energy efficiency
The Most Energy-Efficient Space Heaters (2026)
How to heat with less electricity: thermostats, timers, and the right heater type for your room.
Our top picks at a glance
Best thermostat control
Lasko Ceramic Tower HeaterLiving rooms that need quick warmth spread across the space.
All electric heaters convert electricity to heat at near 100 percent efficiency, so thermostats and timers are what actually save money. The DeLonghi radiator wins on residual heat; the Lasko tower wins on smart cycling.
The picks, ranked
| Pick | Max output | Heat type | Settings | Buy |
|---|---|---|---|---|
 Best overallDeLonghi Oil-Filled Radiator | 1500 watts | Oil-filled radiant | Multiple heat settings with adjustable thermostat | Check price |
| Best thermostat controlLasko Ceramic Tower Heater | 1500 watts | Ceramic with fan | High, low, and auto thermostat | Check price |
 Best low settingAmazon Basics Ceramic Space Heater | 1500 watts (high), 750 watts (low) | Ceramic with fan | Low, high, fan-only | Check price |
Best overall
DeLonghi Oil-Filled Radiator
Silent, steady radiant heat for bedrooms.
Strengths
- Completely silent operation, no fan
- Stays warm after switching off
- Sealed oil never needs refilling
Limitations
- Slow to heat a cold room
- Heavy to move between rooms
- Surface gets hot to the touch
What owners report
Commonly praised
- Silent operation, so it works well in bedrooms
- It gives steady heat that lasts after the thermostat cycles off
- Owners like the safety features such as overheat protection
Common complaints
- It is slow to warm a room compared with fan heaters
- There is often a burning smell on the first few uses
- It is heavy, and some find it underpowered for cold basements
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Max output | 1500 watts |
|---|---|
| Heat type | Oil-filled radiant |
| Settings | Multiple heat settings with adjustable thermostat |
| Timer | Programmable 24-hour timer |
| Safety | Thermal cut-off, anti-freeze setting |
Best for: Bedrooms and living rooms where silent, even heat matters.
Skip if: You need heat in under five minutes.
Best thermostat control
Lasko Ceramic Tower Heater
Fast oscillating heat with remote control.
Strengths
- Heats up quickly
- Oscillation spreads warmth widely
- Remote control included
Limitations
- Fan noise on high
- Heat stops when the unit cycles off
- Tall tower needs stable floor space
What owners report
Commonly praised
- It warms small rooms quickly and quietly
- Oscillation and the remote make it easy to live with
- Affordable and widely available
Common complaints
- Many owners notice a strong plastic smell on first use
- Heat feels weak unless you sit close to it
- The thermostat can drift, and the tall tower tips over if bumped
Recurring themes from owner reviews on retailers and forums, summarised by our editors. Updated October 2026.
| Max output | 1500 watts |
|---|---|
| Heat type | Ceramic with fan |
| Oscillation | Yes, wide-angle |
| Settings | High, low, and auto thermostat |
| Safety | Overheat protection, cool-touch exterior |
Best for: Living rooms that need quick warmth spread across the space.
Skip if: You are sensitive to fan noise while sleeping.
Best low setting
Amazon Basics Ceramic Space Heater
Compact, simple heat for small spaces.
Strengths
- Very affordable
- Compact footprint
- Simple dial controls
Limitations
- Small room coverage
- No remote or timer
- Basic build quality
| Max output | 1500 watts (high), 750 watts (low) |
|---|---|
| Heat type | Ceramic with fan |
| Settings | Low, high, fan-only |
| Safety | Tip-over protection |
Best for: Desks, dorms, and small rooms on a tight budget.
Skip if: You need to heat a large room.
Questions, answered
Are oil heaters more efficient than ceramic?
Not inherently. All resistive electric heaters are near 100 percent efficient at converting electricity to heat. Oil radiators feel efficient because they retain heat and cycle off longer.
Does a thermostat save money?
Yes, significantly. A thermostat prevents the heater from running at full blast after the room is already warm, which is where most waste happens.
Is it cheaper than central heating?
For heating one occupied room while the rest of the house stays cool, usually yes. For heating a whole house, central systems win.