Re: Hi, interesting discussion.

I think what Shawn meant (Shawn, please chime in) is that CFL are most effective if used in areas where the light will be on one hour or longer not that they should not be used in areas where the light will be used for less than one hour.

Good question about halogen bulbs. I know that halogens burn extremely hot so I find it hard to believe that they would be a high-efficiency bulb as compared with standard bulbs, but actually they are more efficient than standard bulbs although considerably less efficient than CFL, especially due to the fact that several halogen bulbs are typically used, such as in the kitchen on gas range hoods, etc.

- Joseph