How Much Does a Heated Blanket Cost to Run

With rising energy prices across the UK, many households are looking for ways to stay warm without turning up the central heating. Heated blankets, also known as electric blankets, have become increasingly popular because they provide targeted warmth at a relatively low running cost. One of the most common questions from homeowners and tenants alike is how much does a heated blanket cost to run. The answer depends on factors such as the wattage of the blanket, the electricity tariff you are on, and how often you use it. Understanding these factors can help you make an informed decision about whether a heated blanket is a practical and cost effective way to keep warm.

How Heated Blankets Work

A heated blanket contains a network of fine wires or heating elements that warm up when electricity flows through them. Most modern blankets have multiple heat settings and timers that allow users to adjust the level of warmth to their preference. Unlike central heating, which works to warm an entire house or flat, a heated blanket only heats the area immediately in contact with it. This makes them more efficient for personal use, especially at night or when relaxing on the sofa.

Energy Consumption and Wattage

The cost of running a heated blanket depends on its wattage. A typical electric blanket designed for a single bed may use around 50 to 100 watts, while a double or king sized version may use between 100 and 200 watts. To put this into perspective, a standard kettle can use up to 3,000 watts, meaning a heated blanket consumes a fraction of the energy. The lower power consumption is the main reason why many households see them as a cost effective alternative to heating the whole property.

Calculating the Cost to Run

To work out how much a heated blanket costs to run, you can use a simple calculation. Multiply the wattage of the blanket by the number of hours you use it, then divide by 1,000 to convert it to kilowatt hours (kWh). Once you have the kWh figure, multiply it by your electricity tariff. For example, a 100 watt heated blanket used for 6 hours would consume 0.6 kWh. If your electricity costs 28p per kWh, the cost would be just under 17 pence for the night. Over a month, using it every night, the total would be around £5.

This is considerably cheaper than running a central heating system for the same period. Depending on the size of your home and the efficiency of your boiler, heating a whole property for several hours each evening can cost several pounds per day. This stark difference highlights why many people now turn to heated blankets as a supplementary or alternative source of warmth.

Factors That Influence Running Costs

While the basic calculation provides a good estimate, several factors can influence the actual cost. The size of the blanket makes a difference, as larger blankets use more watts. The heat setting you choose also matters, since higher levels consume more electricity. Using timers and thermostats can help reduce costs by preventing the blanket from being left on longer than necessary. Your electricity tariff plays a role too, with those on fixed rates paying less than those on variable or peak time tariffs.

The condition of the blanket is another factor worth considering. Modern electric blankets are designed to be energy efficient and safe, but older models may be less efficient and carry higher risks of wear. Replacing an old blanket with a newer one not only improves safety but can also help to keep running costs down.

Safety and Usage Considerations

While heated blankets are cost effective, they should always be used with care. Always follow the manufacturer’s instructions and avoid folding or creasing the blanket while in use, as this can damage the internal wires. Most modern blankets are fitted with overheat protection and automatic shut off timers, which improve safety and help reduce unnecessary energy use. It is also advisable to check your blanket regularly for any signs of wear, such as frayed fabric or exposed wires, and replace it if necessary.

In terms of household suitability, heated blankets are safe for most adults but may not be suitable for very young children, pets, or individuals with certain medical conditions. If in doubt, consult the guidance provided with the product or seek professional advice.

Alternatives to Heated Blankets

For those looking for other low cost ways to stay warm, heated throws and mattress toppers offer similar benefits. A heated throw is often less powerful than a full sized electric blanket and can be draped over you while sitting on the sofa. Heated mattress toppers, on the other hand, are designed to heat the whole bed more evenly. While these products vary in wattage, the running costs remain relatively low compared with other heating options.

Layering up with duvets, thermal bedding, or thicker curtains can also help reduce reliance on central heating. However, for targeted and adjustable warmth, a heated blanket remains one of the most efficient solutions available.

Conclusion

A heated blanket is a low-cost way to stay warm, with typical running costs of just a few pence per night. For most households, even regular use throughout the winter months adds up to only a few pounds on the electricity bill. By understanding wattage, usage patterns, and tariff rates, homeowners and tenants can estimate their own costs with ease. Combined with safe usage and proper maintenance, a heated blanket offers an affordable and practical way to cut heating bills while staying comfortable in colder weather.