assumptions

Your quote confirms fuel handling, cable runs, clearances, delivery access and safety notes for your site.

Discuss your job

Tell us what the job needs. A specified quote comes back within 1 business day.

Leave a number if you would like us to call about your enquiry.

Takes a minute.

Lead time: next day from stock, 2–3 days on back order.

Airrex / Rex Nordic

Heating products

Guide prices are shown on selected products. Your quote confirms current stock, delivery plan, safety guidance and site requirements.

Airrex AH-500i diesel infrared heater

Rex Nordic / Airrex

Airrex AH-500i

Radiant warmth that reaches your guests and crew straight away, at 11 or 15 kW. Set the temperature once, from the panel or your phone, and the thermostat holds it all night.

Guide price

£2,170 ex VAT£2,604 inc VAT

Heat output
11 kW / 15 kW, selectable
Heated space
Up to 1,500 m³
Airrex AH-900i diesel infrared heater

Rex Nordic / Airrex

Airrex AH-900i

24 kW of radiant heat at full output for the biggest spaces you pitch, fed from a 70 L tank. Set it from your phone and let the thermostat do the rest.

Guide price

£2,870 ex VAT£3,444 inc VAT

Heat output
19 kW / 24 kW, selectable
Heated space
Up to 2,500 m³

Seen what fits?

Tell us the job and a specified quote comes back within 1 business day.

Common questions

FAQ

How do I size heating for a tent or marquee?

By the enclosed volume, the target temperature, the insulation and walls, and the outside conditions — we scope the heater to the space rather than guess from floor area.

What types of event heating are available?

Diesel infrared heaters, electric infrared heaters for small spaces, gazebos and pergolas, and electric fan heaters. A diesel infrared unit is a radiant heater: it warms people and surfaces rather than the air. The right one depends on the space, ventilation, available power, and whether you are heating the air or the people.

Are the heaters safe inside a tent?

Yes, in a ventilated or open-sided tent. The diesel infrared units are direct heaters and their exhaust stays in the space, so a sealed tent takes ducted heat by arrangement. We advise on heater type, placement, clearances and ventilation for the structure.

Can heating run without mains power?

Diesel infrared runs independently of mains; electric units can run off Instagrid battery power where mains is awkward.

Diesel or electric heating?

Diesel for high output and off-grid sites; electric infrared or fan heat for clean, controllable heat in small spaces, gazebos and pergolas where power allows. We match it to the deployment.

How a quote works

Specified, then quoted

Tell us the application, the space and the requirements. Your specialist confirms the right structure, documentation and accessories before anything is ordered.

01

Application

Emergency services, public sector, event operators, hospitality or trade.

02

Space & requirements

Structure size, usage, climate, power and deployment context.

03

Quote pack

Enough detail, with documentation, for a firm price before anything is ordered.

CE declarations — certification evidence on requestTrusted across public sector, festivals & motorsport — see case studiesWe reply within 1 business day