for product safety and consumer safety. they are wasting that 1kw-2kw energy but not producing the maximum achievable heat out of that energy
meaning they are not even approaching the limits of physics
Can you please elaborate on what happens to that energy that is not turned into heat in an electric heater?
Because unless it is either magically sent back to the grid or it's used to electrocute everyone in the room it does break the
first law of thermodynamics.
So do enlighten me on what happens to the "wasted energy" in a heater.