How much does it cost to run a heated blanket?
A heated blanket is an electric warming device designed to keep you warm in bed during cold months, using resistive heating elements woven throughout the fabric. Unlike central heating, which warms an entire room, a heated blanket concentrates warmth directly where you need it—under and around your body—making it energy-efficient for personal comfort during winter nights.
Heated Blanket running cost calculator
- Per day
- $0.27
- Per month
- $3.40
- Per year
- $40.80
- CO₂ / year
- 96 kg
Based on 240 kWh per year. Adjust the price per kWh to match your latest electricity bill for an exact figure.
At 200 watts used 8 hours a day, a heated blanket costs about $0.27 per day, $3.40 per month and $40.80 per year on an average rate of 17¢ per kWh — roughly 240 kWh and 96 kg of CO₂ over a year. Enter your own electricity rate and usage in the calculator above for a figure matched to your bill.
Heated blankets operate on a surprisingly modest power draw—typically around 200 watts—which is far less than many household appliances. The actual energy cost depends heavily on how long you run it each night and how many nights per year you use it. Most people turn on their blankets an hour or two before bed and leave them on throughout the night, so usage patterns vary significantly. Some users run them year-round in air-conditioned bedrooms; others use them only during the coldest three or four months. This flexibility in usage means your costs can swing dramatically based on personal comfort preferences and local climate.
The heating element itself is the key factor determining both performance and efficiency. Better-quality blankets use evenly distributed heating wires or carbon fiber technology that provides consistent warmth across the surface without hot spots. Cheap models often have clustering where some areas get too hot while others stay cold, forcing users to turn up the dial—wasting energy without improving comfort. When shopping, look for blankets that offer multiple heat settings; the ability to use a lower setting on milder nights or after you've warmed up can meaningfully reduce running costs over a season. Digital controls and timers are worth considering, as they let you automate turn-off rather than relying on memory or leaving the blanket running all night.
A common mistake is buying a blanket that's the wrong size for your needs. A blanket sized for a single twin bed doesn't help if you're using it on a queen, because you end up running it hotter or longer to feel the warmth. Conversely, an oversized blanket spread on a smaller bed wastes energy heating unused portions. Measure your bed and read product dimensions carefully. Also consider whether you sleep alone or with a partner, since sharing a blanket means splitting the available heat. Some couples buy individual blankets rather than one large one, which can actually be more efficient because each person can adjust to their own comfort level.
Material and insulation matter more than many people realize. A heated blanket placed directly over a thin cotton sheet will lose far more heat upward into cold air than one with a quilted backing or one that you snuggle under properly. The blanket works best when it's sandwiched between you and another layer of insulation—a duvet or regular blanket on top helps trap the heat instead of letting it escape into the room. Synthetic materials like polyester fleece often retain heat better than natural fibers and dry faster if you need to wash the blanket. Check the care instructions before buying; some heated blankets can't go in the dryer, which limits your ability to refresh them quickly during frequent-use seasons.
Safety and longevity also affect true cost-of-ownership. Cheaper blankets sometimes lack overheat protection or have brittle wiring that fails after a season or two, forcing replacement. A higher-quality blanket with auto-shutoff features and durable construction will last five to ten years. Inspect the cord and plug regularly for damage, and never fold a heated blanket tightly or store it in damp conditions, as moisture and compression can degrade the heating elements. Treating the appliance carefully means you won't be buying a replacement every other winter.
Frequently asked questions
- Is it cheaper to run a heated blanket all night long, or turn it off after falling asleep?
- Turning it off after you fall asleep uses less energy, but the exact savings depend on how quickly you cool down. Many people use a timer or turn off the blanket after 30–60 minutes once their bed is warm, since the blanket's insulation keeps you warm longer than you might expect. Modern blankets with programmable timers make this convenient, whereas older models require you to remember to switch them off manually.
- Does a heated blanket work well with all bed frames and mattress types?
- Most heated blankets work fine with any bed, but very soft, very firm, or adjustable beds may affect how the blanket sits and distributes heat. On adjustable beds that move frequently, the blanket can bunch up or shift, creating uneven warmth. If you have an adjustable bed, look for blankets marketed as flexible or designed for that purpose, or expect to straighten it out periodically.
- Can I wash and dry a heated blanket like a regular blanket?
- Most heated blankets have specific washing instructions—usually gentle cycle with cold water and air drying, never in the dryer. Some newer models claim to be machine washable with dryer-safe heating elements, but you must verify the manufacturer's instructions before using heat or hot water. Incorrect cleaning can damage the wires or controller, creating a safety hazard or shortening the blanket's lifespan.
- What does 'multiple heat settings' really mean for my actual comfort and costs?
- Heat settings let you dial up or down the power draw based on the room temperature and your preference. The lowest setting might use 100 watts or less, while the highest uses the full 200 watts. On a mild winter night or after you've warmed up, dropping from setting 5 to setting 3 can keep you comfortable while cutting energy use significantly. Over a season, moving between settings based on conditions is one of the simplest ways to reduce costs without sacrificing warmth.
- Does using a heated blanket instead of turning up the furnace actually save money?
- In most cases, yes. A furnace heats the entire house to 68–72 degrees, wasting energy heating empty rooms and spaces you aren't in. A heated blanket heats only your bed and body, concentrating the warmth where it matters most. However, the actual savings depend on your home's insulation, your furnace's efficiency, and your local electricity and heating fuel costs. Combining a slightly lower thermostat with a heated blanket typically gives the best balance of comfort and efficiency.
- Are there any safety concerns with running a heated blanket every night?
- Modern blankets with auto-shutoff and overheat protection are very safe for nightly use. The main risks come from old or damaged blankets with exposed wires, blankets left on the highest setting for prolonged periods, or blankets used by people with reduced sensation (elderly, diabetic, or mobility-limited individuals). Always inspect the blanket for damage before use, keep it away from water sources, and never fold it while plugged in. If you have health concerns, consult your doctor about safe use.