Types of Heating Oil in the UK: A Comprehensive Overview
Heating oil remains an essential fuel source for many households and businesses in the UK, especially in rural and off-grid areas where natural gas supply is unavailable. It is stored in tanks on-site and used in oil-fired boilers and heaters to provide warmth and hot water. While heating oil might seem straightforward, there are different types with distinct characteristics, uses, and regulatory considerations. Understanding these types of heating oil helps consumers choose the right fuel for their needs.
What Is Heating Oil?
Heating oil is a refined petroleum product designed for use in heating systems. It is similar to diesel but refined to a higher standard suitable for burning in boilers and furnaces. Delivered in bulk to homes and businesses, it is stored in tanks until used.
The Two Primary Types of Heating Oil in the UK
The UK market primarily uses two types of heating oil: Kerosene (28-second oil) and Gas Oil (35-second oil or red diesel). Both differ in viscosity, cost, and application.
1. Kerosene (28-Second Oil)
Kerosene, also known as 28-second oil, gets its name from its viscosity it flows through a standard nozzle in approximately 28 seconds at 20C.
-
Usage: It is the preferred choice for domestic heating systems in the UK. Kerosene fuels oil-fired boilers and heaters in residential properties.
-
Benefits: Burns relatively cleanly with fewer particulates and less soot, which helps maintain boiler efficiency and reduces maintenance.
-
Cost: It tends to be more expensive than gas oil because it carries higher fuel duty (tax).
-
Environmental Impact: While kerosene is a fossil fuel, it produces fewer emissions and particulate matter compared to heavier oils, making it better suited for home use.
2. Gas Oil (35-Second Oil or Red Diesel)
Gas oil is thicker and less refined than kerosene, flowing more slowlyabout 35 seconds in the viscosity test. It is dyed red to distinguish it from standard diesel due to different tax rates.
-
Usage: Commonly used in commercial, agricultural, and industrial heating systems, as well as in some vehicles and machinery.
-
Benefits: Gas oil is cheaper due to lower fuel duty but is restricted from domestic use by law.
-
Cost: The lower tax makes it a cost-effective choice for approved uses.
-
Environmental Impact: Gas oil produces more soot and particulate emissions, potentially increasing maintenance needs and pollution.
The Rise of Bioheating Oil
With growing environmental concerns and carbon reduction targets, bioheating oil has emerged as a greener alternative. It is a blend of traditional heating oil with renewable biofuels derived from vegetable oils or animal fats.
-
Advantages: Reduces carbon emissions and can often be used in existing oil boilers without modification.
-
Availability: Many suppliers now offer blends containing up to 30% biofuel content.
Regulations and Safety
In the UK, kerosene is the only type of heating oil legally approved for most domestic heating systems. Gas oil use is confined to commercial and agricultural applications. Proper storage in approved tanks and regular maintenance of boilers are essential to ensure safety and efficiency.
Conclusion
For UK households, kerosene remains the standard heating oil due to its clean-burning properties and legal approval. Gas oil, while more affordable, is primarily for commercial and agricultural use. Bioheating oil is gaining popularity as an eco-friendly alternative that supports the transition to sustainable heating. Understanding the types of heating oil helps consumers make informed choices regarding cost, efficiency, and environmental impact.
