Space heaters typically use less energy than central heating, making them more efficient for heating small areas, but overall costs depend on usage and electricity rates.
Space heaters can be energy-efficient for heating small areas, but central heating often wins for whole-home warmth. The answer depends on your home size, insulation quality, and heating habits.
When Space Heaters Save Energy
Space heaters work best in these situations:
- Heating a single room for short periods
- Supplementing central heat in drafty areas
- Providing targeted warmth in home offices
According to SaveOnEnergy, space heaters use less energy than central heating when heating small spaces. A 1,500W space heater running 8 hours daily costs about $1.80 per day at $0.15/kWh.
Most Efficient Space Heater Types
1. Ceramic Heaters
These provide quick, even heat and automatically shut off if tipped over. The Kuhaus ceramic heater offers excellent safety features.
2. Oil-Filled Radiators
These retain heat well and continue warming after turning off. The Mill 1500W oil heater is a top choice for bedrooms.
When Central Heating Is More Efficient
| Situation | Energy Savings |
|---|---|
| Heating 3+ rooms | Central heat saves 20-40% |
| Cold climates | Gas furnaces cost half as much to run |
| Well-insulated homes | Central systems maintain heat better |
Modern central systems like Energy Star-rated furnaces achieve 95% efficiency. Heat pumps can provide 300% efficiency by moving heat rather than generating it.
Maximizing Central Heating Efficiency
- Set thermostats to 68°F when awake
- Lower temperature 7-10°F when sleeping/away
- Seal ductwork leaks
- Change filters monthly
Key Cost Factors
Consider these when choosing between space heaters and central heating:
- Home Size: Space heaters work for ≤500 sq ft
- Insulation: Poor insulation favors central systems
- Fuel Costs: Compare electricity vs gas rates
- Usage Patterns: All-day vs intermittent heating
For most homes, a hybrid approach works best – use central heating as the primary source with strategic space heater use in frequently occupied rooms. This balances comfort and efficiency.
