electric blanket guide
the sleep summary:
An electric blanket is a type of blanket which is placed on top of the mattress but under the sheet to heat a bed. They're plugged directly into the mains and work by driving electric through insulated wires, creating and distributing heat throughout the fabric which can be controlled using a remote.
To wash an electric blanket, first remove the power cord and controller from the blanket. You can remove any dirt or stains by spot cleaning with a wet cloth and a mild detergent. Most electric blankets are suitable for washing machines; however, you should wash the blanket on a delicate or gentle wash at a low temperature. You should air dry electric blankets rather than using a tumble dryer. The blanket must be completely dry before you plug it back in or put it on the bed.
For safety reasons, you should replace your electric blanket every 10 years. Age is the single biggest cause of failure.
The safest way to use an electric blanket is to pre-warm the bed for 20-30 minutes, then switch it off before you get in unless your model is specifically rated for all-night use. Always check the label before sleeping with your electric blanket on. Only use a blanket overnight if the manufacturer states it's designed for it; many electric blankets are pre-warm only.
Running costs of an electric blanket are relatively low, with most electric blankets using 40-100 watts, which works out at roughly 1-3p per hour, or around 13p for a full night on a 60W model.
Never fold or bunch an electric blanket while it's switched on as this can cause overheating.
Electric blankets are not suitable for everyone. People with diabetes, reduced sensation within the skin, and anyone unable to operate the controls, should pre-warm their bed and switch off the blanket rather than sleep with one on.
There are few things in life as lovely as getting into a warm, cosy bed at night. And on a cold night, an electric blanket turns the worst bit of going to bed - those first few minutes shivering under cold covers - into a dreamy end of day experience. So many people choose to use a heated blanket, and we understand why. They’re practical, cost very little to run and help you get a good night’s sleep. Like anything electrical that lives in your bed, there's a right way to use one. Nothing complicated: just a handful of habits that keep yours safe, working well, and long-lasting. Here's everything worth knowing:
what is an electric blanket?
An electric blanket, also known as a heated blanket, is a bedding accessory that contains built-in electrical heating elements. Generally placed under a bed sheet but on top of a mattress protector, an electric blanket is designed to generate warmth by delivering controlled heat. They typically have adjustable temperature settings, allowing you to select your preferred level of warmth before hitting the hay. Our heated throws and electric blankets are controlled by an adjustable handset with three warmth settings, letting you choose the temperature rather than simply turning on or off.
how do electric blankets work?
An electric blanket works by running thin, insulated heating elements through a soft fabric blanket. When you switch it on, those elements warm up gently and spread heat evenly across the surface, warming either the bed beneath you or the layer over you - depending on which type you have.
how to use an electric blanket
To use your electric blanket:
Spread it over the bed and make sure any wires or controls are clear of your neck area. Our Silentnight electric blankets are designed with the controls at the head of the bed safely out of the way (other manufacturers may vary).
Next, plug the cord into your blanket, and then into the wall.
Then, switch the controller to your preferred settings, depending on how chilly you are, and you’ll soon feel the calming and snug warmth.
Please note: You should always read the instructions before using your electric blanket – this has all the information you need to prevent any hazards, such as how to use and care for your blanket.
are electric blankets safe?
Used properly, and when they're in good condition, yes. Electric blankets are very safe to use with the correct care and guidance. Modern electric blankets are made to strict safety standards and include features like overheat protection. We’d always recommend purchasing an electric blanket brand new, rather than second-hand, as they should be replaced ever 10 years, and buying new ensures you know the age of the blanket. It’s also important to check that the blanket you choose includes overheating protection. Top tip: A quick way to date your electric blanket: if it carries an old, round BEAB safety mark, it's more than ten years old and should be replaced.
what to check every year before use
Every year, make this your first port of call once you’ve brought your electric back out. Lay it out flat in good light and look for:
Scorch marks or discolouration anywhere on the fabric
Fraying fabric or any exposed heating element
Hard creases or permanent folds in the blanket
Stains or damp patches
Damaged or missing tie tapes (the ties that hold it to the mattress)
Worn, cracked or frayed cords, especially near the plug and controller
Loose or wobbly connections where the cable meets the blanket
A controller that feels hot, smells of burning, or makes a buzzing noise
If you find even one of these, you should stop using it and replace it.
when to take extra care using an electric blanket or heated throw
If you have diabetes, or any condition causing reduced sensation in your skin, take particular care when using a heated blanket. Nerve damage - including diabetic neuropathy - can mean you don't feel when something is becoming too hot, which creates a risk of burns without you noticing. The standard advice is to pre-warm the bed and switch the blanket off before getting in, rather than sleeping with it on (which we don’t recommend).
The same applies to:
Anyone who can't easily operate the controls or move away from the heat
Babies and young children - never use an adult electric blanket in a child's bed
Anyone with limited mobility who couldn't reposition themselves if it became too warm
If you're unsure whether an electric blanket is suitable for you or someone you care for, speak to a GP for guidance. For a warm bed without any of these considerations, a higher tog duvet and a winter blanket will get you most of the way there with nothing to plug in.
can you sleep with an electric blanket on?
Electric blankets should never be left unattended when turned on but we know it’s easy to doze off when snuggled under one. We don't recommend sleeping with an electric blanket on or leaving it heated up all night unless you have a thermostatic control or timer which will automatically turn it off. You should make sure to read the instructions before using your electric blanket as this has all the information you need to prevent any hazards, including safety advice. Even with a blanket rated for overnight use, pre-warming your bed and then switching the blanket off is worth considering, and not only for safety reasons. Your body needs to cool down to sleep well. Core body temperature naturally drops in the evening, and that drop is part of what triggers melatonin production and makes you sleepy. A bed that stays actively heated all night can work against that process, leaving you too warm in the small hours and more likely to wake. For more on the ideal temperature for sleep, check out our guide.
electric blanket buying guide
For a warm bed to get into: an electric underblanket is the most efficient choice. It warms the bed from below and disappears under your fitted sheet. For warmth while you're awake: a heated throw is far more practical. Use it on the sofa in the evening and move it to the bed later. Our Silentnight luxury fleece heated throws and faux fur heated throws are made for exactly this, and look good enough to leave out year-round.
For a bigger, shareable option: a giant heated blanket gives you enough coverage for two people without either person tugging for more blanket.
For no electricity at all: our self-heating mattress topper uses reflective technology to send your own body heat back to you.
Here’s some key features to look out for when buying the best electric blanket for you:
Heat settings - This lets you switch between different temperatures, so you can reach an optimum level of warmth.
Over-heating protection - This is a must on any electric blanket and makes sure the blanket automatically turns off if a certain temperature is met.
Dual control - Perfect for couples, dual controls let you set a different temperature for each side of the bed.
Ultra-fast heat up - Getting warm under the duvet can feel like it takes a lifetime on these chilly nights. The ultra-fast heat up feature will get you from freezing to cosy in no time.
Cord length - Check the cord length of your blanket, it would be very frustrating to find the blanket won’t reach the bed.
Size - You want to make sure you select a blanket which is the right size for your bed. Silentnight's collection of electric blankets is available in a range of sizes, from snug fits to cover single beds, to super king-sized options.
Maintenance - You’ll want to consider the maintenance of your electric blanket. There’s a chance you may spill or stain your blanket, especially as it’s designed to sit under a thin bed sheet. Before cleaning your electric blanket, you should always check the manufacturer's instructions.
electric blanket faqs
how long do electric blankets last?
An electric blanket should be replaced roughly every 10 years. It’s essential to replace your blanket if it begins to show signs of wear and tear. If you notice any of the damages below, you should consider replacing your blanket for safety reasons:
Creasing or folding
Loose connections
Scorch marks
Fraying fabric
Exposed parts of the blanket
Damp patches
Worn flex
Missing or damaged tie tapes
are electric blankets expensive to run?
The cost to run an electric blanket will vary depending on the size and model of your product, as well as the duration of usage. However, electric blankets are typically a more cost-effective way of staying warm while you sleep, generally costing only a few pence per hour. The exact cost per hour does depend on the power rating, its quality, how long it’s on for and the energy prices at the time of use.
how much does an electric blanket cost to run?
Running an electric blanket costs a few pence an hour (around 3p for one hour). Heating the room it's in costs considerably more - a fan heater will typically run into the tens of pence per hour, and central heating will cost significantly more.
do electric blankets use a lot of electricity?
No, they use very little. At 40-100 watts, an electric blanket draws less power than a traditional light bulb and a small fraction of what a fan heater or radiator uses.
how to store an electric blanket?
If you want to store away your heated blanket, it’s best to carefully roll it beforehand, instead of folding it. This avoids causing any damage to the wires and helps your electric blanket last longer. Then place it in a clean, dry place so that it’s ready to be used next time.
how to wash a Silentnight electric blanket?
First, disconnect the power lead from the blanket by lifting the flap so the small round button is released. Then, pull to release the cord. The blanket section is then suitable to be machine washed the same way as wool at 40°C and either air dried or low heat tumble dried. All Silentnight blankets are machine washable but not suitable to be dry cleaned. Please follow the manufacturer’s instructions if you’re unsure.
how hot do electric blankets get?
Electric blankets can be set to a variety of temperatures, depending on your preference. The lower temperatures tend to be around 18 -25°C, but they can go as hot as 56°C.
should electric blankets go above or below mattress protectors?
The electric blanket should be "sandwiched" between the mattress protector and the bottom sheet that you sleep on. Your electric blanket should also be placed above your mattress topper, but if you’ve selected your topper for its body moulding properties, you’ll notice a difference in the feel when you put an electric blanket on top of it.
can you use an electric blanket with a memory foam mattress?
Yes, you can use an electric blanket with a memory foam mattress, but you should make sure you also use a mattress topper as there is a chance the heat will warp the foam, meaning the mattress won't mould to your body’s shape as well. You should also try and avoid using an electric blanket at a high heat on memory foam as you risk damaging the mattress.
do you sleep over or under an electric blanket?
An electric blanket should be positioned on top of your mattress and under your sheet and secured at the corners when fastening straps are provided. A heated throw can be draped over you.
shop the best electric blankets here
At Silentnight, we have a range of electric blankets to suit your sleep preferences, available in fleece and luxury options designed for couples or solo sleep. With a variety of control options to suit your desired temperature range, you can explore our full range of electric blankets today. And discover even more ways to stay warmer this winter with our range of foot warmers and weighted blankets.
