The Best Electric Blanket (UK, 2026)

Here is the logic the energy industry quietly agrees with: it is far cheaper to heat a person than a room. A heated throw or underblanket draws around 100W, which is roughly 2 to 3p an hour at the current Ofgem rate. A 2kW plug-in radiator costs about 53p an hour, and central heating warms the whole house to warm one body. If you turn the heating down a degree or two and put the warmth where you actually are, the saving over a winter is real money.

• Cold on the sofa in the evening? A heated throw with the thermostat turned down is the cheapest comfort there is. This is the main event.
• Cold bed, warm living room? An underblanket pre-warms the mattress so you climb into a toasty bed. Different job, same tiny running cost.
• Trying to heat a whole cold room? A blanket warms you, not the space. If you need the room itself warm, see our oil-filled radiator guide and use the blanket alongside it to run the heater lower.

One important caveat before you buy: electric blankets are not for everyone. People with diabetes or reduced sensation to temperature, young children, anyone who cannot operate the controls, and people with urinary incontinence should avoid them or seek medical advice first, because the common thread is not feeling or not safely managing the heat. More on safe use below.

Three formats, and the right one depends on where you feel the cold.

• Underblanket (our Homefront and Dreamcatcher picks): fitted, sits under your bottom sheet, warms the mattress. The classic "get into an already-warm bed" choice. Many are preheat-only, meaning you switch them off before you get in; some are rated for all-night use. Check the label.
• Overblanket (the Beurer): lies on top, over you or over the duvet. Generally designed to stay on while you are in bed, with an auto-off backstop.
• Heated throw (our Silentnight winner): a portable blanket you use anywhere, sofa or bed. The most versatile format and the one most people should buy first.

If you only buy one, buy a heated throw: it covers the sofa, the main use case, and doubles as an over-blanket. Add a fitted underblanket only if a cold bed is a specific, nightly problem. For couples, an underblanket with dual controls is worth the small premium so each side sets its own heat.

For underblankets, match the bed: single, double, king or super king, so the heated area covers where you lie. For throws, one size suits most people; sizes around 120 by 160cm cover an adult on a sofa comfortably.

• Dual control on a double or larger: two handsets, one per side, so a hot sleeper and a cold one can co-exist. On any shared bed, this is the feature to prioritise.
• Timer and auto-off: a timer pre-warms the bed and shuts off automatically, and an auto-off backstop is a safety feature worth having on anything you might doze under.
• Heat levels: cheaper blankets often have three; the Beurer has six. More levels help if budget blankets tend to feel either not-quite-warm or too hot for you.
• Washability: most modern blankets are machine washable once the controller unplugs. Confirm it before buying, because you will want to.

This is the happiest running-cost table in any of our guides. At the current Ofgem price-cap rate of 26.32p per kWh (Direct Debit, October to December 2026), an electric blanket costs pennies:

*At the Ofgem cap rate of 26.32p/kWh (Oct to Dec 2026). Blankets also spend much of their time on a low holding setting or cycling off, so real costs trend toward the bottom of the range.

That last row is the whole argument. A heated throw costs roughly a twentieth of what a radiator costs to run, because it warms the one body that needs warming instead of the air in the whole room. Use the blanket as your default winter warmth and the room heater only when you genuinely need the whole space warm.

Electric blankets are safe when they are modern, undamaged and used correctly, and a fire risk when they are old, cheap-and-uncertified or misused. Electrical Safety First and UK fire services are consistent on the essentials:

• Buy certified. Look for a recognised safety mark (BEAB Approved) plus UKCA or CE marking, which means it has been independently tested to the UK and European standard. Avoid any no-name blanket that does not clearly show one.
• Replace roughly every 10 years, and immediately if you see scorch or burn marks, frayed or worn fabric, exposed or poking wires, or a damaged cord or controller. When in doubt, bin it; some fire services will test an older blanket for you.
• Follow the preheat-only vs all-night rating. Many underblankets are designed to warm the bed then be switched off before you get in. Only leave a blanket on overnight if its label says it is rated for all-night use.
• Never use it with a hot water bottle, and never with wet bedding. Water and mains electricity do not mix.
• Do not fold it, in use or in storage: folding kinks and breaks the internal wiring. Store it flat or loosely rolled.
• Keep the controller on top of the bed, not trapped under a mattress or pillow where it can overheat.

And the people who should not use one without medical advice, because the risk is not feeling or not managing the heat: those with diabetes or reduced temperature sensation, young children, anyone unable to operate the controls, and people with incontinence.

The blanket is only half the saving. The other half is what you do with the thermostat once you have it:

• Turn the heating down a degree or two and let the blanket cover the gap. You feel warm where it counts while the boiler works less, which is where the real money is saved.
• Pre-warm, do not run flat out. Use the timer to warm the bed before you get in, then drop to low or off. The blanket does not need to be on maximum to keep you cosy.
• Combine with the basics: a draught excluder, closed curtains at dusk and a jumper do more together than any single gadget.
• Zone your evening. Throw on the sofa, heating low, door closed. Warm the room you are in, not the empty ones.

Used this way, an electric blanket is not a gadget, it is one of the highest-return things you can buy for a cold UK home this winter.

• "Electric blankets are dangerous." Old or uncertified ones can be. A modern blanket with a proper safety mark, used to its label and replaced when worn, is safe. The danger is the decade-old hand-me-down, not the technology.
• "They are expensive to run." The opposite. At 2 to 3p an hour they are the cheapest form of warmth in the house by a wide margin.
• "You can leave any electric blanket on all night." No. Many underblankets are preheat-only and must be switched off before you sleep. Only ones labelled for all-night use should stay on.
• "A throw and an underblanket are the same thing." A throw warms you on top and goes anywhere; an underblanket warms the mattress from below. Buy for where you feel the cold.
• "A pricier blanket costs less to run." It does not. Running cost is just wattage times the rate, so a £90 blanket and a £30 one of the same draw cost the same per hour. You pay more for comfort and build, not cheaper electricity.