If you've opened an energy bill recently and done a double-take at the total, you are far from alone. Despite some relief from the peaks of 2022 and 2023, UK households are still paying significantly more for gas and electricity than they were five years ago. The average dual-fuel bill sits at roughly £1,700 to £1,800 a year for a typical home — and for many families, it's considerably higher.
The good news is that there is genuine room to bring that figure down, often without any major spending or sacrifice. A combination of smarter habits, low-cost improvements, and the right tariff can make a real difference to what lands in your direct debit each month.
Check Whether You're on the Best Tariff
The single fastest action most people can take is checking whether they're on a competitive tariff. Millions of UK households remain on their supplier's standard variable rate by default — which is capped by Ofgem, but not necessarily the cheapest option available to them.
Fixed-rate deals have returned to the market in meaningful numbers, and depending on your circumstances, locking in a rate for twelve or twenty-four months could save you £100 to £300 compared with staying on a variable plan. Use a comparison site like QuidCompare to check current rates against your existing deal — you'll need your annual usage in kWh, which is printed on any recent bill.
Before switching, check for exit fees on your current contract and make sure any new deal is available in your postcode, as some regional variation exists.
Turn Down Your Boiler Flow Temperature
This is arguably the most underrated tip in home energy saving, and it costs nothing. Most combi boilers are factory-set with a flow temperature of 80°C, which is far higher than a modern well-insulated home needs. Turning this down to between 55°C and 60°C — a setting usually accessible via a dial on the front of your boiler — can reduce gas consumption by 6 to 8 per cent with no noticeable difference in comfort.
This works because the boiler runs more efficiently at lower temperatures, cycling less and condensing more effectively. On a bill of £900 a year for gas, that's potentially £50 to £70 back in your pocket for a five-minute job.
Draught-Proof Your Home
A significant proportion of heat loss in UK homes happens not through walls or roofs, but through gaps — around window frames, under doors, through letterboxes, and around pipework. Draught-proofing is one of the highest-return improvements available, with the Energy Saving Trust estimating savings of up to £125 a year for a detached house.
Self-adhesive foam strips around window and door frames cost just a few pounds from any DIY shop. A brush-strip letterbox cover is under £10. A chimney balloon — useful if you have an unused fireplace — costs around £25 and can be removed whenever you want to use the hearth.
Insulate Where It Counts
If your home has an uninsulated loft, adding 270mm of mineral wool insulation is one of the best investments available. According to the Energy Saving Trust, it can save a semi-detached household around £150 a year on heating. The upfront cost typically runs between £300 and £600 for a standard loft, though this can be offset significantly or eliminated entirely through the government's ECO4 scheme if you're on certain benefits or have a low income.
Cavity wall insulation, where applicable, offers similar or greater savings — often £250 to £350 a year for a semi-detached property. Check whether your walls are solid or cavity by looking at the brickwork: a standard alternating pattern usually means solid walls, while bricks all facing the same direction suggest a cavity.
Use a Smart Meter and Monitor Your Usage
Smart meters remove estimated billing and give you real-time visibility of your consumption. The in-home display that comes with them is more useful than many people realise: try running your kettle, oven, or tumble dryer and watching the live readout. The results can prompt surprisingly effective changes.
Tumble dryers are among the most expensive appliances in a UK home, costing around 35p per cycle on average. Replacing even two or three cycles per week with line or airer drying can save £50 to £80 a year. An electric shower used for eight minutes costs roughly 30p — shortening showers by two minutes across a family of four adds up to a meaningful annual saving.
Claim Any Support You're Entitled To
A surprising number of eligible households miss out on financial support that is available to them. The Warm Home Discount provides a £150 rebate off electricity bills for qualifying low-income customers each winter. Many energy suppliers also offer hardship funds and payment plans if you're struggling — Citizens Advice can help you navigate what's available.
For longer-term improvements, the Great British Insulation Scheme and ECO4 fund can cover the full cost of insulation, new boilers, and in some cases heat pumps for eligible households. These schemes are means-tested but broader in scope than many people realise — it's worth checking even if you don't consider yourself to be on a low income.
Small Changes That Add Up
No list would be complete without the basics, because they genuinely matter when multiplied across a year. Washing clothes at 30°C rather than 40°C uses roughly 40 per cent less electricity. Turning your thermostat down by just one degree can cut your heating bill by around £80 annually. Switching to LED bulbs throughout your home saves roughly £40 a year compared with halogen.
None of these actions alone will transform your finances. But three or four of them together, combined with a better tariff and some basic insulation work, could easily reduce a typical household bill by £300 to £500 a year — which is money that has better uses than keeping a draughty hallway warm.