As temperatures drop and boilers start working overtime, many households wonder whether switching to premium heating oil could reduce fuel use and improve boiler performance. In this guide, we explain what premium kerosene is, how it differs from standard heating oil, and why choosing a higher-grade fuel can save you money throughout the winter.
Premium heating oil - often called premium kerosene or K+ - is a higher-grade version of standard kerosene used in domestic boilers.
It contains added performance-enhancing additives designed to:
Because premium kerosene burns more cleanly, it supports better boiler health and reduces the risk of breakdowns in colder months.
If you’re wondering whether upgrading is genuinely worthwhile, here’s how the two fuels compare:
Premium heating oil burns more efficiently than standard kerosene, meaning:
Standard heating oil can create carbon fouling over time. These deposits can:
Premium oil contains detergents that minimise deposit build-up and support smoother boiler operation.
Even though premium kerosene typically costs slightly more per litre, many households see:
For larger properties or older systems, the savings can be significant.
In most cases - yes.
If you want a cleaner-running boiler, reduced maintenance risk, and long-term cost savings, premium heating oil is the smarter choice. It’s particularly beneficial if:
Premium heating oil supports both short- and long-term boiler health, making it a reliable upgrade for most households.
Cold snaps put exceptional strain on boilers. Using a cleaner, more efficient fuel helps prevent:
Premium heating oil maintains performance even in sub-zero temperatures, helping your system stay reliable when you need it most.
Does premium heating oil burn longer?
Yes - its cleaner burn means your boiler uses fuel more efficiently, often reducing overall consumption.
Can premium kerosene reduce boiler maintenance?
Definitely. Because it helps prevent deposits and sludge, premium oil reduces the wear and tear that often leads to engineer callouts.
Is premium heating oil suitable for all boilers?
Yes. It works with virtually all domestic kerosene-fired heating systems, including Agas and range cookers.
How much more does premium oil cost?
Typically, only a few pence per litre more - but often offset by lower usage and fewer maintenance issues.
Can I use K+ in my AGA?
No - K+ is designed specifically for use in oil-fired boiler systems. If you heat your AGA with kerosene, we offer a dedicated alternative called AGA+, which is formulated to support clean, efficient performance in cooker systems.
Keep your home warm, efficient, and protected this winter.
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