Although compact fluorescent lamps have fallen out of favor, I’m burning through a box of the things donated by a friend who upgraded to LEDs and figured I could put them to good use. In general, complex electronic doodads (like CFL or even LED lamps) used in hostile situations (like an ordinary downlight fixture) seem to fail too quickly to justify the power savings; searching for “cfl fail” will produce some evidence from around here.
One of the downlights in the Basement Office just killed this specimen:
Much to my surprise, however, it survived for more than five years:
The previous CFL bulb in that fixture lasted only two years, so their average lifetime is entirely too short.
A taller bulb does a better job of lighting up that corner, although it started with enough power-on hours to suggest it won’t survive for another five years:
The ghostly humps above the overexposed glare are the long CFL tubes reflected inside the Pixel’s camera optics.
I didn’t see much point in nailing a ceiling to too-low floor joists.