Energy bills remain high, and with colder weather settling in, keeping warm without overspending can feel like a bit of a puzzle. But there’s good news? Choosing the right electric heater can make a big difference to both your comfort and your wallet.
Electric heaters are already 100% efficient at converting electricity into heat, but the real savings come from smart features - whether ECO modes, thermostats, timers and Wi‑Fi control. All great ways to help you stop wasting energy and limit heating to where you really need it most. Many of the models below use lower wattage, heat‑retaining materials or intelligent tech to reduce running costs even further. Some, like the SMARTAIR Boost XL cost less than 1p per hour to run.
Below, you’ll find the 10 best energy‑efficient electric heaters available at Currys right now - plus tips to help you pick one that suits your space.
How to choose an energy‑efficient heater
Wattage vs room size
Picking the right wattage helps you avoid overspending on heat you don’t need:
Small rooms: 500–1000W
Medium rooms: 1000–1500W
Large rooms: 2000W+
To give you a sense of running costs: a 2000W heater costs around 68p per hour at 34p/kWh. Going for a lower‑wattage option or using ECO mode can noticeably reduce that.
Energy‑saving features worth having
Look out for:
Eco mode
Adjustable thermostat
Programmable timer
Smart app control
These features help you heat smart - not just heat more.
Types of heaters
Each heater type delivers warmth differently:
Fan heaters: Fast heat, higher running cost
Convector heaters: Steady, quiet warmth
Oil‑filled radiators: Long‑term efficiency and heat retention
Ceramic heaters: Retain warmth well and heat up quickly
10 best energy‑efficient electric heaters
1. AENO Premium Eco AGH0005S Smart Panel Heater
The AENO Premium Eco AGH0005S Smart Panel Heater delivers ultra‑efficient heat using just 760W, blending infrared and convection warmth for a comfortable, even feel. With smart app scheduling and ECO mode, it only uses the energy you actually need.
Ideal for: Medium rooms, smart‑home setups.
2. Duux Edge 1000 DXCH20UK Smart Convector Heater
The Duux Edge 1000 DXCH20UK Smart Convector Heater offers whisper‑quiet heating thanks to its fan‑free design, all while drawing just 1000W. Slim, stylish and app‑controlled, it lets you set precise heating schedules for efficient, cosy warmth.
Ideal for: Bedrooms or peaceful spaces.
3. BELDRAY EH3110V2 Portable Smart Panel Heater
The BELDRAY EH3110V2 Portable Smart Panel Heater uses a ceramic core to retain heat, meaning it stays warm for longer without constantly powering up. With Wi‑Fi controls, timers and wall‑mount or freestanding options, it's versatile and energy‑aware.
Ideal for: Medium rooms and smart‑home users.
4. LOGIK L20THW24 Ceramic Fan Heater
The LOGIK L20THW24 Ceramic Fan Heater is compact, affordable and efficient, offering quick heat with ECO mode, oscillation (which means heat is spread evenly) and a timer. It’s a great option when you want fast warmth without switching on the whole heating system.
Ideal for: Small rooms or targeted heat.
5. DREO Solaris Slim H3 Portable Fan Heater
The DREO Solaris Slim H3 Portable Fan Heater brings rapid heat with multiple temperatures. At 1500W with smart temperature control, it warms rooms quickly while keeping energy use in check.
Ideal for: Living rooms, offices or anywhere you need to heat up quick.
6. STATUS OFH9‑2000W1PKB Oil‑Filled Radiator
The STATUS OFH9‑2000W1PKB Oil‑Filled Radiator delivers long‑lasting, quiet heating. Its oil‑filled fins retain heat long after switching off, reducing energy consumption during longer heating sessions.
Ideal for: Larger rooms or all‑evening warmth.
7. Dyson Hot+Cool Gen 1 Purifying Fan Heater
The Dyson Hot+Cool Gen 1 Purifying Fan Heater is a premium 3‑in‑1 device, combining heating, cooling and air purifying in one sleek design. Intelligent temperature control helps maintain consistent warmth without wasted energy.
Ideal for: Premium buyers and year‑round use.
8. LOGIK L20CTH23 Portable Ceramic Fan Heater
The LOGIK L20CTH23 Portable Ceramic Fan Heater is a reliable, compact and energy‑efficient pick. With ECO mode, room-filling oscillation and essential safety features like a tip‑over cut‑off, it’s a safe and effective choice for personal heat.
Ideal for: Small rooms or desk‑side heating.
9. SMARTAIR Boost XL Portable Fan Heater
The SMARTAIR Boost XL Portable Fan Heater is ultra‑low wattage and costs less than 1p per hour to run - making it one of the cheapest heating options available. Lightweight and directional, it’s perfect for warming yourself without heating a whole room.
Ideal for: Desks, sofas and personal heating zones.
10. DELONGHI Capsule You & Me Ceramic Fan Heater
The DELONGHI Capsule You & Me Ceramic Fan Heater combines quiet performance with stylish design. With both horizontal and vertical placement options and an ECO mode that automatically reduces consumption.
Ideal for: Style‑driven homes and small rooms.
The best energy‑efficient heaters compared
A quick overview of the highlights:
Lowest wattage: AENO Premium Eco at 760W
Quietest bedroom option: Duux Edge 1000
Best heat retention: BELDRAY Smart Panel
Cheapest to run: SMARTAIR Boost XL at 1p per hour
Best for large rooms: STATUS Oil‑Filled Radiator
Best premium pick: Dyson Hot+Cool Gen 1
| Heater Model | Power (W) | Type | Energy-Saving Features | Pros | Best for |
|---|---|---|---|---|---|
| AENO Premium Eco Smart Panel Heater | 760 W | Panel | Smart app control, ECO mode | Ultra-low wattage, silent operation | Medium rooms |
| Duux Edge 1000 Smart Convector Heater | 1000 W | Convector | Smart scheduling, thermostat | Quiet, slim design | Bedrooms |
| BELDRAY EH3110V2 Smart Panel Heater | 2000 W | Panel | Wi-Fi control, ceramic core | Heat retention, versatile mounting | Medium rooms |
| LOGIK L20THW24 Ceramic Fan Heater | 2000 W | Ceramic Fan | ECO mode, timer | Compact, affordable | Small rooms |
| DREO Solaris Slim H3 Fan Heater | 1500 W | Fan | Thermostat, oscillation | Fast heating, portable | Quick heat |
| STATUS OFH9 Oil-Filled Radiator | 2000 W | Oil-Filled | Adjustable thermostat | Retains heat, quiet operation | Large rooms |
| Dyson Hot+Cool Gen 1 Purifying Fan Heater | 50 W | Purifier/Fan/Heater | Intelligent temp control | Multifunction, premium design | Year-round use |
| LOGIK L20CTH23 Ceramic Fan Heater | 2000 W | Ceramic Fan | ECO mode, safety cut-off | Compact, safe | Small rooms |
| SMARTAIR Boost XL Portable Fan Heater | 13.5 W | Fan | Low wattage | Costs <1p/hour, lightweight | Personal heating |
| DELONGHI Capsule You & Me Ceramic Fan Heater | 2000 W | Ceramic Fan | ECO function | Stylish, quiet | Small rooms |
FAQs
Which electric heater uses the least electricity?
Low‑wattage options like the AENO Premium Eco AGH0005S or personal heaters like the SMARTAIR Boost XL are the cheapest to run.
How much does it cost to run a 1500W heater for one hour?
At 34p/kWh, a 1500W heater costs about 51p per hour.
Are electric heaters safe to leave on overnight?
Only models with safety features such as tip‑over switches and overheat protection should ever be left running—and it’s still best avoided.
Which type of heater is best for a bedroom?
Convector heaters like the Duux Edge 1000 are quiet, steady and ideal to stay warm while you sleep.
Do ceramic heaters save energy?
Yes, ceramic elements maintain heat well, which means they don’t need to cycle on as often.
What’s next?
For more heating tips and tricks, check out our Fans, heating and air treatment buying guide. And if it’s too wet and cold to peg up the washing, check out how an airer or dehumidifier can help you dry clothes indoors.
