eli5: If most electronic appliances’ efficiency losses are through heat, does that mean that electric heaters are 100% efficient?

Question

Edit:

Many thanks for your input everyone!

Just to clarify, I don’t want to take into account the method of generating electricity or shipping it to the home, or the relative costs of gas and electricity. I just want to look at the heater itself! i.e. does 1500W of input into a heater produce 1500W of heat, for example? Or are there other losses I haven’t thought of. Heat pumps are off-topic.

In: 1063

Answer 1

In terms of converting electricity to heat, yes nearly 100% minus the power for the circuit board and loses through traveling the wire. But heat doesnt necessarily mean heat towards heating up your room. It could be heat that’s generated internal to the heater and dissipated before it makes any impact to your room.