Indirect diesel heater hire
Fume-free heating hire solutions suitable for large open spaces with limited ventilation
A specialist industrial indirect fired heater rental service
Aggreko’s indirect diesel fired heaters (or IDF heaters) can quickly and efficiently deliver large volumes of clean, fully fume-free, dry air into large, enclosed spaces.
Whether it’s a construction site, marquee, warehouse, workshop or arena you need to heat. we can help. Our indirect fired heater rental fleet offers the flexibility you need.
They’re highly portable, range from 65kW to 350kW, and have high-quality fuel filters that provide trouble-free running. We can also equip an external thermostat – giving you added control and fuel efficiency.
Get your site up and fully functional as quickly as possible. Contact our specialists to discuss our indirect diesel heater hire service, or scroll down to explore our full product range below.
65 - 350 kW indirect diesel heater hire
Indirect diesel heater hire range
What is an indirect diesel fired heater?
An indirect diesel fired heater is a high-capacity portable heater that burns diesel fuel to create heat, but keeps all combustion separate from the warm air it delivers.
How does an indirect space heater work?
Our indirect heaters are diesel fired. They feature a sealed combustion chamber where the flame is enclosed. As the flame burns, it warms a heat exchanger.
Air gets drawn into the heater by a fan and passed around the heat exchanger, causing the air temperature to rise. It never comes into contact with the flame or the combustion fumes, making it 100% clean and fume-free.
This warm air is subsequently delivered out into the space via ducting, while the exhaust fumes from the combustion process are expelled via a flue or chimney.
Safe heating for enclosed and poorly ventilated space
Flexibility matters, which is why we’ve built our indirect diesel heater hire fleet to be versatile. Our heaters can deliver clean, fume-free heat in a variety of different applications where people, animals and food are present, including:
- Building sites – to dry out buildings during construction, or after spells of bad weather or flooding.
- Marquees, stadiums, halls and arenas – to provide comfort heating during events in enclosed spaces with limited ventilation.
- Food and drink production and processing facilities.
- Manufacturing facilities and warehouses – to keep storage temperature just right during peak production periods, or during HVAC system maintenance or downtime.
- Film and TV sets – to deliver consistent comfort heating in studios, filming locations, production offices, catering areas and on stages.
- Shipping vessels and rigs – to ensure logistical, operational and living quarter spaces are efficiently heated to the right temperatures.
Why hire an indirect diesel heater?
1. Expert site surveying and correct heater sizing
Getting the right output is critical for safety, comfort and fuel efficiency. Hire gives you access to specialists who assess your space, heat load, airflow and ducting requirements to specify the right solution from the start.
2. Delivery, installation and commissioning included
There’s no need to manage logistics or specialist labour. Engineers deliver the heaters, install all ducting and flues, set up fuel supply and commission the system so it’s safe, compliant and ready to run.
3, A temporary heating design built around your site
Hire allows you to deploy a tailored solution – from a single heater to a fully engineered temporary heating package, integrated with dehumidifiers, ventilation or wider temperature-control equipment if needed.
4. Remote monitoring for performance and uptime
With Aggreko Remote Monitoring (ARM), you gain real-time visibility of fuel levels, performance trends and alerts. Issues are detected early and resolved before they cause downtime, improving efficiency and safety.
5. 24/7 technical support throughout the hire
If conditions change or equipment needs adjustment, round-the-clock engineers are on hand. This ensures consistent heat delivery during critical operations, especially in harsh weather or time-sensitive environments.
6. No capital outlay – full flexibility and scalability
Hiring avoids upfront purchase costs and lets you scale capacity up or down as your project evolves. It’s ideal for seasonal demand, short-term works, emergency heating or sites where conditions change regularly.
Industry-leading IDF heaters
Here, at Aggreko, we constantly strive to innovate and improve our fleet to give you best possible performance. With an indirect diesel heater hire package from us, you can expect:
- Industry-leading soundproofing – we understand the importance of keeping noise levels to a minimum
- Fork pockets and lifting eyes – for easy installation and manoeuvrability across your site
- Fan-only functionality – to ensure you get fresh, warm air
- Full safety controls and a fan-only cool down period
- Full internal heat regulator sensing for improved efficiency
Why choose Aggreko for indirect fired heater rental?
- We have a global network of specialists - ready to build an indirect space heater hire package based on your budget and technical requirements.
- We can manage delivery and installation - no site or location is too remote for our team.
- We have a huge range of industry-leading IDF heaters, available for short and long-term hire.
- Our Remote Monitoring service enables us to identify performance inefficiencies and technical faults, so, we can rapidly resolve them.
- You'll have access to our technical support team, whenever you need it - 24/7, 365.
- We have more than 60 years' worth of global experience and innovation behind us.
Want to find out more about our indirect fired diesel heater fleet? Contact our team to discuss your requirements today.
FAQs About IDF Heater Hire
An indirect diesel fired heater offers several advantages over a direct fired heater, particularly when you need clean, safe and controlled heat in enclosed or sensitive environments.
Advantages of indirect diesel fired heater vs direct fired heaters include:
1. 100% fume-free warm air
Indirect units use a sealed combustion chamber and heat exchanger, so all exhaust gases are vented outside. Only clean, warm air enters the workspace. Direct fired heaters release products of combustion into the same areas they heat, making them unsuitable for many occupied or poorly ventilated spaces.
2. Safe for enclosed and sensitive environments
Because there’s no exposure to fumes, odours or combustion by-products, indirect heaters are recommended:
- Warehouses and workshops
- Marquees and events
- Construction welfare areas
- Food and beverage environments
- Manufacturing and processing spaces
Direct fired heaters generally require high ventilation rates and are often restricted in these applications.
3. Better moisture control
Indirect heaters blow out dry heat, helping to manage humidity and air processes like curing, drying or climate-sensitive manufacturing. Direct fired heaters add water vapour into the air as part of the combustion process.
4. More efficient heat distribution
Indirect heaters support long duct runs, allowing warm air to be distributed exactly where it’s needed. This helps maintain consistent temperatures across larger or more complex spaces.
5. Improved worker comfort and compliance
Cleaner air, lower odour and lower humidity help create a safe, more comfortable environment, supporting health and safety compliance and improved productivity.
6. More suitable for critical or high-risk applications
Any environment where product contamination, air quality or safety is a concern will benefit from indirect technology. That includes construction drying projects, temporary structures, emergency heating and controlled industrial environments.
We can have an IDF heater delivered, installed and fully operational within hours, depending on your location and site conditions.
Our team mobilises quickly because temporary heating is often a time-critical requirement. We handle everything – from transport and positioning to ducting, flue installation and fuel integration – ensuring a safe, compliant setup from the outset.
Where a site survey is required, we move fast. Our engineers assess the space, confirm the correct heater size and airflow, and design the most effective layout before installation begins.
Once on site, commissioning is immediate. We verify performance, run safety checks and make sure your team is comfortable with system operation. With remote monitoring and 24/7 support included, you can be confident your heating solution will stay online and performing optimally from day one.
Throughout the hire period, Aggreko provides a fully managed service designed to keep your heating solution running safely, efficiently and without interruption. This includes:
- Proactive maintenance built into the hire
All service is scheduled and carried out by our engineers, ensuring the heater, ducting, fuel system and controls continue to perform as specified. Any wear, filter changes or operational adjustments are handled quickly and professionally.
- Continuous performance oversight with remote monitoring
ARM lets our specialists track fuel levels, operating hours, performance trends and system alarms in real time. If something needs attention, we act before it affects your operation, minimising downtime and improving fuel efficiency.
- 24/7 technical support and rapid response
Our team is available around the clock. Whether you need operational advice, a performance adjustment or a site visit, support is always on hand. For critical environments or extreme weather, this ensures you are always protected.
- Responsibility for reliability and compliance
We manage safety checks, system optimisation and all operational upkeep, freeing your team from the burden of heater maintenance. You get a stable, compliant heating solution without any additional workload.
In short, hiring from Aggreko means you’re gaining a dedicated technical partner focused on keeping your site warm, safe and productive.
When you deploy an IDF heater, safety, compliance and environmental performance must be built into every stage – from system design through to day-to-day operation. Aggreko’s approach is shared around ensuring your site meets the highest standards while delivering reliable, fume-free heat.
Safety considerations include:
- Separate combustion from the air stream and venting exhaust gases outside, making them suitable for enclosed, sensitive or people-occupied environments.
- Correct flueing and ducting to control heat distribution while protecting personnel and equipment.
- Built-in safety controls, such as high-temperature shutdowns, flame-failure protection and robust fuel management systems, to ensure the heater operates safely under changing site conditions.
- On-site commissioning and checks before handover. Aggreko specialists confirm airflow, temperature, fuel integration and emergency shut-off systems meet requirements.
Compliance considerations include:
- Adherence to industry standards through designs that comply with relevant health, safety and environmental regulations, including heating requirements for temporary structures or construction environments.
- Documented procedures and certification, including risk assessments, method statements and commissioning records, to stay audit-ready and compliant.
- Suitability for regulated industries, such as food and beverage, manufacturing, healthcare and pharmaceuticals, by delivering clean, dry air.
Environment considerations include:
- Cleaner combustion and reduced emissions by using efficient burners and high-quality filtration to lower particulate and NOx emissions.
- Improved fuel efficiency through correct sizing, high-efficiency heat exchangers and remote monitoring.
- Low-noise operation and careful placement minimise disruption, supporting environmental and community considerations.
At the end of your hire period, Aggreko manages the full decommissioning and removal process so your site can return to normal quickly, safely and without disruption.
Once your heating requirement is complete, simply let us know your preferred off-hire date. We’ll confirm final operating details, check fuel status and schedule the removal at a time that works for your site.