Space heaters can use a significant amount of electricity, typically ranging from 750 to 1,500 watts, which can lead to higher energy bills if used extensively.
Space heaters provide instant warmth but can significantly impact your electricity bill. Understanding their power consumption helps you make informed heating choices this winter.
How Much Electricity Do Space Heaters Really Use?
Most residential space heaters consume between 750-1,500 watts per hour. Industrial models may use up to 3,000 watts. Here’s what that means for your energy costs:
| Wattage | Hourly Cost* | Daily Cost (8 hrs) | Monthly Cost (21 days) |
|---|---|---|---|
| 750W | $0.12 | $0.96 | $20.16 |
| 1,500W | $0.24 | $1.92 | $40.32 |
*Based on national average of $0.16/kWh
For comparison, a central HVAC system uses 3,000-5,000 watts but heats your entire home. Built-in gas heaters often prove more efficient for whole-house heating.
Space Heaters vs Central Heating: Cost Breakdown
When Space Heaters Win
- Heating single rooms (home offices, bedrooms)
- Short-term use (mornings/evenings)
- Well-insulated small spaces
When Central Heating Wins
- Heating multiple rooms simultaneously
- All-day heating needs
- Large open floor plans
According to Nexamp’s research, space heaters become less efficient than central heating when used in more than 2 rooms simultaneously.
7 Ways to Reduce Space Heater Energy Use
- Use programmable timers to avoid overnight operation
- Select models with eco-modes that adjust output automatically
- Pair with smart app controls for remote management
- Insulate windows with thermal curtains
- Place heaters away from drafts and cold walls
- Use the lowest effective temperature setting
- Maintain clean filters and unobstructed airflow
Specialty Space Heaters for Efficiency
Infrared Heaters
These heaters warm objects directly rather than the air, providing more efficient targeted heating. Models like the Heat Storm Phoenix use about 30% less energy than conventional models.
Oil-Filled Radiators
While slower to heat up, these retain warmth longer and continue emitting heat after being turned off. The Mill 1500W Oil Heater maintains consistent temperatures with less cycling.
Ceramic Heaters
Ceramic elements heat quickly and distribute warmth evenly. Many include adjustable thermostats for precise temperature control.
Safety Considerations
While managing energy costs is important, safety should never be compromised:
- Always maintain 3 feet of clearance from flammable materials
- Never leave heaters unattended or run while sleeping
- 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 operate without electricity.
