Is it bad to use a heated blanket every night?

Author: Dr. Cesar Parker  |  Last update: Wednesday, August 13, 2025

Using your electric blanket all night long may also make it harder to stay asleep, given that excess heat reduces both Stage 3 (slow-wave) and REM (rapid eye movement) sleep. Additionally, if you find you're restless because you're feeling too hot, your sleep quality may be affected.

What happens if you use a heated blanket too much?

One of the potential risks of using electric blankets is inadvertently overheating the body. Electric bedding should never be used for an infant or someone who is immobile. Certain medical conditions, including diabetes, can result in neuropathy, which arises from damage to the peripheral nerves.

Is it bad to sleep with a heated blanket all night?

If your blanket doesn't have a timer, turn it off before going to sleep. Electric blanks are not safe to leave on all night while sleeping.

Is it bad to sleep in a heated bed?

Sleeping with the heater on is very dangerous for your life as the heating increases the level of carbon monoxide in the room. This increases the risk of asphyxia (sleep death).

How long is it safe to use a heated blanket?

Factors Influencing Usage Duration

Automatic Shut-off: Many electric blankets come with an automatic shut-off feature that turns the blanket off after a set period, usually 10 to 12 hours. This feature is designed to prevent overheating and allows for safe overnight use.

Is it safe to leave an electric blanket on all night?

Do heated blankets increase electric bill?

The consumption of energy depends on its wattage, typically between 15 to 115 watts. If you're based in the U.S., you might be charged around 13 cents per kWh. So, if your electric blanket consumes 100 watts and you use it for 10 hours a day, that will cost about 13 cents.

When should you throw out an electric blanket?

Your blanket should be replaced with a new one if:
  1. Fabric is worn or frayed.
  2. Scorch marks or discoloration areas are visible on the fabric.
  3. Wires are visible or poking through the fabric.
  4. There is damage to the flexible cord between the supply plug and the control and/or the control to the blanket.

Can an electric blanket raise body temperature?

Electric blankets have adjustable heat settings, allowing users to control the level of warmth. Depending on the setting, they can raise body temperature by 2-5 degrees Celsius. They are instrumental in cold weather but require careful use to avoid overheating.

What does sleeping in heat do to your body?

When the room is too warm, it becomes difficult for the body to lower its temperature. This can lead to tossing and turning, frequent awakenings, and a feeling of restlessness. Sleep disorders like sleep apnea become more severe in hot weather because the body struggles to breathe properly when it's overheated.

Can I put a comforter on top of an electric blanket?

Layer Strategically: Place the heated blanket as the top layer directly under a lightweight, breathable duvet or comforter. This configuration allows for better heat control while still providing extra warmth. Heated Mattress Pads: As an alternative, consider using a heated mattress pad under your bedsheet.

Can you overheat your body with blankets?

Yes, being under a blanket significantly affects your body temperature. When you cover yourself with a blanket, it effectively traps your body heat. This creates a warm insulating layer between the fabric and your skin, which acts as a barrier that prevents cooler ambient air from drawing heat away from your body.

Can I leave my heated blanket on all night?

Electric blankets should never be left unattended when turned on. But, can you leave an electric blanket on all night? We don't recommend sleeping with an electric blanket on all night and a thermostatic control or timer should be used if you choose to leave your electric blanket on.

What not to do with a heated blanket?

✓ Don't fold an electric blanket when storing or using it: the wires inside the blanket can become damaged and cause it to overheat and cause a fire. ✓ Check blankets for worn areas, loose plugs or other damage. If your blanket is very old or damaged, get a new electric blanket.

What are the side effects of heated blankets?

However, heated blankets pose a high risk of burn injuries and fires when the recommended precautions are not followed. Electric blankets pose a risk of miscarriage in pregnant women. A small study in 2007 also linked heated blankets to an increased risk of heatstroke.

Can an electric blanket affect your heart?

The short answer is no, there is no scientific evidence that using an electric blanket will have an effect on atrial fibrillation. However, becoming overheated can stress the heart, which might conceivably trigger an episode. If you do use an electric blanket, be sure to use it on a safe and appropriate setting.

Can wearing too many clothes raise your temperature?

Body temperature changes throughout the day. It is usually lowest in the morning and highest in the late afternoon and evening. Other factors that can temporarily affect your temperature reading include: Wearing too much clothing (if you're overdressed enough to raise your body temperature).

Is it OK to leave heating on all night?

Maintained Comfortable Room Temperature:

By leaving your heating on overnight, you can maintain a consistent and comfortable room temperature, keeping you and your family warm all night. This can result in better sleep, better health, and a more pleasant living environment.

Is an electric heater bad for health?

Long-term exposure to dry, warm air produced by room heaters can cause irritation to the eyes and skin. This can lead to redness, itching, and discomfort.

Can I use a heating pad every night?

Poston advises, “Don't use a heating pad while sleeping. Do not use it on damaged skin or in areas where you have nerve damage and may be unable to tell if skin becomes damaged.” Heating pads provide comfort, but they are not safe for everyone.

Why can't you sleep with an electric blanket on?

Using your electric blanket all night long may also make it harder to stay asleep, given that excess heat reduces both Stage 3 (slow-wave) and REM (rapid eye movement) sleep. Additionally, if you find you're restless because you're feeling too hot, your sleep quality may be affected.

Is it OK to sit on top of an electric blanket?

Don't sit or lay on top of an electric blanket; this may damage the internal coils of the blanket and expose the heating element to a combustible material (the blanket).

What is the lifespan of an electric blanket?

​Electric Blankets should be replaced every 10 years and tested every 2 years by a qualified electrician. ​Always check your blanket for scorch marks, water damage, mould or exposed wires. If you see any of these on your blanket do not use it, replace it.

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