Everyday
What if I reduced my home heating?
What heating-cost difference is implied if you cut a percentage of a bill you already know?
Space heating is the large, seasonal part of many UK energy bills, but the saving from using less heat is not a universal percentage. Insulation, boiler or heat-pump efficiency, how you use the thermostat, and the weather in your region all move the result. Energy Saving Trust advice is about controls and comfort temperatures; Ofgem publishes typical consumption and unit rates that change every quarter. This page does not apply those typical savings to you. You enter a monthly heating cost, a reduction you think is realistic, and how many months you actually heat the home. The output is the estimated difference implied by your assumptions over a run of winters — a sensitivity check, not a guarantee that turning a dial saves a published national figure.
Change this
Results update as you move the controls.
A typical month in the heating season, from your bill.
Your assumption, not a universal saving.
Your result
£270
estimated difference over 5 years
10% of a £540 heating season, on your figures.
- Season cost now
- £540
- Season cost after the cut
- £486
- Estimated difference per year
- £54.00
- Reduction applied
- 10%
£90.00 × 6 months.
User-supplied, not a guaranteed national figure.
What does that mean?
On the heating cost you entered, a 10% reduction over 6 months is an estimated £54.00 a year, or £270 across 5 years. Compare the estimated difference implied by those assumptions. It is not a universal saving, and it is not a forecast of your next Ofgem price-cap period.
At a glance
- Season now£540
- Season after cut£486
Timeline
Year 1
£54.00
First heating season at the reduction you chose.
5 years
£270
Simple total with prices held constant.
Compare scenarios
Your bill, your percentage
Ofgem’s typical domestic consumption values describe an average home, not yours. A 10% reduction on a £90 heating month is simply £9 that month on the arithmetic you typed. Whether a one-degree thermostat change, shorter heating hours, or a new programmer would actually deliver 10% is a property-specific question the sliders will not answer.
Months, not a year of heat
Many UK homes heat for something like October to March. Using six months as a default stops the model pretending that July needs the same boiler hours as January. If you live somewhere colder, or heat water and rooms on the same estimate, stretch the season. Standing charges are usually paid all year and should not be inside the monthly heating box unless you want them in the cut.
Comfort and fabric sit outside
Energy Saving Trust describes programmers, thermostats and radiator valves as ways to heat only when needed. Draughts, loft depth and uninsulated walls change how much energy a given temperature setting uses. This experiment will not invent a fabric upgrade. It will show what happens if the percentage you believe is realistic is applied for several winters.
How we calculated this
Heating season cost each year = monthly heating × months heated. Estimated annual difference = season cost × (reduction ÷ 100). Period total = annual difference × years. The reduction is an assumption you supply, not an Energy Saving Trust or Ofgem forecast for your home. Standing charges, unit-rate changes and weather variation are omitted. This experiment provides estimates for educational purposes and is not financial advice. Actual results vary depending on rates, fees, taxes, inflation and individual circumstances.
Go further
A curated rabbit hole from this question. Each link is a real experiment, not a random suggestion.
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