I have 5 halogen lamps in my life. A torchaire in my bedroom, a torchaire in my office, 2 desk lamps--one at work and one at home--and then a torchaire in the utility room in the basement. Halogen bulbs aren't the standard Edison bulb that's pictured when I see something on CFLs, so these have been a question-mark in my head.
The Energy-star site doesn't talk about halogens.
One Billion Bulbs doesn't have anything on halogens.
Mr. Electricity doesn't talk about halogens on his lighting page.
I did a search early this morning on Halogen bulbs and CFLs, and I got a whole bunch of links to places that sell both. Which was mostly worthless for my question, except for this page. And since that's a page that's dedicated to selling a product, I have to discount the info on it. But which info?
This target on Wikipedia's page on incandescents provided some guidance.
- Halogens are more efficient than incandescents, at 9% of energy converted to light.
I also found this formula on the Mr. Electricity page:
So I can figure that the halogen costs:
Verses the 27 watt CFL in the wall sconce:
Over on the OneBillionBulbs site, I pretended I changed three 100 watt bulbs for three 28 watt bulbs and estimated I was using them for 2 hrs a day. Results:
Okay. So my answer is: whatever the specific numbers, the halogens need to go. Or be used a whole lot less.