On Sun, 9 Aug 2009 07:23:35 +0000 (UTC), (Don
Klipstein) wrote:

In article ,
wrote:

SNIP what would otherwise be resaid more than once, as I edit for space

In a perfect world -----
I have had TERRIBLE luck with Sylvania CF PAR bulbs. 3 two-packs now
that one bulb in each was dead within 30 seconds - have not had one
last 2 years yet. Several have failed within 4 months.

Can you tell us model numbers / part numbers and nominal wattages that
have been so unlucky, as well as good description of what kind of fixtures
these fared so poorly in?

Please tell the world every possible detail of any CFL that has had 3
out of 6 croaking within half a minute. I have not even found the stool
specimens from dollar stores to be *that bad*.

Sylvania 15 watt Osram/Sylvania reflector (par) bulbs in recessed
non-insulated ceiling (pot light) fixtures.
number on the bulb says cf15elbr30frost

The old incandescents lasted over 4 years. I just replaced one for the
second time in TWENTY EIGHT YEARS - and it is used daily - usually for
more than 3 hours a day.

Please tell us manufacturer, model #, part #, and every other relevant
description/info of incandescents having such duration.

The inccandescents were, IIRC, 60 watt PAR32. in the same fixtures.
Just replaced the last one, installed in1998, over a week ago (and
replaced it wirh the Sylvania that lasted 30 seconds). I also have
some Philips Marathon 15 watt PAR32 CFL bulbs in service - less than
2 years yet, but still working

I also note that it is easy to get incandescents to have such good
duration - as long as they have energy efficiency decreased by something
like 40% in comparison to that of "standard incandescents".

Please keep in mind the cost breakdown of incandescent lighting -
normally very little is from purchasing bulbs; incandescent lighting cost
is very heavily electricity cost. 2nd place cost of incandescent lighting
is arguably cost of air conditioning to pump the lighting's heat outdoors,
even where air conditioning sees much use only 4 months per year.

- Don Klipstein )


Tody is the second day we've had the AC on here in Central Ontario
this year. Most summers are MUCH hotter and more humid.