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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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    • CommentAuthormalakoffee
    • CommentTimeAug 13th 2016
     
    Around about autumn 2015 I did a bit of informal internet research into LED bulbs, which turned up a number of warnings about the performance & durability of the non-branded LED bulbs.

    Against my normal "value-orientated" instincts I bought three Philips LED std-bayonet-fitting bulbs, from John Lewis, at around £13 each :
    13.5 Watt : 1500 lumens : 2700K

    I like them.
    One year later, John Lewis are now selling them for £8 each.
    • CommentAuthoratomicbisf
    • CommentTimeAug 13th 2016
     
    I bought some of the filament style bayonet fitting ones in a clear candle style from Toolstation. Work very well.

    Ed
  1.  
    Thanks for that link Sprocket, just what I needed to understand these new products.
    •  
      CommentAuthornumenius
    • CommentTimeAug 21st 2016 edited
     
    Just like an earlier poster on here, I've tried several LED bulbs from China via Fleabay but they have failed within a few months. In a couple the capacitor loudly blew (so I replaced them) but others I could not determine the reason, otherwise I'd have tried to fix them as it's very unlikely to be the LED themselves. Now I've bought loads of electronic bits and bobs from china and actually have had very few issues and saved many hundreds of £s over the years, but LED bulbs are really a gamble for some reason (yet LED panels and the like tend to be OK but really RF noisy).
    Similarly, LED floodlights from Chinese sellers rated at say 10w are often much less if you put a meter across them. I don't know why as the components are literally pennies over there so it's a shame. I have however, used the enclosures (still dirt cheap at the price) and upgraded the internals.
    There are some good ones coming out of china, but it's a real gamble (and yet no doubt in reality, the big name branded ones are likely manufactured there also, but to a standard), and I too found the stuff from LEDhut to be fine. Tried to buy some from Homebase online but they couldn't get bayonet right and first sent me Edison screw, then took them back, made me wait until they'd checked they were OK, them replaced them with.... more in Edison screw! I even sent them a "handy cut out and keep guide to the difference between ES and bayonet" but I don't think they appreciated my humour :bigsmile:
    • CommentAuthorSteveZ
    • CommentTimeDec 8th 2016
     
    Try Screwfix!

    I have just replaced 5 tungsten or CFL lamps with a version of a bayonet fitting LED lamp on offer from Screwfix. I have used them as both main room lights and in a couple of table lamps. They are 9W (60W equivalent) 2700K and so far, seem wonderful. Bright, instant light and around £8 for 5 off. item code 2330J

    I also bought a few LED candle SES bulbs to try as replacements for our usual CFLs in a chandelier type fitting. Again, they are really good, 5.9W 2700k (40W equivalent), and again cheap at £4 for 3. item code 8782P

    No idea on life yet, obviously, but they are looking good. The soft light is very impressive as the previous LED lamps I have tried were a bit harsh, leaning towards daylight. Fine for some rooms, but not very relaxing.
    • CommentAuthordaiking
    • CommentTimeDec 9th 2016
     
    Posted By: SteveZTry Screwfix!

    I have just replaced 5 tungsten or CFL lamps with a version of a bayonet fitting LED lamp on offer from Screwfix. I have used them as both main room lights and in a couple of table lamps. They are 9W (60W equivalent) 2700K and so far, seem wonderful. Bright, instant light and around £8 for 5 off. item code 2330J

    I also bought a few LED candle SES bulbs to try as replacements for our usual CFLs in a chandelier type fitting. Again, they are really good, 5.9W 2700k (40W equivalent), and again cheap at £4 for 3. item code 8782P

    No idea on life yet, obviously, but they are looking good. The soft light is very impressive as the previous LED lamps I have tried were a bit harsh, leaning towards daylight. Fine for some rooms, but not very relaxing.


    Are the power ratings for these items correct? The replacement lamps I have (these screwfix items) seem to be far warmer to the touch than an equivalent rated 'low energy' cfl. I suspect I am being conned somewhere but have neither the wherewithal nor the motivation to a) check properly and b) do anything about it.

    Boffin input with The Sun-esque readership level of reply greatly appreciated.
    •  
      CommentAuthorSteamyTea
    • CommentTimeDec 9th 2016
     
    Poudland have some LED bayonet lamps for a £1.
    Be careful as they seem to have different wattages.
    • CommentAuthortorrent99
    • CommentTimeDec 9th 2016 edited
     
    Posted By: daiking

    Are the power ratings for these items correct? The replacement lamps I have (these screwfix items) seem to be far warmer to the touch than an equivalent rated 'low energy' cfl. I suspect I am being conned somewhere but have neither the wherewithal nor the motivation to a) check properly and b) do anything about it.

    Boffin input with The Sun-esque readership level of reply greatly appreciated.


    I suspect that your instincts are on track....! It's likely that the LEDs in the unit are the rating they claim e.g. 5W, but that the little power supply in the back of the bulb is very wasteful. Certainly that's the suspect bit of most of these cheap bulbs longevity-wise.

    However, 5W in such a small space without proper heatsink cooling is likely to get quite hot! If you look at many of the GU10 style bulbs they will have a metal finned heatsink around the LEDs to keep them cool. I suspect that MAY be an indicator of quality when purchasing unknown bulbs...
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