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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
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General: Replacement LED Bulbs

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    Looking for an up to date recommended supplier/source for LED's

    Need to replace 18no 25w e14 candle bulbs, ideally with led filament style.

    I need 2700k, as high CRI as possible and without breaking the bank.

    Any thoughts? Slowly working my way round the house

    Thanks
    • CommentAuthorsam_cat
    • CommentTimeJan 26th 2018
     
  3.  
    Screwfix had some on clearance today, I bought a 25w b22 golf ball for 49p.


    Has anyone tried the WiFi controlled lamps where you voice control them to change the colour temperature, or program them to be daylight in the day then warm white in the evening, or dim them whenever your phone leaves the room, etc etc? Phillips Hue white Ambience and similar.

    Price is falling fast £20-30ish but will still be a year or two before they are cheap enough to swap them into my fittings I think.

    Edit: like this one, adjusts from 2200 to 5000K. https://www.amazon.co.uk/gp/aw/d/B075FS9LR2
    • CommentAuthorsam_cat
    • CommentTimeJan 29th 2018
     
    Have tried Hue, its nice but zero point in the colour bulbs imho.. 99% of the time you simply want a variable white (temp and brightness is variable). Only exception IMO is on the landing, at night dimmest red is great for the kids.. they can get to the bathroom without putting a full bright light on.

    Vary the light temperature by time of day - so morning through to 7pm ish the light is cool white, after that it gradually transitions (over hours) to a much warmer white (2k).

    BUT the bulbs are still £20, compared to screwfix £2 bulbs....
    • CommentAuthorMackers
    • CommentTimeJan 30th 2018
     
    Check out Casambi Bluetooth lighting controls
  6.  
    I've had excellent results so far from the LED filament lamps from Homebase made by TCP. There are dimmable and non-dimmable options. The 2W lamps are rated at 250 lumen and so are a good replacement for 25W incandescent.
    • CommentAuthorborpin
    • CommentTimeFeb 1st 2018
     
    Posted By: VictorianecoNeed to replace 18no 25w e14 candle bulbs, ideally with led filament style.
    Buy more than you need. You are bound to get at least one failure and trying to match LED bulbs is nigh on impossible.
  8.  
    What to do with the old halogen bulbs? just bin them?
    •  
      CommentAuthordjh
    • CommentTimeMar 27th 2018
     
    Posted By: VictorianecoWhat to do with the old halogen bulbs? just bin them?

    No, take them to your local recycling centre.
  10.  
    >>What to do with the old halogen bulbs? just bin them?

    Give them away on eBay?
  11.  
    4 years on, all of these bulbs have failed

    So what's a next good recommendation of bulb that will live up to its claims
    • CommentAuthordb8000
    • CommentTimeOct 23rd 2022
     
    I’ve generally been disappointed by the quality of LED bulbs. Many failing or buzzing.
    Those from Crompton have been best of the lot.. Hard to get hold of sometimes.
    •  
      CommentAuthordjh
    • CommentTimeOct 24th 2022 edited
     
    Posted By: Victorianeco4 years on, all of these bulbs have failed
    Sorry, what bulbs? The old halogen ones or some new LED ones that you haven't told us about.

    As db8000 says, Crompton are very good. I have 50 of their GU10 and a few general service GLS lamps that I fitted over seven years ago. Not one has failed yet. :bigsmile: Contact Crompton and they will recommend where to buy whatever you want. I bought a few more recently just to have some spares ready.
  14.  
    Sorry, I should have said. These were Screwfix bulbs. LAP I think
    • CommentAuthorGarethC
    • CommentTimeOct 24th 2022
     
    Slight tangent, but this was posted on the Camelot forum and I thought interesting. Sounds like modern LED bulbs a lot more efficient than old, but some of the most efficient you can't buy in the UK (well, at least the example in the video).

    https://youtu.be/klaJqofCsu4
    •  
      CommentAuthordjh
    • CommentTimeOct 24th 2022 edited
     
    Posted By: GarethCSlight tangent, but this was posted on the Camelot forum and I thought interesting. Sounds like modern LED bulbs a lot more efficient than old, but some of the most efficient you can't buy in the UK (well, at least the example in the video)
    Interesting thanks. I haven't watched the video (30 minutes about a light bulb?) The source of data is probably https://www.mea.lighting.philips.com/consumer/dubai-lamp perhaps among others. It includes a link to the data sheet https://www.assets.signify.com/is/content/PhilipsConsumer/PDFDownloads/Saudi%5FArabia/ODLI20160920%5F001%2DUPD%2Den%5FSA%2DPhilips%2DDubai%2DLamp.pdf
    The datasheet clarifies that 'cool daylight' is what we call in this country 'daylight'. 'cool white' is bizarrely a somewhat warmer temperature. I never much liked Philips marketing policies - you can't (or couldn't last time I looked - I just checked, you still can't) buy daylight lamps in this country, although they are available in other places in Europe. And I'm not terribly impressed by the Sheik's apparent morals as appear in the press occasionally. But if the development reduces the watts devoted to lighting in Dubai then that's a good start at least.

    Oh and just to add to my previous post, I selected the Cromptons by comparing the light quality and distribution of all the brands I could find at the time, and they seemed to have the most even spread of light. Some were awful :(
    • CommentAuthorwookey
    • CommentTimeNov 1st 2022
     
    Mains LED 'bulbs' are just a bad design. Expedient in retrofit but prone to failure and more expensive to implement than having one driver shared between each 'switching unit' (one room, or half a big room).

    So if you possibly can get rid of the 'mains to every fitting' approach and just have mains to the driver, then LV round the LED fittings.

    I get mine from ledkia since about 2016 and have used a lot of these:
    https://www.ledkia.com/uk/79-buy-basic-ultraslim-led-downlights
    but there are now quite a lot of other suppliers.

    They are not perfect (medium efficiency, cheap and nasty drivers which are best replaced) but they are very cheap, look very neat, give good even light, have a range of colour temps. Can be strung in series or in parallel (best in series).

    I wish I could find somewhere that sold them bare without the €1 shitty CC driver, which (on the 6W lamps) appears to have a 0.7W standby current (not sure if that is an impedance artifact or if it really is wasting power when off).
    •  
      CommentAuthordjh
    • CommentTimeNov 2nd 2022
     
    Posted By: wookeymedium efficiency, cheap and nasty drivers which are best replaced
    Just for interest, where do you buy the replacement drivers?

    I agree in principle about LED lamps, but I haven't had any failures yet - good quality of lamps with metal body, open, unenclosed design of luminaires I think may be reasons why so I'm not about to completely rewire the house. But at some point I'll most likely replace the fluorescents in the kitchen.
  19.  
    My experience with LED "mains" bulbs (in my case, particularly GU10 ones) has been pretty poor.

    Failures within 3-4 years seem standard.

    The better performing ones haven't always been from the "well known name" manufacturers.

    Very difficult to make a judgement about what will or won't prove to be a good buy. Might last 10 years, might last 2 years - who knows!
    • CommentAuthorborpin
    • CommentTimeNov 4th 2022
     
    Remember to buy spare bulbs especially if in the ceiling. If one goes, trying to get a match is nigh on impossible!
    •  
      CommentAuthordjh
    • CommentTimeNov 4th 2022 edited
     
    Posted By: borpinIf one goes, trying to get a match is nigh on impossible!
    In general I agree, but I was very pleasantly surprised when I bought some more recently exactly the same, over seven years later.

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