Most electric blankets use about 50 to 200 watts while actively heating, depending on blanket size and heat setting.
For full system planning, use the WattSizing Calculator.
Quick Answer
Most electric blankets use about 50 to 200 W while heating. Once warmed up, many models cycle on/off, so the average draw over the night can be lower than the “on” wattage.
Detailed Explanation
Electric blankets are essentially resistive heaters. That means they don’t usually have a big motor-like startup surge, but they can still pull noticeable wattage when the thermostat calls for heat.
What changes the watt draw most:
- Size: throw and twin blankets typically use less than queen/king.
- Heat setting: higher settings keep the heating elements on more often (and sometimes at higher power).
- Dual controls: split-zone blankets are not automatically “double the watts,” but they can be higher if both sides are set high.
If you’re estimating total nighttime loads, compare it to other heating-style appliances like How Many Watts Does a Hair Dryer Use and always-on loads like How Many Watts Does a Router Use.
Watt Table
| Blanket Type | Typical Running Watts | Typical Starting Watts |
|---|---|---|
| Throw / small blanket | 50 - 100 W | 50 - 110 W |
| Twin | 60 - 120 W | 60 - 130 W |
| Full / double | 80 - 150 W | 80 - 165 W |
| Queen | 100 - 180 W | 100 - 200 W |
| King / dual-control (both zones heating) | 120 - 250 W | 120 - 275 W |
Calculation Example
Example: A queen electric blanket draws 160 W when heating. Over the night it cycles and averages about 70 W for 8 hours.
- kWh/night = (70 Ă— 8) / 1000 = 0.56 kWh
- At $0.16/kWh, that’s about $0.09/night
- Monthly cost (30 nights) is about $2.69
If you want to run it from batteries, also factor in inverter losses and your other overnight loads. The WattSizing Calculator makes it easy to total everything.
Tips to Reduce Power Usage
- Pre-warm the bed for 15–30 minutes, then lower the setting.
- Use a comforter on top; insulation reduces how often it needs to cycle.
- Avoid running it all day—electric blankets are most efficient when used for targeted warmth.
FAQs
Does an electric blanket have a big startup surge?
Not usually. It’s a resistive load, so startup draw is typically close to its normal heating draw.
Why does my watt meter fluctuate?
Many blankets use thermostatic control. They cycle on and off to maintain temperature, so the wattage rises and falls over time.
Is “low” always the same watts across brands?
No. Settings aren’t standardized. Use a watt meter if you need an accurate average for a specific model.
CTA
Want a more accurate estimate for your nights (blanket + phone chargers + fan + anything else)? Use the WattSizing Calculator to total your real loads and size the right battery and inverter.
