Heating Oil Additive Savings Calculator
Calculate how much you could save by using heating oil additives. Factor in your annual consumption, boiler age, and tank condition to see potential savings from improved efficiency and reduced maintenance.
How Heating Oil Additives Work
Combustion Efficiency
Quality heating oil additives improve combustion by ensuring more complete burning of fuel. This can improve efficiency by 3-5%, meaning you extract more heat from each litre of oil and reduce soot buildup.
Tank & System Protection
Additives contain stabilisers and anti-corrosion agents that protect your tank and fuel lines from rust and sediment. This extends equipment life and prevents costly blockages in filters and burner nozzles.
Sludge Prevention
Over time, heating oil can degrade and form sludge, especially in tanks that aren't topped up regularly. Fuel stabilisers in additives prevent this degradation, keeping your oil fresh and your system running smoothly.
Reduced Maintenance
Cleaner combustion means less soot and carbon buildup in your boiler's heat exchanger. This can extend service intervals and reduce the frequency of filter changes and nozzle replacements.
Key Benefits of Heating Oil Additives
- Improved combustion efficiency (3-5% fuel savings)
- Extended boiler service intervals
- Protection against tank corrosion and sludge
- Cleaner burner and heat exchanger
- Fewer filter and nozzle replacements
- Reduced carbon emissions
Important Considerations
- Quality matters - Choose reputable brands specifically designed for kerosene/28-second heating oil, not diesel additives.
- Follow dosage instructions - More isn't better. Overdosing can cause issues with burner performance.
- Check boiler warranty - Some manufacturers specify approved additives. Check your manual or contact the manufacturer.
- Regular servicing still essential - Additives complement, but don't replace, annual boiler servicing.
Our Calculation Sources
- OFTEC (Oil Firing Technical Association) - Guidance on heating oil maintenance, additives, and boiler efficiency standards.
- Energy Saving Trust - UK household heating costs and efficiency improvement potential.
- Department for Energy Security & Net Zero - UK energy statistics and household consumption data.
- Which? Boiler Service Guide - Average UK boiler service costs and typical maintenance requirements.
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Frequently Asked Questions About Heating Oil Additives
Are heating oil additives worth it?
For most UK households using heating oil, additives are worth the investment. They typically cost £10-25 per year (for 1,500-2,000 litres) but can save £40-100+ annually through improved combustion efficiency (3-5% fuel savings), reduced maintenance costs, and extended equipment life. The benefits are even greater for older boilers and tanks where sludge and deposits are more common.
How much can heating oil additives save me?
Typical savings from heating oil additives range from £40-120 per year for an average UK home. This includes fuel savings of 3-5% from improved combustion efficiency (worth £30-60 at current prices), plus reduced maintenance costs from fewer filter changes, cleaner nozzles, and extended service intervals. Use our calculator above for a personalised estimate.
Do heating oil additives really work?
Yes, quality heating oil additives work by improving combustion, preventing sludge formation, and protecting your tank and fuel system. Independent testing and industry research shows efficiency improvements of 2-5%. The key is using a reputable product specifically designed for kerosene/28-second heating oil, not diesel additives, and following the correct dosage.
What is the best heating oil additive UK?
The best heating oil additives for UK homes are multi-function products that combine combustion improvers, fuel stabilisers, and anti-corrosion agents. Look for products specifically formulated for kerosene heating oil (28-second oil). Popular options include premium fuel treatments from heating oil suppliers and specialist additives from brands like Exocet and Drivol.
When should I add heating oil additive?
Add heating oil additive when you receive a fresh delivery of oil - this ensures proper mixing throughout your tank. For best results, add the additive to your tank just before or during the delivery. Most additives treat 500-1000 litres per dose, so check the product instructions and match the dosage to your delivery size.
Can heating oil additives damage my boiler?
Quality heating oil additives designed for kerosene will not damage your boiler when used correctly. However, using diesel additives, overdosing, or using poor quality products can potentially cause issues. Always use additives specifically formulated for heating oil, follow dosage instructions, and check your boiler manufacturer's recommendations if in doubt.
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