By Kirsty Hudson | Last edited: August 2026
How do electric blankets work?
Want to be toasty warm without a heater? An electric blanket does just that – heat the person, not the room. Electric blankets contain a series of thin electrical wires embedded inside the fabric. When the blanket is plugged in and switched on, these wires activate and heat the surrounding fabric and bed. Perfect for cosy nights, heated blankets provide targeted warmth and comfort, helping you create a snug sleep environment. Whether you're warming up before bed or staying comfortable through colder nights, an electric blanket offers generous coverage for all-over warmth.
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Which type of electric blanket is best for you?
There are several types of electric blankets available, each designed to keep you warm and cosy, without having to heat the room. Explore and pick the best blanket for you to hunker down with.
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Not sure what’s the best heating blanket for you? Here's a quick chart that breaks down underblankets, overblankets, mattress covers, and heated throws, so you can pick what fits best for your needs.
| Types of electric blanket | Usage | Key feature | Ideal for |
|---|---|---|---|
Electric underblankets | Goes on top of the mattress and under the fitted sheet. | Fast and consistent heating. Some products may have dual controls for each side of the bed. | For cold sleepers and couples. |
Electric overblankets | Drapes like a regular blanket over you. | Easy and efficient heating. Often features a plush fabric. | For lounging on a sofa or bed. |
Heated mattress covers and protectors | Fits over the mattress and under the fitted sheet. | Snug fit and doubles as a mattress protector | A tidier fit, ideal for homes with children and pets. |
Heated throws | Drapes like a regular throw for targeted warmth. | Portable and handy for spot heating. | Quick warmth at your desk, reading chair, or sofa. |
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Electric blanket features
Each type of electric blanket has some unique features to offer. Make sure you check the product details to find what suits you best. Here are some features to look out for:

Timer programmes
You choose when your blanket turns on and off without having to be there, or be awake to do it.

Heat settings
Most blankets will have variable heat settings that will generally range from 18°C to 56°C.

Dual controls
Each side of a double blanket can be heated separately so couples can choose their own preferences.

Overheat protection
All blankets in the UK will have this. The blanket automatically shuts off when it senses any overheating to keep you safe.

Temperature sensors
The sensors detect your body and room temperatures to adjust the heat of the blanket accordingly.

Extra foot warmth
Some blankets have slightly higher temperature at the bottom to keep your toes toasty warm.
How to wash an electric blanket
Keep your electric blanket fresh, clean and cosy by washing it carefully. To help protect its fabric and internal wiring, always check the care label first, as cleaning instructions can vary between models and types of electric blankets.
- Remove the blanket from the power source, disconnect removable controls and let it cool completely before washing.
- Use a gentle, cold cycle only when the care label permits machine washing.
- If hand washing is permitted, gently soak and swish the blanket in cool water without wringing, twisting or scrubbing.
- Use a mild laundry detergent for cleaning, and steer clear of bleach, abrasive cleaners, and fabric conditioners unless recommended by the product manufacturer.
- Air dry flat, avoiding direct heat and clothes pegs on wired areas.
- Reconnect controls only when completely dry, and never switch the blanket on to dry it.
Frequently asked questions about electric blankets
How much does an electric blanket cost to run?
Many electric blankets use relatively low amounts of electricity compared with some room-heating methods. Simply prep your bed for a few minutes before you call it a day and you'll be set for the night. Using an electric blanket may help reduce the need for whole-room heating in some situations, but any savings will depend on usage patterns and household heating needs. Please note that running costs vary by model, usage and electricity tariff.
What are the health benefits of electric blankets?
Some people find warmth soothing for aches and pains, while others believe that a warmer, drier sleeping environment may help reduce the conditions favoured by dust mites. However, results may vary. Please note that electric blankets are not a medical treatment. Anyone with health concerns should seek advice from a healthcare professional.
Should an electric blanket go over or under a mattress protector?
An electric blanket or underblanket would go over your mattress protector and under the fitted sheet. This ensures that the mattress is always protected and there is enough layering for heat protection between you and the electric blanket.
What is the difference between an electric blanket and an underblanket?
While electric blankets is a general term for heated blankets, an underblanket is a specific type of electric blanket used on top of a bed for consistent warmth as opposed to an overblanket which you can drape over yourself.
Are electric blankets safe?
Electric blankets are generally considered safe when used in accordance with the manufacturer's instructions.
- Carefully roll blankets up for storage to avoid damaging wiring.
- Check your blanket regularly for wear and tear, such as fraying fabric, damp patches or loose connections.
- Don't use while wet or damp and don't turn on your blanket to dry it.
- Don't use an electric blanket and hot water bottle together.
Read more on electric blanket safety here.
Can you wash an electric blanket? If yes, how?
Generally you can wash and dry an electric blanket on gentle cold settings but always follow the manufacturer's washing and drying instructions, as care requirements vary by model. If you don't have a dryer, you can air dry your blanket but make sure not to place clothes pegs on wired sections.
Is it OK to sleep with an electric blanket on?
As a rule of thumb, electric blankets should not be left unattended when they are on. Most of the electric blanket brands do not recommend sleeping with an electric blanket or a heated throw all night or for a longer duration. You should use a thermostatic control or timer if you want to keep the blanket on all night. Make sure to read all the instructions thoroughly before you use your electric blanket, to prevent any hazards.
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