Reliable Heating Fuel for Commercial and Industrial Premises
Keep your operations running smoothly with dependable Industrial Heating Oil (IHO) from Certas Energy, the UK’s leading supplier of commercial heating fuels. We provide high-quality, BS 2869-compliant IHO products at competitive prices, delivered nationwide.
Get a Industrial Heating Oil QuoteUnderstanding Industrial Heating Oil (IHO)
Industrial Heating Oil (IHO) is a type of liquid fuel designed for use in commercial and industrial heating applications such as boilers, furnaces, and space heaters. It offers a cost-effective heating solution for premises including warehouses, manufacturing facilities, agricultural buildings, public institutions, and more.
IHO is not a single product but a category that includes different fuel types, such as red diesel (also known as gas oil), Kerosene, and Certas Energy’s proprietary blend, Therma35. These fuels are all formulated to meet heating performance demands while complying with BS 2869 standards.
Gas Oil, Kerosene, and Therma35
Industrial Heating Oil includes several fuel types designed for different equipment and needs. All meet the BS 2869 quality standards. These include:
Gas Oil (Red Diesel – BS 2869 Class D)
Kerosene (BS 2869 Class C2)
Therma35 (BS 2869 Compliant Heating Oil)
Also known as Red Diesel because of its marker dye, Gas Oil is used in many industrial heating systems like boilers, dryers, and furnaces, often including older equipment. Note: The red dye indicates a rebated fuel with specific rules regarding its use, primarily intended for eligible off-road vehicles, machinery, and heating applications.
Also called Heating Oil, Kerosene is a lighter fuel that is more sustainable than Gas Oil. It is used in domestic and commercial heating, especially in modern boilers and heaters needing lower sulphur fuel for efficiency.
This is Certas Energy’s proprietary heating oil blend. It was developed as a cost-effective alternative fuel for industrial and commercial heating. Therma35 is designed for performance in systems previously using Gas Oil and fully complies with BS 2869 heating fuel standards, offering a cost-effective heating option.
Commercial Heating grades explained (BS 2869)
Certas Energy supplies IHO products that meet or exceed BS 2869 fuel specifications:
Class C1: A kerosene-type heating oil for specialist heating systems that require lower viscosity.
Class C2: A gas oil-type fuel suited to a wide range of industrial boilers and burners.
Selecting the correct grade ensures equipment efficiency and longevity. If unsure, our fuel experts are here to help.
Why choose Certas Energy as your IHO supplier?
When you partner with Certas Energy, you’re choosing a reliable supplier backed by decades of industry experience. It means partnering with the UK’s largest independent fuel distributor, dedicated to powering businesses reliably and safely.
With over 130 UK depots, on-time deliveries which minimise operational downtime, over 900 tankers on the UK roads and strict safety standards, we’re guaranteed to be reliable and efficient.
Unrivalled Nationwide Coverage: Our network of over 130 depots ensures reliable IHO delivery across the UK, wherever your business is located.
On-Time Delivery: We understand downtime costs money. Our industry-leading logistics ensure your fuel arrives when expected.
Decades of Fuel Expertise: With over 20 years of experience, we know how to support your business’s specific energy needs.
Dedicated Account Management: Benefit from a single point of contact who understands your requirements and provides personalised service.
Safety First, Always: Rigorous safety protocols govern our deliveries, protecting your site, staff, and the environment. We are committed to the highest operational standards. Our accreditations and standards
Your IHO Questions Answered
What exactly is Industrial Heating Oil (IHO)?
IHO is a liquid fuel, typically based on gas oil or kerosene components, specifically blended for use in commercial and industrial heating applications like boilers and furnaces. It meets BS 2869 standards (usually Class C1 or C2).
How is IHO different from Red Diesel (Gas Oil) or Kerosene?
IHOs are fuels and oil specifically chosen for heating uses. Red Diesel (Gas Oil) can be used for heating but is also associated with off-road machinery use. Kerosene (BS 2869 Class C2) is primarily used for heating and C1 IHOs are kerosene-based. IHO (especially C2) is generally more cost-effective than Red Diesel for pure heating use. Our Therma35 product is a specific type of heating oil designed as a direct Gas Oil alternative.
What are the BS 2869 C1 and C2 IHO grades?
BS 2869 is the British Standard for heating oils. Class C1 is a kerosene-type fuel, while Class C2 is a gas oil-type fuel. They differ in properties like viscosity and are suited to different types of burners. Check your equipment manual or consult our team if unsure.
How do I order IHO from Certas Energy?
Simply use our online contact form or call us on 0345 600 4040. We’ll discuss your needs, provide a price, and arrange delivery.
What areas do you deliver IHO to?
We deliver IHO nationwide across the UK thanks to our extensive network of over 130 depots.
How is the price of IHO determined?
IHO prices fluctuate based on global oil markets, refinery costs, distribution expenses, and order volume. We always aim to provide competitive pricing. Request a quote for the latest price.
What is the minimum amount of IHO I can order?
Minimum order quantities can vary by location and delivery logistics. Please contact us to discuss your specific requirements.
Is Therma35 the same as IHO?
Therma35 is Certas Energy’s brand of heating oil, specifically designed as a cost-effective, drop-in replacement for Gas Oil used in heating applications. While it’s a type of industrial heating oil, it has specific properties.
Are there specific storage requirements for IHO?
Yes, IHO must be stored in a suitable, bunded tank that complies with UK regulations to prevent leaks and environmental damage. We can advise on storage solutions.
