It depends on what kind of a heater it is.
Are any electric heaters more efficient.
In first place as the most efficient electric heater is the lasko 5409 ceramic portable space heater a small but powerful heater that will do well in almost any room size.
The most used ones are electric heaters.
Electric heat is 100 percent efficient.
Because you pay your power bill based on kwh kilowatt hours the fan heater will be more cost effective at heating your home because it will use less energy.
All electric heaters are rated 100 efficient because they convert all the energy that goes through them into heat.
Our baseboard heaters turn 100 percent of the energy that goes into them into heat.
But how efficient your indoor electric heater is depends on several factors including quality of materials controls and energy efficiency standards they have met.
The percentage of conversion of heat from electricity is around 30 of efficiency that means that the total input of electricity into this system will convert only 30 of that into heat.
If it is purely a resistance element converting electricity into heat through ohmic heating then it is true that 100 of your electric power is converted into heat and that is as efficient as it gets.
Electric heaters can be further subdivided into convection.
How to choose a space heater.