How much does a heated throw cost to run in the UK?

Most heated throws draw between about 100 and 160 watts on their highest setting, and less on lower settings. At typical UK electricity prices that works out at a few pence per hour — far less than running central heating for the same evening, because you're heating one person rather than the whole house. Check the wattage on the product listing and multiply by your tariff's unit rate for an exact figure.

Are electric blankets safe to leave on overnight?

Only if the blanket is specifically designed and labelled for all-night use — many underblankets are meant for pre-heating the bed and should be switched off before you get in. Standard safety advice is to check the blanket for wear or scorch marks before each winter, replace it at least every ten years, never use it with a hot water bottle, and look for models with overheat protection and an auto-off timer.

How often should you replace a hot water bottle?

The general advice is every two to three years, even if it looks fine, because the rubber degrades from the inside. Many bottles, including Fashy's, have a 'daisy wheel' moulded on the neck showing the year and month of manufacture. Never fill one with boiling water — use hot tap water or let the kettle cool for a few minutes — and replace it straight away if you see cracks, perishing or a leak.

← All finds·6 Oct 2026·6 min read

Cosy Winter Kit: 5 Picks That Heat You, Not the Whole House

The clocks go back, the thermostat war begins. Five specific objects that warm the person on the sofa instead of the empty rooms around them.

Gifts Gadgets

Every October the same thread appears on r/UKPersonalFinance and r/AskUK, usually within a week of the clocks going back: how late can we leave the heating off this year, and what are the rest of you doing instead? The answers have settled into a remarkably consistent philosophy, repeated across the money-saving press and the energy-bill explainers ever since prices jumped in 2022: heat the person, not the house. Central heating spends most of its effort warming hallways, empty bedrooms and the air above your head, while the thing that actually needs warming — one person, on one sofa, for one evening — can be handled by a few objects drawing a fraction of the power. Read enough of those threads and the same short list keeps surfacing: something for the sofa, something for the bed, something old-fashioned for the cold feet, something for the gap under the door, and something you can wear at a home-office desk. The five picks below are the ones those threads converge on, one for each of those moments. All sit in the £12 to £60 range, and all have the kind of multi-winter review history that suggests they'll still be in use when the clocks go back again next year.

No. 01

Heated throw

The heated throw is the object the heat-the-person threads mention first and defend hardest, and it's easy to see why: a fleece blanket with a fine heating element woven through it, drawing around 100 to 160 watts — a few pence an hour at current UK rates, against the far bigger draw of heating a whole house for the same evening. Dreamland and Silentnight are the two names the UK reviews keep circling back to, and the recurring line in the long reviews is about the controller: several heat settings plus an auto-off timer, so it can warm up on high and settle to low without anyone falling asleep with it on full. The detail reviewers keep flagging is the feel — the good ones are soft enough to pass as an ordinary throw, with the wiring undetectable through the fleece. The honest caveats are that it only warms what it's touching, so the rest of the room stays cold, and that the cable tethers it to the sofa end nearest the socket. Most are machine-washable once the controller is unplugged.

around £50Find on Amazon

No. 02

Electric underblanket

The cold bed is the moment the threads describe with the most feeling — the slow, full-body wince of getting into icy sheets in a bedroom where the heating went off at ten. An electric underblanket fixes that with twenty minutes of pre-heating before bed and then, ideally, being switched off, and Silentnight's Comfort Control is the version the UK review press keeps recommending as the sensible-money choice. The feature the long reviews single out is dual controls on the double and king sizes, which ends the argument between the partner who runs hot and the one who doesn't. Running costs are tiny — a twenty-minute pre-heat typically uses less electricity than boiling the kettle once — which is why the energy-bill threads rate it as one of the highest-return winter buys going. The honest caveat is safety housekeeping: the official advice is to check it for wear every autumn and replace it after about ten years, and never to use one alongside a hot water bottle.

around £35Find on Amazon

No. 03

Fashy hot water bottle with knitted cover

The cheapest heat source on the list and the one with the most loyal fanbase. Fashy is the German brand the hot-water-bottle threads keep naming as the one to buy, and the reason is unglamorous: thick, seamless rubber made to the British safety standard, from a manufacturer that stamps a production-date 'daisy wheel' on the neck so you can tell when it's due for replacement. That last detail matters more than any cover, and the threads are blunt about it: hot water bottles perish from the inside, the general advice is to replace one every two to three years, and you should fill it with hot water from the tap or a kettle that has cooled for a few minutes, never straight off the boil. The knitted cover is the bit that makes it Pinterest-cosy, but it's practical too, slowing the heat loss so the bottle is still warm at 2am. Reviewers keep landing on the same use: feet first, then lower back, then hugged on the sofa.

around £15Find on Amazon

No. 04

Under-door draught excluder

The least exciting object on the list is also the one the energy-saving explainers rate most highly per pound. A surprising amount of a room's warmth leaks out under the door, and the old-fashioned answer — a long fabric sausage you nudge into place with your foot — is the one the threads keep landing on, largely because it costs about the same as a takeaway coffee and needs no tools. The version the long reviews recommend is the double-sided twin-tube design, which slides onto the bottom of the door and moves with it as it opens, rather than the single snake you have to repack every time someone walks through. The recurring line in the reviews is surprise at how much the room's 'cold spot' feeling vanishes once the floor-level draught is gone. The honest caveat is fit: measure the door's width and the gap height first, because a tube that's too thin does nothing and a too-thick one stops the door closing.

around £12Find on Amazon

No. 05

USB heated gilet

The pick that looks most like a gadget-catalogue novelty and turns out to be the working-from-home threads' quiet favourite. A heated gilet has thin carbon-fibre heating panels across the back and chest, powered from a standard USB power bank in an inside pocket, and the case for it is the home-office day: one person at one desk for eight hours, in a house that would otherwise need heating from nine to five. The recurring line in the reviews is that warming the core makes the hands and feet feel warmer too, and that three heat settings let it run on low for most of a working day. It also does the dog walk, the football touchline and the bonfire, which is why reviewers keep calling it the most versatile winter buy they've made. The honest caveats: the power bank is usually sold separately — a 10,000mAh one covers a working day on the lower settings — and the heating pads have to come out before it goes in the wash.

around £40Find on Amazon

A final note

The pattern across every heat-the-person thread we read is the same one the heatwave threads land on in July: comfort comes from matching a small, specific object to the exact moment you're cold, not from one big expensive fix. The heated throw handles the sofa, the underblanket handles the bed, the hot water bottle handles the feet, the draught excluder stops the room leaking, and the gilet handles the desk. None of it replaces heating a house when it genuinely needs it, especially for anyone vulnerable to the cold — but sort those five moments, and the heating can stay off for a lot more of the evening than you'd think.

Frequently asked questions

How much does a heated throw cost to run in the UK?: Most heated throws draw between about 100 and 160 watts on their highest setting, and less on lower settings. At typical UK electricity prices that works out at a few pence per hour — far less than running central heating for the same evening, because you're heating one person rather than the whole house. Check the wattage on the product listing and multiply by your tariff's unit rate for an exact figure.
Are electric blankets safe to leave on overnight?: Only if the blanket is specifically designed and labelled for all-night use — many underblankets are meant for pre-heating the bed and should be switched off before you get in. Standard safety advice is to check the blanket for wear or scorch marks before each winter, replace it at least every ten years, never use it with a hot water bottle, and look for models with overheat protection and an auto-off timer.
How often should you replace a hot water bottle?: The general advice is every two to three years, even if it looks fine, because the rubber degrades from the inside. Many bottles, including Fashy's, have a 'daisy wheel' moulded on the neck showing the year and month of manufacture. Never fill one with boiling water — use hot tap water or let the kettle cool for a few minutes — and replace it straight away if you see cracks, perishing or a leak.