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CFL's and LED's Posted by Snowmobile [Email]  (#686)  [Profile/Gallery]
(more from Snowmobile) on Tue, 7 Jan 2014 07:26:56
In Reply to: Re: Wow, that's news to me!, Steve T, Tue, 7 Jan 2014 06:33:50 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I just bought my first LED incandescent bulb replacements. CREE was the brand, and they are 60W and 40W equivalents. I have no idea how long they will last - hopefully a long time because they cost about $10/ea... however imho, they are 100% equivalent to incandescents in functionality and my wife and her mom (both picky about lighting quality, despise all CFLs) agree. CFL bulbs will disappear from the market soon enough.
The main problems with CFLs are poor colour, long turn on time (initial, and to achieve full brightness), non-functionality in cold temperatures, poor longevity, and worst of all: failure mode. CFLs are effectively designed to fail by overheating (in the worst case charring, and possibly igniting). No electrical products (except a fuse I guess) should have a normal failure mode where they might catch fire. It would be considered a massive engineering failure, and no ee should allow that to happen! Fortunately they normally just brown a little and then stop working unless something really goes wrong... eg they are too well insulated by the light fixture... which is really common! This would likely explain Steve T's 2 year life spans (but even so, I'm getting at best 3-4 years for regularly used bulbs, even unenclosed - never 7 afaik)... CFL's must only be installed in upward facing or vented light fixtures. Downward facing or enclosed, non-vented fixtures trap the heat emitted, which raises the operating environment temperature for the (cheap!!) electronics inside, de-rating their lifetimes...
I'm done with CFLs... Once the ones I have fail, they are gone. I'm mostly done with incandescents also, because it really is a big power saving and these CREE bulbs really work just as well! Longevity (eg in enclosed spaces) and cold weather performance are the 2 things I have not yet been able to evaluate.
->Posting last edited on Tue, 7 Jan 2014 07:29:24.
, Mon, 6 Jan 2014 15:22:43
, Tue, 7 Jan 2014 14:59:01, Tue, 7 Jan 2014 15:21:13, Wed, 8 Jan 2014 06:05:56, Wed, 8 Jan 2014 07:11:12, Tue, 7 Jan 2014 10:30:23, Tue, 7 Jan 2014 03:04:04, Tue, 7 Jan 2014 17:13:36, Tue, 7 Jan 2014 06:04:54, Tue, 7 Jan 2014 17:15:54, Tue, 7 Jan 2014 07:26:56 <-- Viewing This Message, Mon, 6 Jan 2014 18:26:41
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