The Most Expensive Appliances to Run in the UK: 2026 Cost Rankings

Published 10th February 2026

Most electricity bills give you one number and no idea which appliances produced it. Some devices quietly burn through money at a startling rate while others barely register, and the gap between the two ends of the list is far wider than most people expect.

The figures below rank the worst offenders in a typical UK home at 26.11p per kWh, the electricity rate under the Ofgem price cap for 1 July to 30 September 2026. They assume normal usage, not leaving everything on 24/7, just real-life patterns. The cap is reset every three months, so check Ofgem's unit rate page and rerun the numbers if you are reading this in a later period.

1. Tumble Dryer: Around £215 to £270 Per Year

The tumble dryer. Of course it is. A condenser model chews through 4 to 5 kWh every single cycle. Run it four times a week (pretty standard for a family) and you're looking at 832 to 1,040 kWh a year.

Typical annual cost: A condenser dryer used 4 times per week costs roughly £215 to £270 per year. A heat pump dryer uses about half the energy, costing around £110 to £135 annually.

Heat pump dryers use roughly half the energy, about 2 kWh per cycle. They cost more to buy, but the savings pay for themselves in two to three years. If your current dryer is on its last legs, a heat pump model is a no-brainer.

Or just use a washing line. Revolutionary concept, I know. A heated airer uses about 0.3 kWh per hour and dries a full load overnight for pennies. The British weather doesn't always cooperate, but when it does, free drying is hard to beat.

2. Electric Heater: £190 to £375+ Per Year

Portable electric heaters are absolute electricity vampires. A standard 2kW fan heater running four hours a day through the cold months (October to March, roughly 180 days) will gobble up about 1,440 kWh over winter.

Typical annual cost: A 2kW electric heater used for 4 hours daily over winter costs approximately £376. Even running it for 2 hours a day adds up to around £188 per year.

Oil-filled radiators are slightly better because they hold heat after you switch them off, but they still use a lot. If you're relying on portable heaters, honestly, sort your insulation and draught-proofing first. That's the fix. A heated blanket uses about 100W and keeps you toasty for a fraction of the cost of heating an entire room.

3. Electric Oven: Around £135 to £170 Per Year

A standard electric oven pulls 2 to 2.5 kWh every time you use it. Cook five times a week and that's 520 to 650 kWh a year, just on the oven alone.

Typical annual cost: An electric oven used 5 times per week costs roughly £136 to £170 per year. Using it 3 times per week brings this down to around £81 to £102.

Air fryers aren't just a fad. They use about 1.5 kWh per cook and they're faster, which means roughly 50% less energy than firing up the full oven for a meal. Slow cookers are even better: 0.7 kWh for eight hours of cooking. That's almost nothing.

4. Kettle: Around £38 to £76 Per Year

The kettle. Britain's favourite appliance and a sneaky energy drain. We boil the thing four to five times a day on average. Each boil uses about 0.1 kWh if you're only heating the water you actually need. If you fill it to the brim every time, it is more.

Typical annual cost: Boiling a kettle 4 times daily costs around £38 per year. Heavy tea drinkers boiling 6 to 8 times per day could spend £57 to £76 annually.

Here's the annoying thing: 40% of people regularly overfill their kettle. That's energy literally going down the drain. Boil only what you need and you'll cut your kettle costs by a third. Some newer kettles have variable temperature settings too, so you don't always need a full rolling boil for every cup.

5. Gaming PC: Around £40 to £190 Per Year

Gaming PCs are the surprise entry on most lists. A high-end rig draws 300W to 600W under load, plus another 30 to 80W for the monitor. Game for four hours a day on a 500W system and you're using about 730 kWh a year.

Typical annual cost: A gaming PC used for 4 hours daily at 500W costs around £191 per year. Casual gamers using a 200W to 300W system for 2 hours daily might spend £38 to £57.

Modern GPUs and CPUs are getting more efficient, so upgrading old components can actually cut your electricity bill while improving performance. Win-win. And for the love of your wallet, switch the thing off properly when you're done. Standby mode still draws power, and over a year it adds up.

Other Notable Energy Consumers

The top five get the headlines, but these appliances are quietly adding up too:

Fridge-freezer: Running 24/7, a typical model uses 200 to 400 kWh per year, costing £52 to £104. An A-rated model will be at the lower end.
Washing machine: Around 130 to 200 kWh per year for a household doing five loads a week, costing £34 to £52. Washing at 30 degrees instead of 40 degrees saves about 40% of the energy per wash.
Dishwasher: Roughly 180 to 250 kWh per year if used daily, costing £47 to £65. Using the eco cycle reduces both water and energy consumption significantly.
Television: A large modern TV uses about 80 to 150 kWh per year, costing £21 to £39, though older plasma screens could be double that.
Immersion heater: If you rely on an electric immersion heater for hot water, this can cost £320 to £530 per year depending on usage. A timer is essential to avoid unnecessary heating.

How to Reduce Your Appliance Running Costs

Once you know where the money is going, these are the changes that move the number:

Check energy ratings: When replacing appliances, always choose the highest energy rating you can afford. The difference between a D-rated and A-rated appliance can save you £30 to £100 per year per appliance.
Use a smart plug with energy monitoring: Devices like the TP-Link Tapo P110 or Shelly Plug S let you see exactly how much each appliance is costing you in real time.
Switch to off-peak tariffs: If you have a smart meter, consider a time-of-use tariff where electricity is cheaper at night. Running your dishwasher, washing machine, or tumble dryer during off-peak hours can save 30% to 50% on those cycles.
Eliminate standby waste: UK households waste an estimated £60 to £80 per year on standby power. Switch devices off at the wall when not in use.
Use our calculator: Our free energy cost calculator lets you enter your specific appliances, wattages, and usage patterns to get a personalised cost breakdown.

Where Does That Leave You?

Heating and drying appliances dominate this list for one simple reason: converting electricity into heat takes a staggering amount of energy. Once you know where your money's actually going, you can make targeted changes (upgrade the worst offenders, adjust your habits) and realistically save £200 to £400 a year. No gimmicks, no sacrifice.

Plug your actual appliances and usage patterns into our energy cost calculator and see exactly what's costing you the most. You might be surprised.