Thanks!

Philips EL/A R30 DIM16W
Philips EL/A R40 DIM20W
Feit BPESL23T/DIM (23W)
Feit BPESL15T/DIM(15W)
Ecosmart ES5M10123 (23W) or Technical Consumer Products Model 10123
Ecosmart ES5R315DIM (15W) or Technical Consumer Products Model 2R3015DIM

In CA for example, title 24 compliance is necessary.

Replacing the ballast on a cfl can will require access to the upper side of the can.

I had considered LEDs for the recessed cans, but was under the impression that the LEDs were more directional than the fluorescents, so the LEDs might not make as good sources for ambient room lights. Has that problem been taken care of?

My only gripe with LED lights is that the initial cost is high, although the LR 6 is cost competitive with title 24 CFL recessed lighting - ballast integral to can, non edison base lamp.

The CR6 will be cheaper.

David

The unfortunate thing is that there is extreme pricing pressure on CFLs such that most people end up regretting their purchase.
Some common complaints
1. Insufficient light output from the start.
2. Light output declines significantly within a couple of months.
3. Bulb dies within a couple of months.
4. Bulb takes time to warm up.

The 4th is an expected characteristic as fluorescent lights are discharge lamps and require some time to warm up unlike incandescents and LEDs.

Common complaints about LEDs
1. Too expensive - Still largely true in the year 2010, but not necessarily the case.
2. Not enough light.
3. Heat - early generation LEDs are relatively inefficient and heat dissipation issues. Side note - LED modules with an output of 206 lumens per watt have been demonstrated (2009 - 2010).
4. Too directional - also true for cheap early generation LEDs that one can still find for decorative purposes.

Title 24
The aim is to improve energy efficiency through legislation. One notable item is that the GU24 base is intended to displace edison/ screw in base.
The GU24 socket and base system is designed to replace the Edison socket and base in energy efficient lighting fixtures. The ENERGY STAR® Program Requirements for Residential Lighting Fixtures, Version 4.0 require that residential lighting fixtures cannot use the standard Edison screw base, even if they do not have a built-in ballast. The same requirement is included in California's Energy Efficiency Standards for Residential and Nonresidential Buildings, known as Title 24-2005.

For more info
http://www.cflfacts.com/

Thanks for all the info davidray!

I agree with the first part of your sentence; intense competition has driven the prices down to where the quality is often poor, at least among the mass-market retrofit (Edison base) CFs.

However, I'd like to know what your data source is for contending that "most people end up regretting their purchase." I haven't seen surveys that indicate this. Perhaps you have, and can cite them?

The answer to the first part of your statement is to choose carefully, and NOT primarily on price. You will have to pass over quite a few cheapies; you don't get a good retrofit for $1.50 or $2.00.

I've had good results from Philips brand retrofits. Expect to pay $8-20 each, depending on style.

I'm the only one in my social circle with an extensive cfl and LED deployment . Obviously that may not be a satisfactorily large sample size to be significant.

I personally have used cfl lights from a number of vendors and the only ones that have been satisfactory are Philips and Panasonic.

I suspect there are some psychographic issues at play here. I'm not suggesting anything about your social circle, but the folks I hang with seem to be less fussy about lighting style and more fussy about energy use (and saving money). Most of them are gradually replacing incandescent lamps with CFs as the incandescents fail. So far I haven't heard anything that indicates they regret buying CFs.

I haven't used Panasonic CFs. I'd gladly try them if I could find any offered for sale anywhere.

Philps have been great. These days I mostly use the SLS-20 and SLS-25 triple-U lamp retrofits. As the old saying goes, the plural of anecdote is not data, but it's still worth mentioning that I installed the first one about 8-9 years ago, and it's going strong as I type this. I'd guess that it has over 20,000 hours on it by now.