An electric blanket typically costs $20-$100 to buy and about $2-$10 a month to run, while a portable space heater often costs $25-$150 and $18-$58 a month. The electric blanket vs heater cost depends most on wattage, hours of use, local electricity rates, and whether the heater warms one room or runs for long periods.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Electric blanket, purchase | $20 | $55 | $100 | Basic throw to larger or dual-control model |
| Space heater, purchase | $25 | $75 | $150 | Portable electric models; specialty units may cost more |
| Blanket electricity, monthly | $2 | $5 | $10 | About 6-10 hours per day at $0.16 per kWh |
| Heater electricity, monthly | $18 | $36 | $58 | About 4-8 hours per day, depending on thermostat cycles |
Typical blanket and space heater prices for a winter
For personal warmth, a blanket is usually the lower-cost choice in both purchase price and electricity. A common 100-watt blanket used eight hours daily consumes about 24 kWh monthly, or roughly $4 at a national planning rate of $0.16 per kWh. A 1,500-watt heater running four hours daily would use up to 180 kWh monthly, about $29 before accounting for thermostat cycling.
For a simple seasonal estimate, assume five months of use. A blanket costing $55 and using $4 of electricity monthly comes to about $75 for the season. A $75 heater running four hours daily at full power comes to about $220, including roughly $145 in electricity. Actual heater use may be lower if it cycles off, or higher with longer operation and higher utility rates.
Assumptions: U.S. electricity at $0.16 per kWh, ordinary residential use, before sales tax; actual rates vary by utility.
What purchase, electricity, and setup charges add
These products usually require no professional installation, but the purchase and energy expenses differ substantially. The cost table below separates typical upfront charges from optional services; electricity is shown as an ongoing expense rather than an installation component.
| Cost item | Electric blanket | Space heater | Notes |
|---|---|---|---|
| Equipment | $20-$100 | $25-$150 | Price varies by size, controls, and features |
| Labor | $0-$0 | $0-$0 | Typical plug-in products need no paid installation |
| Delivery/disposal | $0-$20 | $0-$30 | Delivery or haul-away may be extra |
| Taxes | $0-$10 | $0-$15 | Depends on local sales-tax rules and purchase price |
| Electricity | $0.01-$0.03 per hour | $0.12-$0.24 per hour | At $0.16 per kWh, before heater cycling |
Paid setup is rarely justified for either appliance. If an outlet is damaged, loose, or too warm during use, an electrician’s service call may cost about $100-$250 or more, depending on location and repair scope. That is a home electrical repair, not a standard product installation.
Wattage, run time, and room size change the bill
Wattage multiplied by hours of use is the clearest way to estimate operating cost. The formula is kW × hours × electricity rate. A 50-watt blanket used eight hours costs about $0.06 per night at $0.16 per kWh; a 200-watt model costs about $0.26 per night.
Most portable heaters draw up to 1,500 watts on a standard high setting. At full power, that is about $0.24 per hour, or $0.96 for four hours. A 750-watt low setting costs about half as much per hour, but may take longer to warm a large or drafty room. A 1,500-watt heater is commonly used for a small room around 150 square feet; ceilings, insulation, windows, and outdoor temperature affect how often its thermostat runs.
For monthly estimates, multiply the appliance’s kilowatts by daily hours, then by 30 and the local rate. For example, a 1.5-kW heater used six hours daily at $0.22 per kWh costs up to $59 monthly. A 100-watt blanket used eight hours daily at the same rate costs about $5 monthly.
Reduce heater and blanket costs with controlled use
Use a blanket to warm the person rather than heating an entire room when that meets the need. A programmable timer or lower heater thermostat setting can also reduce hours at full draw. Avoid running a heater in an empty room, and check whether the unit has a usable low setting before paying extra for premium controls.
Compare products by wattage and intended use, not just the shelf price. A lower-priced heater with the same 1,500-watt draw costs about the same per hour as a premium model at that setting; efficiency claims do not change the basic electricity calculation for resistance heaters. For blankets, compare size, control options, and washable design against actual needs, rather than buying features that will not be used.
How many hours make a heater more expensive?
At $0.16 per kWh, a 1,500-watt heater at full output costs about $0.24 per hour, versus about $0.016 per hour for a 100-watt blanket. On electricity alone, one hour of full-power heater use costs about as much as 15 hours of blanket use. Thermostat cycling can lower the heater’s actual consumption, so the comparison is most useful as a maximum-output estimate.
Purchase price shifts the break-even point slightly, but repeated winter use makes operating cost more important. A $75 heater used four hours daily for five months can add about $145 at full draw. The purchase cost of a blanket is often recovered quickly if it replaces several hours of heater operation, although it does not heat the room or other occupants.
Three winter-use examples show the likely totals
| Scenario | Use and energy estimate | Purchase | Five-month total |
|---|---|---|---|
| Blanket, 100 watts | 8 hours daily; about 24 kWh monthly at $0.16 | $55 | About $75 |
| Heater, moderate use | 4 hours daily at 1,500 watts; full-output estimate | $75 | About $219 |
| Heater, extended use | 8 hours daily at 1,500 watts; full-output estimate | $100 | About $561 |
These totals exclude sales tax and assume no thermostat cycling. If the heater runs at full power only half the scheduled time, its electricity cost is roughly half the table estimate. Higher electric rates, such as $0.25 per kWh, raise energy charges by about 56% compared with the $0.16 assumption.
Safety features can affect the price, not the wattage
Heater prices may rise for tip-over shutoff, overheat protection, a thermostat, or a quieter fan. Those features can improve usability, but they do not automatically lower energy use; the thermostat and actual run time matter. Keep portable heaters clear of bedding, curtains, and other combustibles, and follow the manufacturer’s instructions.
Electric blankets with automatic shutoff, separate controls, or larger dimensions may cost more than basic models. Follow the care label, inspect the cord and fabric, and do not use a product that is damaged. A blanket is intended for direct personal warmth, while a space heater warms surrounding air; substituting one for the other may not deliver the same comfort or room coverage.
Choose personal warmth or whole-room heat before buying
For one person staying in bed or seated, an electric blanket generally offers the lowest operating cost; for warming a room, a heater serves a different purpose. A heater’s bill becomes more consequential when it runs for many hours, especially at the 1,500-watt setting. If central heating is already maintaining the home, a blanket may provide personal comfort without adding substantial room-heating demand.
Neither device should be treated as a guaranteed substitute for a home heating system in dangerously cold conditions. The practical price comparison is therefore based on the service needed: personal warmth at a few cents per night, or room heat that can cost roughly $1 or more for each four-hour period at full power.