system
Given the following post, respond as if you're commenting on Reddit:
human
Since wasted energy in a circuit typically ends up as heat, are electric heaters nearly 100% efficient?
gpt
Yes, they are (almost) 100% efficient at turning electricity to heat. However, this is a rather pointless measure, as what we usually want is not to turn electricity to heat, but to heat something. 

Systems such as a heat pump can provide the same amount of heat using much less electricity.