The average electric heater cost per month typically ranges from $30 to $100, depending on usage, electricity rates, and heater efficiency.
Electric heaters provide targeted warmth during cold months, but how much do they add to your monthly bill? Costs range from $30 to $100 per month depending on wattage, usage hours, and local electricity rates. This guide breaks down the math and offers money-saving tips.
How to Calculate Electric Heater Costs
Three factors determine your monthly electric heater expense:
- Wattage: Most residential heaters use 750W (low) or 1,500W (high)
- Usage hours: Daily runtime × days per month
- Electricity rate: National average is 16¢/kWh (varies by location)
Sample Monthly Cost Calculation
| Wattage | Daily Use | Monthly Cost |
|---|---|---|
| 750W | 4 hours | $14.40 |
| 1,500W | 8 hours | $57.60 |
Formula: (Wattage ÷ 1,000) × Hours × Days × Rate = Monthly Cost
Comparing Heater Types
Not all electric heaters consume energy equally. Consider these alternatives:
Infrared Heaters
More efficient for direct heating. Models like the Heat Storm Phoenix use 1,500W but heat objects directly.
Oil-Filled Radiators
Slower to heat but retain warmth longer. The Mill 1500W cycles on/off to maintain temperature.
Regional Cost Variations
Electricity rates significantly impact costs:
- Hawaii: 44¢/kWh ($158/month for 1,500W)
- Washington: 10¢/kWh ($36/month for 1,500W)
Check your utility bill for exact rates or visit the U.S. Energy Information Administration for state averages.
Smart Usage Tips
Zone Heating Strategy
Heat only occupied rooms. Close doors and use draft stoppers to contain warmth.
Thermostat Settings
Lower your main thermostat by 5-10°F when using space heaters to maximize savings.
Timer Controls
Use built-in timers or smart plugs to prevent unnecessary overnight operation.
Safety Considerations
While cost-effective, electric heaters require caution:
- Keep 3 feet from flammable materials
- Plug directly into wall outlets (no extension cords)
- Choose models with tip-over and overheat protection
For garage or workshop use, consider a built-in gas heater as an alternative.
Long-Term Savings
While monthly costs add up, strategic use can reduce overall heating expenses:
- Pair with proper insulation
- Use in frequently occupied rooms only
- Combine with solar window heaters for passive warmth
Remember that electric heaters work best as supplemental heat sources rather than whole-home solutions in cold climates.
