Types of Heating Oil in the UK: What You Should Know
Heating oil is an important fuel source for many homes and businesses across the UK, especially in rural areas where mains gas is unavailable. Stored in tanks on-site, heating oil is used in oil-fired boilers and heaters to provide warmth and hot water. However, heating oil is not a single product; there are different types with distinct characteristics, uses, and regulations. This article explains the main types of heating oil available in the UK and what sets them apart.
What is Heating Oil?
Heating oil is a refined petroleum product specifically designed for use in heating systems. It is similar to diesel but refined differently to ensure it burns efficiently and cleanly in boilers and heaters. Heating oil is delivered in bulk to homes or businesses and stored in tanks until needed.
The Main Types of Heating Oil in the UK
The UK primarily uses two types of heating oil: Kerosene (28-second oil) and Gas Oil (35-second oil or red diesel). These oils vary in viscosity, taxation, applications, and environmental impact.
1. Kerosene (28-Second Oil)
Kerosene is the most commonly used heating oil for domestic purposes in the UK. The name 28-second oil refers to its viscosityit takes about 28 seconds to flow through a standard test nozzle at 20C.
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Usage: Mainly used in homes to fuel oil-fired boilers and heaters.
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Advantages: Burns cleanly with fewer particulates and soot, which helps maintain boiler efficiency and reduces maintenance.
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Cost: Typically more expensive than gas oil because it carries a higher fuel duty (tax).
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Environmental Impact: While still a fossil fuel, kerosene produces fewer emissions and particulates compared to heavier oils, making it a cleaner option for indoor heating.
2. Gas Oil (35-Second Oil or Red Diesel)
Gas oil, also known as red diesel due to the red dye added for taxation, is thicker and less refined than kerosene. It has a higher viscosity, taking about 35 seconds to flow in the standard test.
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Usage: Used mainly in commercial, agricultural, and industrial heating systems, as well as some machinery and vehicles.
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Advantages: Cheaper than kerosene due to a lower fuel duty.
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Cost: Less expensive but legally restricted from domestic heating use.
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Environmental Impact: Produces more soot and particulates, which can lead to higher emissions and increased maintenance needs.
Bioheating Oil: The Greener Alternative
Bioheating oil is an emerging fuel option that blends traditional heating oil with renewable biofuels made from vegetable oils or animal fats.
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Benefits: Reduces carbon emissions and can generally be used in existing boilers without modification.
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Availability: Many suppliers offer blends with up to 30% biofuel content, supporting environmental sustainability efforts.
Safety and Regulations
Kerosene is the only heating oil approved for most domestic heating systems in the UK. Gas oils use is limited to commercial and agricultural sectors due to taxation laws. Proper storage in certified tanks is crucial to prevent leaks and contamination. Regular boiler servicing ensures safe and efficient operation.
Conclusion
For UK homes, kerosene remains the standard heating oil due to its clean-burning properties and legal approval. Gas oil is mainly reserved for commercial and agricultural use because of its lower cost but higher emissions. Bioheating oil offers a promising eco-friendly alternative that works with existing heating systems. Understanding these types of heating oil helps consumers make informed choices based on cost, efficiency, and environmental impact.
