How Much Electric Does an Electric Blanket Use

Electric blankets are a comforting and cost-effective way to stay warm, particularly during cold winter nights in the UK. They offer a gentle, steady source of warmth and often use far less electricity than central heating or portable heaters. However, many homeowners still wonder how much electric an electric blanket actually uses and whether it makes a noticeable difference to their bills. Understanding how these blankets work and what influences their energy use can help you enjoy their comfort efficiently and safely.

Average Power Consumption of Electric Blankets

Most electric blankets used in the UK consume between 50 and 150 watts per hour, depending on size, model, and heat setting. A single-sized blanket typically uses around 60 watts, while a double or king-sized version might use up to 120 watts. To put that into perspective, running a 100-watt electric blanket for one hour consumes 0.1 kilowatt-hours (kWh) of electricity. At the current UK average rate of around 30 pence per kWh, that means one hour of use costs about 3 pence. Even if you use the blanket for eight hours overnight, it would cost less than 25 pence in total. Compared to running an electric heater that can use over 2 kW per hour, an electric blanket is a highly efficient heating choice.

Comparing Electric Blankets to Other Heating Options

Electric blankets are far more energy-efficient than room heaters or radiators because they heat the person, not the entire room. A 2 kW portable heater running for one hour costs about 60 pence, whereas an electric blanket running for the same time costs only a few pence. Many households find that using an electric blanket allows them to turn down or even switch off central heating at night, saving money on energy bills. They are especially popular with people who spend long periods in bed or who prefer direct warmth rather than heating unused rooms.

How Usage Habits Affect Electricity Consumption

The way you use your electric blanket has a direct impact on energy use. Many models are designed to preheat the bed for a short period before bedtime, using full power initially and then dropping to a lower maintenance level once warmth is achieved. If you leave it running throughout the night, the consumption remains modest because most blankets automatically regulate their temperature to avoid overheating. Using the preheat function for 30 minutes and then switching to a lower setting once in bed can reduce consumption even further. If your blanket has an automatic timer or adjustable heat zones, you can fine-tune it for maximum comfort without unnecessary energy use.

Estimated Costs for Daily and Monthly Use

Let’s take a typical double electric blanket rated at 100 watts. Using it for eight hours per night would consume 0.8 kWh of electricity, costing around 24 pence at current UK rates. Over a month of nightly use, that totals about £7.20, which is significantly cheaper than running central heating for the same period. A smaller single blanket running on a lower setting would cost even less, perhaps £4 to £5 per month. Even heavy use during colder months rarely costs more than £10 per month, making electric blankets one of the most economical ways to stay warm.

Modern Energy-Efficient Features

Recent electric blanket designs include a range of energy-saving features. Many have thermostatic control that automatically adjusts power to maintain an even temperature, reducing the need for constant heating. Dual control models for double beds allow each side to be heated independently, so one person can turn their side off or lower the setting, halving energy use. Overheat protection, timer functions, and quick preheat modes also help you manage power consumption more precisely. If your blanket is older, upgrading to a newer, energy-efficient model can provide better warmth at lower running costs.

Safety and Maintenance Considerations

Electric blankets are generally very safe when used correctly, but it is important to follow manufacturer instructions and inspect them regularly. Always check the plug, cable, and connectors for signs of damage before use. Modern blankets come with built-in overheat protection that automatically switches them off if a fault occurs. They should be laid flat without creases and never used when wet or folded. Avoid placing heavy objects on top of the blanket and ensure that pets do not scratch or damage the surface. Most electric blankets are washable, but always detach the control unit and follow the care label carefully. If the blanket is more than ten years old or shows wear, it should be replaced rather than repaired.

How Energy Ratings and Settings Influence Power Use

Although electric blankets do not have energy ratings like large household appliances, their efficiency still varies by brand and design. Thicker, insulated models tend to retain heat better and require less electricity to stay warm. Running a blanket on a lower setting uses roughly half the power of a high setting, with little difference in comfort once the bed is preheated. Many people find that starting on a higher temperature for twenty minutes before bed and then reducing it for overnight use provides the ideal balance between comfort and cost. Using the lowest setting that keeps you warm enough is always the most efficient approach.

Smart Controls and Energy Monitoring

Some modern electric blankets now feature smart technology that connects to mobile apps or smart plugs, allowing you to control temperature and timing remotely. This not only adds convenience but also helps prevent wasted energy by ensuring the blanket is never left on unnecessarily. Pairing your blanket with an energy monitoring plug can show exactly how much electricity it uses, helping you track costs in real time. These tools are particularly useful for households trying to stay within budget during the colder months without sacrificing comfort.

When to Replace an Electric Blanket

Like all electrical items, electric blankets have a finite lifespan. Most manufacturers recommend replacing them every seven to ten years, even if they still appear to work properly. Over time, the internal heating wires can become less efficient or develop weak spots, which can affect both performance and safety. If your blanket takes longer to heat up or shows uneven warmth, it may be a sign that it is nearing the end of its life. Investing in a new, efficient model not only improves safety but also reduces electricity use thanks to modern technology and better insulation.

Electrical Safety and Proper Usage

As with any household appliance, electric blankets should always be used with proper electrical protection. They should be plugged directly into a wall socket rather than an extension lead to prevent overheating. If you frequently use multiple high-power devices in the same room, a qualified electrician can inspect your circuits to ensure they can safely handle the load. It is also advisable to check that your home is fitted with residual current devices (RCDs), which instantly cut off power if a fault occurs. This added layer of protection ensures both safe operation and peace of mind during nightly use.

Conclusion: Warmth and Comfort at Low Cost

Electric blankets are one of the most energy-efficient and affordable ways to stay warm during the colder months. Using between 50 and 150 watts per hour, they cost only a few pence to run, making them significantly cheaper than heating an entire room. With proper use, modern safety features, and smart temperature control, you can enjoy reliable comfort without worrying about excessive energy bills. For homeowners, consulting a qualified electrician ensures your outlets and wiring are suitable for safe and efficient use, so you can make the most of your electric blanket throughout winter with warmth, comfort, and confidence.