How far out do you calculate ROI?

[SteveinMN]

Reviews I've read on Amazon of CFL bulbs indicate that their vaunted long life is often not true. Reviews indicated they last longest in plain fixtures where they will be on for a long time. They don't seem to last well where there is vibration, like a garage door or ceiling fan and they don't do well in recessed fixtures or things on a dimmer, even if you don't use the dimmer feature.

You meant LED bulbs?

Actually, I believe those locations don't work for either type of bulb, which is a huge limiting factor to many. Of the twelve lamps in our house that still have incandescent bulbs, nine of them have the bulbs fully- or mostly-enclosed and four of them are "upside down" (some are both). Having to replace a fixture as well as a bulb (or two or eight) doesn’t strike me as a reasonable approach. Especially when some of these lamps are used only rarely (and wouldn't be used significantly more if they were outfitted with LEDs). Maybe I need to start stockpiling incandescent bulbs for the most finicky fixtures.

[reader99]

I did mean CFL, I didn't look to see if the same things apply to LED.