There is an LED design that has the LEDS embedded in a very small rod that
is covered by some kind of phosphor. They look like long incandescent
filaments. The lumens per watt is the same as a regular LED and the price
is about the same.
https://en.wikipedia.org/wiki/LED_filament
They have the best color temperature for warming up the room. Very very
similar to tungsten. Nice in places where you don't want extremely bright
bulbs and you want the slightly yellow of tungsten.
-----Original Message-----
From: Bill Prince
Sent: Saturday, May 27, 2017 9:38 AM
To: [email protected]
Subject: Re: [AFMUG] OT: LED Lifespan
We've been replacing incandescent and CFL lights as they fail. We found
that CFLs don't like being turned off/on a lot; it seems to increase
their failure rate. We've been doing this for about 4 years, and so far,
we have had zero LED failures. We like the LEDs because the color is
more natural than any of the CFLs. I don't know how many LED lights we
have, but well over half of our total lights are LED now.
Last year we replaced the recessed fluorescent lights (4 X 40W = 160W
total) in our kitchen with 9 "Halo" LED lights (9 X 8W = 72W total).
The LEDs produce far more light, and they are dimmable. In the evening
when we're not working in the kitchen, the lights are turned down to
maybe 25% of normal. In terms of energy usage we have to be less than
25% of what we used before, and the quality of the light is just many,
many times better.
bp
<part15sbs{at}gmail{dot}com>
On 5/27/2017 7:53 AM, Nate Burke wrote:
I've converted some things to A type LED Bulbs at my house, mainly for the
reduced heat output, but I'm not seeing anywhere near the lifespan
advertised. I would say ~50% failure rate within 2 years. I'm betting the
actual LED's are fine, but the driver burns out. Is this common with
LED's or am I just really unlucky? We installed a bunch of 4' LED Shop
lights, granted they were all the same manufacturer, but we have about 75%
failed within 8 months.
