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But you're using huge amounts more energy, I think that would rest on my conscience a little more.

Not if you have electric (temperature controlled) heating.

Can you not still buy halogens? I like the light they give out and while they are nowhere near the efficiency of an LED bulb, they last pretty long by incandescent standards and they are somewhat more efficient than the old argon bulbs.

The guy in the other comment apparently paid led .17$ and they are all still good after 3 years.. What is the percentage of survival of the incandescent light and how much electricity are you wasting until they die?