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What are the best energy-efficient heaters for your home?

  • December 3, 2022
  • 7 replies
  • 2593 views

Can anyone recommend a good efficient electric wall heater. The one I currently have is eating electric and I can't afford to have the heating on.

Any help would be appreciatedĀ 

Best answer by Tim_OVO

Updated on 16/05/25 by Emmanuelle_OVO:

All electric heaters are about 100% efficient so produce 1kWh of heat for every kWh of electricity. There aren't any that are more efficient but they do differ in how they deliver the heat. It's your choice of what you want. A fan heater, infra red heater, convection heater or an electric radiator.

@M.isterWĀ would an electric radiator tend be oil filled? We have one and it’s big, heavy, slow to hear up, but keeps the room warmer for longer. A fan heater is a way to get a short blast of heat that goes quickly. That’s my experience at least.Ā @Beaky22Ā what sort of use case are you looking for?

Ā 

@M.isterWĀ with the 100% efficiency in mind, it’s safe to assume that some heaters use more kWh than others - I imagine fan heaters to be the most costly of these if left on for 30 minutes compared to others but this is guess work. I’m hoping others may have something more concreate.Ā Ā In the meantime, OVO have created a guide here:

Ā 

What are the best energy-efficient heaters for your home?

7 replies

M.isterW
Carbon Catcher***
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  • Carbon Catcher***
  • December 3, 2022

All electric heaters are about 100% efficient so produce 1kWh of heat for every kWh of electricity. There aren't any that are more efficient but they do differ in how they deliver the heat. It's your choice of what you want. A fan heater, infra red heater, convection heater or an electric radiator.


Tim_OVO
Retired Moderator
  • OVO Forum Legend
  • Answer
  • December 5, 2022

Updated on 16/05/25 by Emmanuelle_OVO:

All electric heaters are about 100% efficient so produce 1kWh of heat for every kWh of electricity. There aren't any that are more efficient but they do differ in how they deliver the heat. It's your choice of what you want. A fan heater, infra red heater, convection heater or an electric radiator.

@M.isterWĀ would an electric radiator tend be oil filled? We have one and it’s big, heavy, slow to hear up, but keeps the room warmer for longer. A fan heater is a way to get a short blast of heat that goes quickly. That’s my experience at least.Ā @Beaky22Ā what sort of use case are you looking for?

Ā 

@M.isterWĀ with the 100% efficiency in mind, it’s safe to assume that some heaters use more kWh than others - I imagine fan heaters to be the most costly of these if left on for 30 minutes compared to others but this is guess work. I’m hoping others may have something more concreate.Ā Ā In the meantime, OVO have created a guide here:

Ā 

What are the best energy-efficient heaters for your home?


M.isterW
Carbon Catcher***
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  • Carbon Catcher***
  • December 5, 2022

There's a great podcast on this subject, available on BBC Sounds. It's part of the "Sliced Bread" series by Greg Foot and I can recommend listening to it to find out more about the different types of electric room heater.

Ā 

https://www.bbc.co.uk/sounds/series/p07012sf


  • Carbon Cutter*
  • September 22, 2025

I have something more to add.Ā Ā All electric resistance heaters are 100% efficientĀ at converting electricity to heat. So when we talk about a "more efficient" electric heater, we're usually talking about features that help the heater heat the space more effectively and comfortablyĀ without wasting energy, rather than a more efficient conversion of energy.

The key to saving money is toĀ use less energy overall, which means either heating the space more smartly or heatingĀ youĀ more directly.


Ben_OVO
Community Manager
  • Community Manager
  • September 23, 2025

​@BearNavyĀ welcome to the OVO Forum and thanks for your insight here!

Ā 

Have you had a new heating system installed at all?


Peter E
Plan Zero Hero
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  • Plan Zero Hero
  • September 23, 2025

Unless you go to a heat pump then resistive heaters are the only types that are available but there are still options. Radiant heaters directed at you will make you feel warmer by heating you up rather than the whole room. Also, having an electric ’throw’ on the sofa or chair will warm you up very efficiently which will reduce the need to heat the whole room up so much. We have one of those and they are lovely. Hope that helps.

Ā 

PeterĀ 

Ā 


  • Carbon Cutter*
  • September 25, 2025

Is it a radiant heater (you see glowing coils) or a fan-forced heater (blows hot air)? What are its dimensions and power rating (e.g., 1500W, 2000W)? This will determine what can fit in its place, including whether you can install one of the ductlessĀ mini split air conditioner modelsĀ as a replacement.