Space Heater Electricity Cost: Calculate & Save Money
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The average cost to run a space heater is about $0.14 to $0.20 per hour, depending on wattage and local electricity rates.
Space heaters provide targeted warmth, but their electricity costs can add up quickly. Understanding how much power they consume helps you make smarter heating choices and reduce winter energy bills.
How Much Does a Space Heater Cost to Run?
The average 1500W space heater costs about $0.20 per hour to operate at the national average electricity rate of $0.15/kWh. Costs vary based on:
- Wattage (typically 750W-1500W for residential models)
- Your local electricity rates
- Daily usage hours
- Thermostat settings
Space Heater Cost Calculator
| Wattage | Cost Per Hour | Cost Per Day (8hrs) | Cost Per Month |
|---|---|---|---|
| 750W | $0.10 | $0.80 | $24 |
| 1500W | $0.20 | $1.60 | $48 |
Space Heater vs Central Heating Costs
Central heating systems typically use 3000-3500 watts, but heat entire homes more efficiently than multiple space heaters. The most cost-effective approach:
- Lower central thermostat to 60-65°F
- Use a smart space heater in occupied rooms
- Turn off heaters when rooms are unoccupied
Energy-Saving Tips
Choose Efficient Models
Look for ENERGY STAR certified heaters with features like:
- Programmable thermostats
- Eco modes
- Timer functions
Improve Room Insulation
Seal drafts and consider thermal curtains to reduce heat loss. A well-insulated room needs less supplemental heating.
Use Zone Heating
Only heat occupied spaces. Close doors to unused rooms to contain warmth where needed.
Types of Space Heaters and Their Costs
Ceramic Heaters
Most common type – heats quickly and distributes warmth evenly. Average 1500W models cost $0.20/hour to run.
Infrared Heaters
More efficient for spot heating. Uses about 30% less energy than conventional heaters for the same warmth.
Oil-Filled Radiators
Slower to heat but retain warmth longer. Good for all-night use. Check out top oil-filled models with fans for better heat distribution.
Winter Heating Bill CutterSee what every heater in your home really costs, heat the rooms you use, and cut the waste in 30 days.Cost-per-hour tables for every heaterThermostat schedule and draft-proofing planRunning-cost and bill calculator (Excel)Safety Considerations
Space heaters cause about 1,700 fires annually according to the National Fire Protection Association. Follow these precautions:
- Keep 3-foot clearance from flammables
- Never leave unattended or run overnight
- Plug directly into wall outlets (no extension cords)
- Choose models with tip-over and overheat protection
For outdoor heating needs, consider propane space heaters which use different fuel sources.
Long-Term Cost Savings
While space heaters have higher hourly costs than central heat for whole-home warming, they can save money when used strategically:
- Reducing central thermostat by 10°F can save up to 10% on heating bills
- Heating only occupied rooms avoids wasting energy
- Newer models with advanced thermostats prevent overheating
The U.S. Department of Energy recommends space heaters as an effective supplement to central heating when used properly in well-insulated spaces.
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