Electric blanket: the trick to pay less for heating

Electric blankets in winter: real savings or a household risk?

Is it worth buying an electric blanket to get through winter without turning on the heating? The doubt is reasonable when your home thermometer sits between 11 and 13 degrees in the middle of January. That's the temperature described in an old, poorly insulated top-floor flat, a common scenario across much of Spain's housing stock. The recurring conclusion: an electric blanket's power consumption is low compared to a radiator, but it isn't a system for heating a room — it's for heating a person.

What an electric blanket really costs to run

The savings are real, though it helps to understand where they come from. An electric blanket uses a fraction of what an electric radiator consumes, because its goal is not to raise the air temperature of the room but to transfer heat directly to the body. That makes it an efficient tool for anyone spending hours sitting at a laptop or on the sofa. The trade-off is the focus: if you move, the heat goes with you. As a home heating system, it doesn't compete; as a patch for localized cold, it does.

There's one figure worth remembering: at Maxi Dia stores, electric mattress covers of 50 W have been spotted for just over 20 euros. It's the cheapest entry point to contact heat. From there, the market offers blankets, mattress covers and bed warmers with heating elements and batteries.

The antiestéticar of magnetic fields and burns

Safety is the other side of the story. Antiestéticar of the magnetic field comes up, a recurring concern with this type of device, though there is no data to back it up. What does appear as a risk documented by firsthand experience is excessive heat: a blanket used for months left a brown mark on a sheet. It's not a fire, but it's a sign that contact temperature matters.

The advice repeated among daily users is to switch it on 15 minutes before going to bed, turn it off, and sleep with the stored heat. For beds, the companion considered almost essential is a antiestéticather duvet: one heats, the other retains. The combination is described as a sauna.

Mattress covers, sleeping bags or rice in the microwave

The range of alternatives is wide. There's the electric mattress cover, placed under the fitted sheet, which some consider the best possible buy. There's the sleeping bag, a budget option that works well for those who don't want to invest in gadgets. And there are home remedies: a small bag of rice or lentils heated for two minutes in the microwave, or an old T-shirt turned into a heat pack.

Traditional bed warmers also come up — those blocks with a heating element you plug in until the light goes off, then release heat slowly. The modern lithium-battery version lets you cut off the heat release, though it's unclear whether it's worth it.

What to check before buying

The list of criteria is short and sensible. Automatic shut-off, which is required by EU rules and whose absence should raise suspicions about quality. That it's washable. And to be wary of 10-euro models: cheap ends up expensive, and they break with little use. German brands come up as a byword for reliability, with prices that can be double those of Lidl or Dia.

Cold feet are the problem no blanket fully solves. That's where wool socks, ski trousers or small under-desk radiators come in. The electric blanket helps, but it doesn't work miracles. And if anyone expects to heat the whole living room with it, they'd better switch on the radiator.