Quick Answer

No, heated blankets do not use a lot of electricity. Most models draw between 50 and 200 watts, so running one for eight hours costs only a few cents to a quarter per night, depending on your local rates. That's far cheaper than heating an entire room with a space heater, which often uses 1,500 watts. If you're looking to stay warm without a high bill, a heated blanket is one of the most efficient options.

The Math Behind Heated Blanket Running Costs

To estimate your heated blanket's running cost, multiply its wattage by the hours used, then divide by 1,000 to get kilowatt-hours (kWh). Finally, multiply by your electricity rate. For example, a 100-watt blanket used for 8 hours consumes 0.8 kWh. At an average U.S. rate of 16 cents per kWh, that's about 13 cents per night. Even a higher-wattage 200-watt blanket would cost around 26 cents for the same period. Compare that to a space heater running at 1,500 watts for 8 hours: 12 kWh, or roughly $1.92. The difference is clear—heated blankets are a fraction of the cost.

Keep in mind that most heated blankets have adjustable heat settings, so you can lower the wattage by using a lower setting. Also, many models have auto-off timers, which prevent them from running all night at full power. These features make the actual cost even lower than the maximum estimates.

Heated Blanket vs. Space Heater: Which Is Cheaper to Run?

A space heater warms the air in a room, but much of that heat escapes through walls, windows, and doors. A heated blanket, by contrast, warms you directly, so you can stay comfortable at a lower thermostat setting. That's why heated blankets are often recommended as a companion to central heating—you can turn down the thermostat a few degrees and still feel cozy. For instance, lowering your thermostat by 1°F for 8 hours can save about 1% on your heating bill, according to the U.S. Department of Energy. A heated blanket makes that adjustment more comfortable.

If you only need warmth in one spot, like a couch or a desk, a heated throw is more efficient than heating an entire room. However, if you need to warm a large space, a space heater might be necessary, but it will cost significantly more to run. For personal warmth, the heated blanket wins on cost every time.

How to Keep Heated Blanket Energy Use Low

To minimize your heated blanket's impact on your electric bill, use it wisely. Start by warming your bed or couch before you get in, then turn it off or use the auto-off feature. Many blankets have timers that shut off after 1 to 10 hours. Also, choose a blanket with multiple heat settings and use the lowest comfortable setting. Finally, consider a low-wattage heated throw for targeted warmth—these typically use 50 to 100 watts, making them even cheaper to run.

If you're in the market for a heated blanket, check the wattage on the label or product description. Lower wattage doesn't mean less warmth; it often means more efficient heating elements. And remember, a heated blanket is not a replacement for a well-insulated home, but it can help you stay warm without cranking up the heat.

Heated Blanket Energy Myths: Verdicts

  • Heated blankets use as much power as space heaters.: Heated blankets typically draw 50–200 watts, while space heaters use around 1,500 watts. That's a 7 to 30 times difference. Myth busted. Heated blankets are far more efficient for personal warmth.
  • Running a heated blanket all night costs dollars.: At 100 watts for 8 hours, you'd use 0.8 kWh—about 13 cents at average U.S. rates. Even at 200 watts, it's around 26 cents. Myth busted. Nightly costs are measured in cents, not dollars.
  • All heated blankets have the same running cost.: Wattage varies by model and size. Throws often use 50–100 watts, while larger blankets may use up to 200 watts. Check the label. Compare wattage before buying to estimate your exact cost.

Bedsure Blankets That Complement Heated Warmth

  • Bubble Faux Fur Blanket: Bubble Faux Fur Blanket: 870 GSM faux fur with fiber-lock technology and Oeko-Tex certification; machine washable. A plush, heavyweight blanket like this traps warmth even without electricity, so you can use your heated blanket less and save energy.
  • 100% Cotton Gauze Spring Throw Blanket: 100% Cotton Gauze Spring Throw Blanket: lightweight, breathable 4-layer muslin with anti-static cotton. For milder nights, this breathable throw adds a layer of warmth without overheating, reducing the need for a heated blanket.
  • Bubble Waterproof Blanket: Bubble Waterproof Blanket: waterproof layer protects furniture; plush on both sides; machine washable. If you use a heated blanket on a sofa or bed, a waterproof layer underneath protects against spills and extends the life of your heated blanket.