I never had anything good to say about crappy LED Retrofits....

Here is why-- I can speak about 3 instances where manufacturers of LED retrofits

have had  faulty stuff recalled - the latest Lighting Science groups  offerings- the Ecosmart LED

cheapies sold at Home depot - have/ ( continue to) smoke, overheat, ignite on some occasions

Bad for owners- SSL quality zealots have to restrain themselves from saying - SEE I TOLD YA

 

 I have been railing against these cheap products  with their inferior components for

5 years + now - I am aware of the negative damage done by crap products  - I go out

of my way to qualify my LED advocacy with cautions of BUY ONLY SSL with good quality

standards- regardless things like this will continue the SSL business as it find its legs.

 

 Sad but true - It SSL ( buyers remorse) would happen less with more pre purchase scrutiny

that comes from asking key questions- Which chip is in 'em whats the E caps  MTBF

or asking questions about validating sprectral output claims - if those questions can't be

answered adequetely I'd shop elseware-

 

Better - skip LEDs using 120 VaC mains-I favor using LEDs on a Power over the

ethernet+ although standard (common LED lights) will be good-

I really want  to skip ahead to the "good stuff" the 2020 era

OLETs using POE -that would really be A-Ok.

 

 Until the constructs are changed folks are going to need to be discriminating buyers

hopefully going in with open eyes, using unbaised performance data and knowing that some

of the crappiest LEDs are typically the ones at chest level at big box purveyors.

 

Views: 88

Reply to This

Replies to This Discussion

Perhaps some day I should post my pictures of a garbage can full of CFL's.  Both CFL's and LED's have electrolytic caps in them... and the lowest cost items are a problem.  But for CFL's you normally don't see the power supplies in them fail --- only because the mercury in the bulb is depleted first.   But the CFL electronics do fail -- I have some dead CFL's I collected for show and tell.

More common problem on the LED's is that the power supplies just fail and they stop working.  I have a small collection of those.

It is probably also worth noting that for both devices - the claims of long life... is a little bit of a stretch.  You've got to read the labels AND what a lifetime is defined as.

Most bulbs are spec'ed at about 3.5 hours day.  One turn on, one turn off.  For CFL's  the turn off light as you leave the room can shorten its life by 20% or more.   LED's generally don't see the same on/off impact.  HOWEVER,  some do experience a droop somewhat like CFL's.  AND even though much of the marketing claims say 20,000 hour life - that really means the bulbs half life is 20,000 hours.  (Worst simplistic case it means half the bulbs fail almost immediately and the other half make it the full 20,000 hours.)

I also have some scary incandescent lighbulbs.  Like the ones that overheat --- resulting in a bonding failure between the glass and the base.  So when you unscrew the light the base is still in the socket.

The early generation of LED's certainly didn't hold up to my expectations.  The newer generations of bulbs are getting pretty good.  BUT the ROI for a bulb switch is still marginal.  It only works if you use dimmers (they kill the CFL's), you are trying to avoid mercury,  you don't want the heat the CFL's produce,  and you still are willing to be an early adopter.

OLET's using POE will not be very energy efficient.  Too much loss in power between the supply and the light.  Wire size is simply too small.  You can calculate out the loss -- it is much higher than you might expect.   Plus the ethernet power sources are generally not optimized for lighting use.

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Hal Skinner commented on Hal Skinner's group The RCC Classroom (Radiant Control Coatings)
"That same RCC, used as paint on the ceiling of living space, will do the same as if it was applied…"
19 minutes ago
John Nicholas commented on Michael Stuart's group INFRARED THERMOGRAPHY USERS
"Don,  You are incorrect!  This is *NOT* the only course available that meets the ASNT…"
30 minutes ago
Craig Bird commented on Hal Skinner's group The RCC Classroom (Radiant Control Coatings)
"Correct, that is exactly what I said"
1 hour ago
Hal Skinner commented on Hal Skinner's group The RCC Classroom (Radiant Control Coatings)
"At 1.7% enterng the structure, that Radiant barrier is now going to allow the R-rated insulation/s…"
1 hour ago
Craig Bird commented on Hal Skinner's group The RCC Classroom (Radiant Control Coatings)
"And how much of that 1.7% of the suns energy that got through the RB or RCC gets into the house,…"
1 hour ago
Hal Skinner commented on Hal Skinner's group The RCC Classroom (Radiant Control Coatings)
"OK.  This might be rudamentary here.  I want to make sure everyone understands how SOLAR…"
2 hours ago
Craig Bird commented on Hal Skinner's group The RCC Classroom (Radiant Control Coatings)
"Hal - I would disagree that radiant heat "goes through" fibrous insulation. Radiant heat…"
2 hours ago
Hal Skinner commented on Hal Skinner's group The RCC Classroom (Radiant Control Coatings)
"Hi KLurt. I would isagree with the comment that the attic floor is heated by the…"
2 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service