Tue, 19 Dec 2023 06:02:33 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=245744#Comment_245744 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=245744#Comment_245744 Sat, 13 Aug 2016 09:18:09 +0100 malakoffee
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.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=245745#Comment_245745 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=245745#Comment_245745 Sat, 13 Aug 2016 12:34:41 +0100 atomicbisf
Ed]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=245752#Comment_245752 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=245752#Comment_245752 Sat, 13 Aug 2016 22:20:59 +0100 EasyBuilder http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=246071#Comment_246071 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=246071#Comment_246071 Sun, 21 Aug 2016 16:49:09 +0100 numenius 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 ]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251549#Comment_251549 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251549#Comment_251549 Thu, 08 Dec 2016 17:42:42 +0000 SteveZ
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.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251559#Comment_251559 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251559#Comment_251559 Fri, 09 Dec 2016 08:22:36 +0000 daiking 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.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251561#Comment_251561 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251561#Comment_251561 Fri, 09 Dec 2016 09:13:26 +0000 SteamyTea Be careful as they seem to have different wattages.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251562#Comment_251562 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=13017&Focus=251562#Comment_251562 Fri, 09 Dec 2016 09:37:28 +0000 torrent99 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...]]>