Compare common electric heater types for a UK room and usage pattern, then get a verdict that explains whether the cheaper option is actually the better fit.
Last reviewed: 16 April 2026 - UK-focused estimate, not a full heating-system design
Electric heaters all pay the same price per kWh. The real differences come from how much heat they deliver, how long they stay near full power, and whether they suit the room and the job. That is why a fan heater can look fine for short bursts but less attractive for steady evening heating.
This tool is for plug-in or room-based direct electric heating decisions. Use the room-size calculator first if you are not sure the room can be heated comfortably by either option.
This tool is most helpful when the room and usage pattern stay fixed and you only change the heater type. If you are still unsure about room size, use the sizing tool first.
These comparisons are rarely about headline wattage alone.
An underpowered heater tends to spend longer near full output, which can erase the apparent advantage of a lower rated wattage.
Short bursts of heat favour different options from steady all-evening heating.
A technically cheaper heater may still be the wrong tool if it is noisy, too directional, or struggles in the room.
These pages help turn the calculator output into a more practical household decision.
Verdict-first guidance for one of the most common direct-electric heating decisions.
Useful when the choice is between a fixed-feeling everyday heater and slower, steadier radiant warmth.
Use this when your decision is broader than just choosing between two portable heaters.
Check the room need before putting too much weight on a small cost difference.
Handy if you want to model a custom wattage and your own duty-cycle assumption.
Per kWh, no. The difference is how long they stay near full power and whether they are a sensible fit for the room and use pattern.
Not always. For quick bursts in a smaller room, the difference can be small. For longer steady heating, an oil-filled radiator often comes out better in practice.
Yes, ideally. A comparison is far more useful once you know both options are broadly suitable for the room.