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: 131

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

Forum Discussions

What made this chimney fall down?

Started by Eric Kjelshus in General Forum. Last reply by Eric Kjelshus on Tuesday. 7 Replies

How would you insulate this roof?

Started by David Butler in General Forum. Last reply by Dave Taylor Nov 11. 61 Replies

Manual J (SD) for custom, luxury homes

Started by Dav Camras in HVAC. Last reply by Dav Camras Nov 10. 3 Replies

Quantitative methods for residential zoning

Started by Brett in HVAC. Last reply by David Butler Nov 9. 1 Reply

Home Energy Pros and #MeToo

Started by Mike Rogers in General Forum. Last reply by Mike Rogers Nov 9. 3 Replies

Latest Activity

Don Fugler added a discussion to the group HVAC
Thumbnail

joining ducts

A question came up on exhaust duct connections. I have always considered screws necessary for…See More
7 minutes ago
Don Fugler joined Allison A. Bailes III's group
Thumbnail

HVAC

HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements,…See More
15 minutes ago
Profile IconSonny Roncancio and Chester Energy & Policy joined Home Energy Pros Forum
20 hours ago
Ryan Moore updated an event
Thumbnail

LEED for Homes Green Rater Training at Fort Collins, CO

December 7, 2017 to December 8, 2017
Green Insight will host this 2-day training in Fort Collins, CO December 7-8,…See More
yesterday
Rodney Bailey liked Rodney Bailey's discussion Energy audit equipment for sale.
yesterday
tedkidd liked Mike Rogers's blog post Focusing on payback to motivate customers?
Thursday
Home Energy Magazine's blog post was featured
Wednesday
Home Energy Magazine posted a blog post
Wednesday

Photos

  • Add Photos
  • View All

© 2017   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service