A warning has been issued to anyone using an electric blanket this winter.

The electric bedsheets are a really popular choice for keeping warm on the cheap during the colder months, with some models costing just 2p an hour to run, an affordable alternative to running the full house’s heating for even the most cash strapped families.

But like most things electrical, there are still rules about how to use them safely – and warnings from fire chiefs and manufacturers about what you must not do if you have one.

London Fire Brigade has set out that there are many rules about using an electric blanket, many of which are not obvious if you didn’t know.

For example, you should never use an electric blanket if you have an air flow pressure relief mattress, or use emollient creams on your skin.

You should also never use an electric blanket at the same time as a hot water bottle.

The fire service explains: “Though electric blankets can be a great, cost-effective way to keep warm and cosy, it’s important to use them with care. Before putting your electric blanket on the bed to use over the winter months, take a few minutes to check that the blanket is safe for continued use.

Your blanket should be replaced with a new one if:

• Fabric is worn or frayed.

• Scorch marks are visible on the fabric

• Wires are poking through the fabric.

• There is damage to any part of the electrical cord.

• The control buttons are making a buzzing sound when switched on and/or is giving off a smell.

• The connector fitted to the blanket is damaged or over-heating

  It also warned of 6 rules you must follow:

• Unplug blankets before you get into bed, unless it has a thermostat control for safe all-night use.
• Never use an electric blanket if you have an air flow pressure relief mattress, or use emollient creams. 
• Never use a hot water bottle at the same time as using your electric blanket.
• Do not buy second-hand electric blankets.
• Remember to check regularly for wear and tear and replace at least every 10 years.
• Store electric blankets flat, rolled up or loosely folded to prevent damaging the internal wiring. 

Leading bed and mattress maker Silentnight backs up that electric blankets should not be left unattended, or slept under.

It warned: “Electric blankets are very safe to use with the correct care and guidance. When purchasing an electric blanket, buying one that is brand new, rather than second-hand, is always advisable. It’s also important to check that the blanket you choose includes overheating protection.  

“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.”