The Sun, on Climate, 6 November 2026

3.0out of 10Minor

Secret boiler button this winter, says Octopus Energy

Tap a highlight to see why it matters.1 finding

Comment now Next OCTOPUS Energy has revealed a one boiler hack which could save Brits dozens of pounds off their winter bills. The energy supplier also gave an additional tip to help households save money on costly bills ahead of the festive season. The change is completely reversible and takes just minutes – but could save you up to £65 Source: Rex As the days grow shorter, colder and darker, Brits across the country may start to see their energy bills creep up.

Advertisement But, Octopus Energy has revealed one simple setting – which takes just minutes to change – that could save you up to £65 on your bills this winter. Sign up for the Money newsletter Thank you! Email address Please provide a valid email. Your info will be used in accordance with our Privacy Policy You'll now receive top stories, breaking news, and more, straight to your email. The British energy supplier said that combi boilers (also known as combination boilers) “work best” when they heat radiators to 60C or below.

But, the firm notes, usually these boilers “flow temperatures” are set too high by default – typically between 70C to 80C – costing households precious pounds in wasted energy. Read more Money News UPROOTED Beloved UK garden centre selling £20 Xmas trees confirms closure after 30 years SAVE THE DATE Exact date Asda will give away £15 to shoppers in pre-Christmas boost As explained by innovation agency Nesta, the “flow temperature is the temperature to which your boiler heats the water that supplies your radiators”.

Instead, Octopus Energy recommends setting your flow temperature to between 55C and 60C on your combi boiler . Although your home may feel colder at first, this is simply because your radiators will not be as hot and may take longer to heat up your house. This can be easily fixed by starting your heating up 15 to 20 minutes earlier, giving your home more time to become warm. Most read in Money HOME MOAN Biggest ‘deal killer’ features knocking over £30,000 off YOUR home value JOBS ARMY Major UK employer offering 40 apprenticeships starting next year - how to apply NORT JUST FOOD Shirtless James Norton stars as hunky Santa in feelgood M&S Christmas ad AXE FALLS British telecoms giant slashes 11,700 jobs in brutal year-long cull Households are able to control the flow temperature directly from their boiler, and can use an interactive online tool by Nesta to help change their setting depending on their combi boiler display type.

Advertisement This may appear in the form of a “secret” button or a setting through your boiler display. Combi boilers also keep an amount of water heated up when it is not in use, the firm notes. By turning this off, households can save money in gas bills whilst still maintaining hot water temperatures. Comment now

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What we found (1)

The Sun passes on Octopus Energy's advice to lower the flow temperature on combi boilers, explains what the setting is, and notes the home may warm more slowly. The headline firms up the saving: it promises the button 'can slash £65' when the body only says it could save up to £65. Nothing else in the piece misleads.

  1. Headline goes beyond the article

    Minor

    “can slash £65 off your energy bills”

    Why this matters
    The headline says the setting 'can slash £65' off bills, a flat figure with no 'up to' and no 'could'.
    The impression it gives
    A reader expects to save £65 this winter by changing one setting.
    The context
    The body gives £65 only as a ceiling. Octopus Energy says the change 'could save you up to £65', so most households would save less. The headline turns a best case into a typical result.

    How we know

    • Elsewhere in the article“could save you up to £65 on your bills this winter”
    • Elsewhere in the article“could save Brits dozens of pounds”

    Show it in the article

What it gets right

  • “Although your home may feel colder at first, this is simply because your radiators will not be as hot and may take longer to heat up your house.”

    It tells readers the trade-off of the change instead of presenting only the saving.

  • “As explained by innovation agency Nesta, the “flow temperature is the temperature to which your boiler heats the water that supplies your radiators”.”

    It explains the technical term and names its source.

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