Sort of.
If you boil water in a convection oven, and you boil water in a microwave... when you open the door to the microwave, you generally will not feel a rush of hot air. But the convection will have that effect.
The microwave is directly heating the water, and anything with more density... while the convection oven is heating the air and slowly transferring the energy to the water.
A true radiant heater should allow for the individual to ''turn down'' the heat, thus using less energy to create the same sensation.
The glow of elements giving off visible light, actually produces less heat. The perfect radiant heater (and there are none on the market that I know of) would only produce electromagnetic waves in a range that is invisible to the eye. The same way a perfect tanning bed would only produce waves on the other side of the spectrum.
Since we don't have perfect... the degree that an appliance produces EM waves in the defined range that we want... is more efficient.
The LED is more efficient because it produces the more EM in the visible light spectrum than the incandescent.
Of course, if we put an LED in an EasyBake oven... the cake never cooks.
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