@jeffreywsnyder, technically, that is not true. While nobody can magically get more than 1,500 watts of energy out of an appliance that consumes 1,500 watts, some produce less than 1,500 watts worth of heat.
Examples of things that reduce “heat”-producing efficiency from 100%:
Fans pushing air. The fan might distribute the heat quicker but a portion of the energy used to move that air is not heat itself.
When you can see the heating elements change color - for example quartz elements that light up are using some of the energy to produce light instead of heat.
@rmsalt, for many folks in the US, that is true - Natural Gas prices have really come down but even before that Natural Gas heat was cheaper than Electric heat.
Unfortunately some rurally located folks don’t have Natural Gas available and are stuck with expensive Heating Oil or Propane (ironically made even more expensive by the oil exploration/production demands in ND last winter!) or Electric.
Then there is wonderful wood stove heat but the EPA fanatics in DC are trying to shut that down.
And pellet stoves/furnaces can make sense.
But the thing that is getting more interesting in some higher electricity cost markets - falling solar panel prices combined with govt/utility credits.