Once you know the wattage, it becomes very easy to calculate the cost. This is how much it will cost per night, per month, and per winter.
Nightly Power Consumption
Perform the mathematical calculations: watts × hours ÷ 1,000 = kWh
Example of an 8-hour night:
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60W blanket : 60 x 8 /1,000 =0.48 kWh
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100W blanket: 100 × 8 ÷ 1,000 = 0.8
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120W blanket: 120 × 8 ÷ 1,000 = 0.96
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Monthly and Seasonal Electric Blanket Costs
Given an average U.S. rate of electricity around $0.13 per kWh, here’s a breakdown of actual costs: – Per night: around 6-15 cents – Per month (30 nights): $1.80 – Winter (approximately 4 months): $7.20 to $18. By comparison, a space heater using 1,500 watts costs $1.50 per night, which is a tenfold increase in cost. During winter, such a space heater will cost approximately $180, and the electric blanket makes little impact on the expenditure.
