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How to Reduce Your Heating Oil Consumption

OilCompare Team
28 October 2025
5 min read

Smart Ways to Cut Your Heating Oil Bills

Heating oil is a significant household expense, but there are many ways to reduce consumption without freezing through winter. Here's how to make your heating more efficient.

Insulation: Your First Line of Defence

Poor insulation is the biggest cause of heat loss in UK homes. Before focusing on your boiler, address these common problem areas:

Loft Insulation

  • Heat rises, and an uninsulated loft can account for 25% of heat loss
  • Aim for at least 270mm of insulation
  • DIY-friendly and often eligible for grants

Wall Insulation

  • Cavity wall insulation can reduce heat loss by up to 35%
  • Solid wall insulation is more expensive but very effective for older properties

Draught Proofing

  • Seal gaps around windows, doors, and floorboards
  • Use draught excluders on external doors
  • Check for gaps around pipes and cables entering your home

Heating System Efficiency

Service Your Boiler Annually

  • Improve efficiency by 10-15%
  • Extend boiler lifespan
  • Catch problems before they become expensive repairs

Upgrade Old Boilers If your boiler is over 15 years old, a modern condensing oil boiler could be 15-20% more efficient.

Bleed Your Radiators Air trapped in radiators prevents even heat distribution. Bleed them regularly for optimal performance.

Smart Heating Habits

Lower Your Thermostat Reducing your thermostat by just 1°C can cut heating bills by around 10%. Most people are comfortable at 18-21°C.

Use Programmable Thermostats Set heating to come on 30 minutes before you wake up and turn off 30 minutes before you leave. No need to heat an empty house.

Heat Only Occupied Rooms Use thermostatic radiator valves (TRVs) to reduce heating in unused rooms.

Close Curtains at Dusk Heavy curtains act as insulation. Close them when it gets dark to retain heat.

Monitor Your Usage

Keep track of your heating oil consumption to identify unusual patterns. A sudden increase might indicate:

  • A leak in your system
  • Boiler efficiency problems
  • Insulation issues

The Impact of These Changes

ImprovementPotential Savings
Loft insulationUp to 25%
Cavity wall insulationUp to 35%
Boiler upgrade15-20%
Thermostat reduction (1°C)~10%
Draught proofing5-10%

Don't Forget: Compare Prices Too

Even with excellent efficiency measures, you should always compare heating oil prices before ordering. Prices can vary significantly between suppliers, and using a comparison service like OilCompare ensures you're not overpaying.

Combine efficiency improvements with competitive pricing for maximum savings on your heating bills.

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