ShepherdsDog ShepherdsDog:
DrCaleb DrCaleb:
ShepherdsDog ShepherdsDog:
in a cold climate are they really that energy inefficient, seeing as they heat the room too?
Yup. Thermodynamics, not just a good idea, it's the Law! Energy that could be light is instead transmitted as heat. Inefficient. Notice that the really efficient quartz heaters emit no light?

A good light should emit no heat.
but by doing both, giving off heat and light, are they really saving us any money, or are the savings so infinitesimal as to be nil? Extra heat sources are appreciated right now
If I remember my thermodymanics, it would be more efficient to use a good LED for light and a good Quartz or gas heater for heat. You could use less power in each, and get better results that one bulb.
But if it's all you have . . it's better than nothing. I recall my computer gives off a fair bit of heat too. Not so much light.
