The 10 best energy efficient electric heaters of 2026

The Russell Hobbs 2kW oil-filled radiator delivers the main benefits of oil-filled heating at a very low price. Nine fins filled with oil warm up and radiate steady, gentle heat, and keep releasing it after the element switches off. It runs silently, which makes it popular for bedrooms and home offices.

Three power settings of 800 W, 1,200 W and 2,000 W let you match the output to the room and the weather, and the adjustable thermostat switches the element on and off to hold the temperature. There is no timer, so you need a plug-in timer if you want it to come on before you get home, and the thermostat dial uses numbers rather than degrees, so it takes a little trial and error. Safety features include overheat protection and a tip-over switch. With more than 9,000 ratings on Amazon.co.uk, UK buyers mainly praise its value, quiet operation and reliability.

The Dyson Purifier Hot+Cool HP10 is not cheaper per kWh than any other heater here, but it combines three devices in one. In winter it heats a room quickly using Air Multiplier technology, in summer it works as a bladeless fan, and all year round its sealed HEPA H13 filter captures fine dust, pollen and pet allergens.

The digital thermostat holds the temperature to within a degree and stops heating as soon as the room reaches your target, which avoids overheating and waste. Focused mode directs warmth at you, while Diffused mode spreads it around the room. There are no exposed hot surfaces, so it is a safer choice around children and pets, and you can control it with the MyDyson app or a voice assistant. At around £399 it is a big outlay compared with an oil-filled radiator, and the filter needs replacing roughly once a year. UK buyers with allergies say it is worth it for the cleaner air alone.

The Dimplex Cadiz Eco looks like an oil-filled radiator but has no oil inside. It uses a micathermic element that heats a thin sheet of mica, giving out a mix of radiant and convection heat. The big advantage is speed: it reaches full output within a couple of minutes, while an oil-filled radiator can take twenty minutes or more.

That makes it a good fit for rooms you only use for a short time, as you are not paying to heat up a body of oil first. Three heat settings, an electronic thermostat and a 24 hour timer give you good control, and there is an eco mode that limits power use. Without oil it is noticeably lighter and easier to carry upstairs. The trade-off is that it stops giving out heat soon after switching off. Dimplex is a long-established UK heating brand, and buyers praise how quickly the Cadiz warms a room and how quiet it is, with only a slight ticking as it heats.

The Dragon 4 Pro is the bigger brother of the standard Dragon 4, with 2.5 kW of output and a digital control panel. It suits large open-plan living rooms, extensions and older UK houses with poor insulation, where a 2 kW radiator can struggle on the coldest evenings.

The digital thermostat lets you set an exact temperature, and Eco mode automatically selects the lowest power setting that will maintain it, which cuts running costs. The 24 hour programmable timer means it can warm the room before you get home. Like the standard Dragon, the fins push heat upwards and outwards for faster warm-up and the oil holds heat after switching off. It is silent and has a safety cut-out. It is large and heavy, and at around £189 it costs more than many rivals. UK buyers say it keeps big rooms properly warm and appreciate the clear digital display compared with the basic dial on cheaper radiators.

The Princess Smart Glass Panel Heater is a slim convector heater with a tempered glass front that looks much smarter than a traditional heater. It can stand on its feet or be fixed to the wall, which makes it a good option for conservatories, extensions and home offices where floor space is tight.

The smart features are where it saves energy. Through the Princess Home app you can set weekly schedules room by room, adjust the temperature remotely and check it is switched off when you are away. Open window detection cuts heating if the temperature suddenly drops, so you do not waste electricity while airing a room. The digital thermostat keeps the temperature steady. The glass front gets hot to the touch, so take care with small children. Some buyers found connecting it to Wi-Fi fiddly. UK owners praise the look and say the scheduling helps them use less electricity than an old manual heater.

The Pro Breeze OmniWarm is one of the best-selling oil-filled radiators on Amazon.co.uk and offers features you usually find on pricier models. It has 11 oil-filled fins and three heat settings up to 2,500 W, so it can handle larger living rooms and open-plan spaces.

The digital control panel shows the set temperature, and a remote lets you adjust it from the sofa. The 24 hour timer can switch it on before you wake up or get home, and the thermostat cycles the element to hold the temperature. Safety features include overheat protection and a tip-over switch. Like all oil radiators it takes a while to warm up and holds heat afterwards. It is bulky and the build is less refined than the De'Longhi Dragon, but at around £79 it is very good value for a 2.5 kW radiator with a timer and remote. UK buyers say it keeps big rooms cosy and like the convenience of the remote.

The De'Longhi Capsule is a compact ceramic fan heater that is ideal for short bursts of warmth. A ceramic element heats up almost instantly, and the fan pushes warm air into the room, so you feel the difference within a minute or two. That makes it efficient for rooms you use briefly, as you only pay for heat while you are there.

Two heat settings of 900 W and 1,800 W and an adjustable thermostat give basic control, and a ventilation mode works as a fan in summer. The compact rounded design looks good on a desk or floor and is easy to carry from room to room. Safety features include a tip-over switch and overheat cut-out. The fan is audible, which some find distracting in a bedroom, and the heat stops the moment the heater turns off. There is no timer. UK buyers like how quickly it warms a cold room and how small and attractive it is compared with typical fan heaters.

The Dimplex 402TSTIF is a straightforward convector heater that has been a staple of UK homes for years. A convector heats air that rises naturally out of the top of the heater, gradually warming the room. This model adds a turbo fan that speeds that process up when you first switch it on, then you can turn the fan off for quiet convection heat.

Three heat settings up to 2 kW and an adjustable thermostat give reasonable control, and the built-in 24 hour timer lets you schedule it so it is not running when you do not need it. It is light and can stand on the floor or be wall mounted. The styling is basic, and the turbo fan is noisy, but the heater itself is reliable and well built. At around £69 it is good value for a branded heater with a timer. UK buyers mainly use it in conservatories, hallways and garden rooms, where they appreciate the fast warm-up.

The Pro Breeze 2000W Mini Ceramic Fan Heater is one of the most popular heaters on Amazon.co.uk, with more than 28,000 ratings. It is tiny and very cheap, and that is exactly why people buy it: placed under a desk or next to the sofa, it warms you directly rather than trying to heat a whole room.

That targeted approach can be very energy efficient. Running at 1,000 W for an hour while you work costs around 27p at current UK prices, much less than heating the whole house. It has two heat settings, a cool fan mode and an adjustable thermostat, plus a tip-over switch and overheat protection. The fan is fairly loud, so it is not ideal for bedrooms, and it is not powerful enough to heat a large cold room properly. There is no timer. UK buyers love how quickly it warms their feet and legs while working from home, and many say it has cut their heating bills.