There seems to be quite a lot of confusion here about efficiency/ratings. A little research shows that light bulbs are currently rated under EU Commission Delegated Regulation No 874/2012 (12 July 2012) (!), with ratings given for the power used by a bulb to provide a comparable light output relative to a standard incandescent bulb.

The bulb is A rated if it uses <24% of the power,
A+ rated if it uses <17% of the power,
and A++ rated if it uses <11% of the power.
There is currently no category above A++.

These Screwfix bulbs produce a luminous flux which is at least as good as a 60W bulb, and consume 9W. 9 is 15% of 60, so the bulbs are rated A+. Simples. (And they are hardly borderline in being rated that).

If, as many of us subjectively speculate, these bulbs are actually equivalent to 75W, then their relative consumption is actually 12%, which would make them borderline A++.

Note also that these bulbs have a diffuser - i.e. the coating on the globe which spreads the light out so that the bulb looks more like a regular bulb (and so you don't get the highly directional point sources that a LED produces). That hits the overall efficiency slightly.

Also cool white same price
http://www.screwfix.com/p/lap-gls-led-lamps-white-bc-9w-5-pack/8621j

A reasonably good 60W tungsten filament bulb apparently gives about 750 lumens. As I said in the deal description these are specified as 804 lumens, so on paper probably a little better than a 60W bulb. But as I also said, I suspect the colour temperature is probably also a tad hotter than an incandescent and I'd wager that subjectively most people would find them noticeably brighter than 60W. Wet finger in the air I'd say these are about 75W equivalent, but others might judge them differently. Almost all the BRANDED LED bulbs I've looked at need around 9W to generate 800 lumens so I don't think these are any less efficient. I'll wager there are a number of LED bulbs which claim a similar output from less power but I wonder if those would actually stand up to scrutiny?

EDIT: The one thing I'd add to the above is that there is an angular component to the measurement of luminous flux. These LED bulbs have a stated beam angle of 200 degrees, so the light they produce is far more concentrated in the hemisphere above the plane of the bulb than below (with the bulb upright like in the picture). An incandescent bulb with a similar lumen rating but with a beam angle approaching 360 degrees will have less light in the same hemisphere. The result is that these LED bulbs may *seem* brighter than a similarly specified incandescent depending on their orientation. That said, I am using these bulbs both upright in lamp stands and hanging in pendants and haven't yet found a situation where they seem poorer than a 60W incandescent, but that may not be true for all applications.

​I've returned three sets (12 bulbs each time) for complete failure :/

Not good. I've never had a mail order delivery from Screwfix as even in back of beyond N Wales I'm lucky enough to have a branch nearby. Even then you have to be a little careful as they seem quite happy selling items which have been previously opened (and presumably rejected). I've never had a problem getting exchanges but it's annoying that they try it on a bit like this. Hope all your bulbs work and you are pleased with the result.

Got delivery from Screwfix this afternoon - you would think a company like Screwfix would be experts at packaging things but it was simply 2 boxes of bulbs placed in a box, no bubble-wrap or padding whatsoever.

Luckily it seems that all bulbs are intact though ...

this 9w is already a true replacement for a 100watts or lets say 90w at worse. Also the higher wattages or lumens are not yet as efficient, on the top of that they are a lot more expensive at the moment

Thanks. I will try with these drivers and local bulbs from screwfix.

Those drivers should work with anything up to 15W. I haven't used many MR16s but would think that you probably only need good 5W LEDs to get the same light as 50W halogen? That would depend somewhat on which colour temperature and beam angles you went with. I have a big bathroom and 3x 4000K 5W LEDs make the whole room very bright. The ProElec bulbs at CPC seem well regarded as do most of the bulbs at Screwfix. If you think you might need to do some tuning (power, temp or beam angle) and have a local Screwfix that may be the best bet as you could exchange things. (I only did all of mine through CPC as I couldn't find any drivers I liked at Screwfix, but I also already had some experience putting high temp LEDs into my kitchen so felt reasonably comfortable getting the power/beam angle/temp tradeoff right first time).

Just picked up mine today (warm white) and really happy with them, replaced a bunch of 20W CFLs and a 60W incandescent and much brighter and a nicer colour than what they replaced. Just ordered another set to pick up tomorrow.

​Thanks for the info, I purchased these MR16 cool white ones 3 for £10. Any suggestions if 8W would work on these drivers and what other 50W equivalent in MR16 would you recommend?

Very happy with the warm white light. I got rid of the cool white I was using in my office at home, which was causing me headache, and unable to fully concentrate :wink:

these go bright instantly

Ive just sent my wife to screwfit lol

Thanks. Amazon have 13w in B22 with 1521 lumens - so I've ordered a couple of those. Happy to pay a premium price if they're good bulbs - it's not really much money over the lifetime of the bulbs (assuming they last anywhere near their target life).

<3 Wives do hate new tech bulbs. I got a load of flak over the no instant on of the first generation low energies. <3

correct, happy to see that someone agree. Can also be subjective (to a small extent) because of the way our eye does interpret the colour spectrum but if your halogen were old then they would certainly loose some of the brightness, hence the extra brightness you get with the led. Led, hopefully should keep the same brightness for the duration of his life.

How did you write what I just said 22 hours before I said it? :smiley:

Nice deal but I use 1450 lumen CFLs. I like actually being able to see stuff! They use 23 W though...even LED equivalents would probably be 15 W or higher.

The 12V drivers which support high wattage halogens often do not like the lower power load of a LED bulb. :disappointed:

I recently upgraded my bathroom halogens to LED when two lights (drivers) failed. I went with Pro Elec 15W drivers and 5W bulbs and I'm very happy with the result (I bought the higher capacity drivers in case I needed to change to brighter bulbs). The drivers seemed quite good value at <£4 each (I bought 4). I had previously substituted high efficiency halogens for the original 60W halogens, but can't remember exactly what rating they were (maybe 35W?) The LEDs are 4000K, so quite a pure white which works really well in a bathroom, and they seem much brighter than the older halogens.

The drivers I used can be found here. They are nice and compact so they fit easily through downlighter holes.

Yep, I wouldn't go back. I changed over 15 50w bulbs to 5w. At 9p/unit, and roughly 2 hours a day that's a £45 a year saving.

When we switched our eight dimmable halogens for eight dimmable LEDs, we had to change the dimmer switch. This was all down to the wattage across the circuit; the eight LEDs added up to 40w total, which was too low a threshold for the old dimmer to work. (8x40w = 320w for halogens vs 8x5w = 40w for LEDs)
Easy enough to change over, and now we're using an eighth of the electric for our lighting.

anyone look candle shape ones - http://www.screwfix.com/p/led-candle-lamp-white-ses-4-7w-3-pack/8782p £3.99 for 3 40w eq.

Great price, I'd definitely recommend them having used them for while now. Nice info OP.

The 'Pro-Elec' bulbs sold by CPC-Farnell are pretty good. Around £2.50 for a 12W bulb I think. I have one in the living room which gives out a good quality of light, and again has lasted over a year so far.

and cant really complain if they werent for a 90% saving on electricity (10p instead of a quid)

I wouldn't return a single bulb, although if I'd paid a tenner for five and they all failed within a month I think I'd be inclined to return them if I was passing that way.

No different to returning a toaster that went bang within a month.

That said these bulbs seem pretty reliable, I've had one in the upstairs hallway that gets a lot of use (and switch cycles) and it's still going strong after a year.

great reviews also
http://www.screwfix.com/p/lap-gls-led-lamps-white-bc-9w-5-pack/2330j

I've bought and been happy with the Philips 13.5W warm white LEDs. They're a good match in colour for these LAP bulbs, a fairly yellow light and not the slightly sickly colour some others I've tried have given out. Nice and bright, can light even a fairly large room by themselves, unless you have a very thick shade - a true 100W equivalent. Not cheap though.

We've just replaced the hall/wc/kitchen with 5w GU10 from screwfix to replace 50w halogens. Subjectively, the 5w are noticeably brighter.

Was happy to pay £9.99 6m ago and thaty deal when hot so this is basically 25% better (5 for old price of 4)

For a true replacement, it'd be 1600 lumens on average. In reality, 1400 would probably be a reasonable match. At A+ it'll be around 14 watts.

Can anyone recommend a true 100w equivalent? Probably 12w or 15w, with around 1100 - 1200 lumens?

Need one for the dining room, and the wife threw out the last couple I tried (a while ago) on the grounds that their colour cast made food look weird.

compared in the exactly same situation (members of the family do agree more or less) and even if I am slightly wrong what about my 5w A+ spot lights which are as bright as the 50w halogen one? Anyway what about the rule ( I read it somewhere) were an A+ bulb should always be 10 times more efficient that a filament bulb, it makes sense if works this way which apparently does to me. It cannot be a 60w, the older neon one are 5 times more efficient that the filament bulb and also compared a 20w neon light against this one at 9watts and seems to be about the same.

that must be a good thing then, must be the same reason why my very old vaxhall feel like a lambo to me,lol

Great needed some new one for the kitchen ES/scre fitment are the same price http://www.screwfix.com/p/lap-gls-led-lamps-cool-white-es-9w-5-pack/9600j

Got a house mostly full of these - how bright they seem is more about how bad a "60W" CFL really was. These are great 60W bulbs with a very pleasing light colour, suitable for halls/landings/small to medium rooms (or large rooms if you have a multi-bulb fitting).

We went for cool in the hallway/wc/kitchen and warm for the living room.

These are great, way better than the standard energy efficient ones. Bought 1 to test, then 2 more and did the whole house

Dont go for "cool" unless you want your house to look like a Dentists

Maybe - (a) you are comparing against a poor incandescent bulb, (b) you are more sensitive to the light these produce (which I *suspect* is a tad hotter than an incandescent), or (c) you are using them in an application where the light you see is coming mainly from the top of the bulb?

As I said earlier these bulbs are specified with a 200 degree beam angle, so more of the 800+ lumens they produce comes out above the bulb than below (bulb upright). If you were hanging these under a very light absorbing lamp shade then they would be noticeably brighter below than a 60W incandescent (as a lot of the light an incandescent would produce would be going upwards into the shade and being absorbed). In such a scenario you would probably need a >1000 lumen incandescent to throw the same amount of light downwards.

Simples. It isn't, you're seeing things.

got the coolwhites in Jan 2015 for £9.99, they are going well, good quality, reliable and bright. Ordered 2 more packs for another property. Thanks OP I was going to purchase these last week, saved £2

Good price. Heat. I went for the 60W non-dimmable 2700K Phillips triple pack at Wickes for £9.99. They probably all come out of the same factory!

​I've returned three sets (12 bulbs each time) for complete failure :/

You maybe the only one.

I would hate to be the type of person who would feel the need to return a faulty light bulb to the shop it was bought from ... so it won't be a problem for me.:confused:

Thanks bought 1 pack of each - delivery a bit steep at a fiver but what the hell you only live once ...

Not related to these, yesterday purchased MR16 LED and they flicker after keeping them for few mins. Any pointers on if I need to change driver and if so what's best one to purchase, cost vs quality.

Excellent price been using mine for over 6 months spot on the bad news is if one stops working you have to take all 5 back for a refund you would think they would just replace the faulty one but they dont

Thanks just ordered for collection, wish I could purchase a few of these packs of 5 because screwfix is very far from me but I'm afraid the guarantee would expire.

I have a varilight dimmer switch with 6 5watt samsung gu 10 leds and on all settings there is no noise at all with my ear inches away from dimmer and the leds.

There seems to be quite a lot of confusion here about efficiency/ratings. A little research shows that light bulbs are currently rated under EU Commission Delegated Regulation No 874/2012 (12 July 2012) (!), with ratings given for the power used by a bulb to provide a comparable light output relative to a standard incandescent bulb.

The bulb is A rated if it uses <24% of the power,
A+ rated if it uses <17% of the power,
and A++ rated if it uses <11% of the power.
There is currently no category above A++.

These Screwfix bulbs produce a luminous flux which is at least as good as a 60W bulb, and consume 9W. 9 is 15% of 60, so the bulbs are rated A+. Simples. (And they are hardly borderline in being rated that).

If, as many of us subjectively speculate, these bulbs are actually equivalent to 75W, then their relative consumption is actually 12%, which would make them borderline A++.

Note also that these bulbs have a diffuser - i.e. the coating on the globe which spreads the light out so that the bulb looks more like a regular bulb (and so you don't get the highly directional point sources that a LED produces). That hits the overall efficiency slightly.

thanks ordered great price

Thanks for that. Ironically, if the 7W one is equivalent to a 60W bulb then it should be A+ rated not A++ (as it's only 11.7%)! :smiley:

Neither of those bulbs has a diffuser. Do you know of any A++ rated with a diffuser?

Just to correct its Kelvin

9w but only 60w equivalent, not efficient at all. Can someone confirm if in reality they are brighter?? it is rated at A+, it should give the equivalent of a 90w at least

to be fair it has got the greater then symbol so its a little over 60 watts

I bought the cool white ones last time when they were 5 for £10.
Installed in living room and started giving me a headache so put normal back on.
Kitchen and hall way have cool white on, instant on and very bright, like a 90W bulb equivalent.
At this price I will buy some warm white for living room, as its coming to winter so will use more light anyway.

For people going on about efficiency, have a look at LED Filament bulbs such as this and this. Both A++ rated one 6w and one 7w and both 60w tungsten equivalent.

Or 60W is an understatement, which is perhaps more likely given all the comments from users of these bulbs.

But why speculate when the light output has actually been measured (at 806 lumens)? I'd genuinely be interested to read the spec for a branded bulb with a significantly better efficiency i.e. more lumens for similar/less electrical power. Do you have some in mind? Thx.

Due to problems with dimmer switches, I changed my whole house dimmer switch from non-dimmable.

Much easier and longer lasting for both switch and bulbs, and cost less each time replace them.

I do not really need lights being dimmable.

Cool white is good for bathrooms, kitchens and studies. Warm for lounge and bedrooms :smiley:

Regarding Warm Vs Cool, I've got a mixture of both - Living room, entrance hall, landing and outside lights are warm and I keep these areas more dimly lit whereas Bedrooms, Kitchen, Utility, Garage and Bathrooms are all cool white and although they are lovely and bright - It's not that harsh though when you have a coloured shade to diffuse the light and the bedrooms look fairly natural with these whereas the kitchen and bathrooms are more white light but not blue like some very cool lamps you can get - 4000K+

Very good price.. only downside is non-dimmable

I've been looking around for "cool white" lights and my question is why are they so hard to find?

Useful to know thanks. Will give a new dimmer a try next time. The kitchen GU10 cost me a packet to replace the dimmers as we have an MK grid system in there with six lighting zones all of which had dimmers

sorted out, I went for it. Can see that it is about the same as a 100w filament (maybe better) and the same more or less as a 20w (100w) older neon lamp, unused and branded. So, very efficient and that is what the A+ stands for. Cannot be a 60watts at all, not sure how they quote these figures. I got some 5w led bought at poundland and definitely they nearly beat the 60 watts filament. As a rule, an A+ rated led bulb should give at least 10 times more than his rated wattage and when compared with an older tungsten one and this one does for sure. Even if I am slightly wrong because of the way we see light, this is for sure an equivalent of a 90watts at least

Well said.

The only thing I'd say against these bulbs is that they're slightly longer than a filament bulb and may not suit some shades. ie. protrude out the bottom or top.

Bought these in the past when they were at the same price. Seriously bright. I'd say comparable to the traditional 100w bulbs moreso than the 60w in terms of brightness.

I suspect the brighter comments come from those switching from fluorescents which loose their initial brightness fairly quickly.

I have a (almost) house full of them and they are definitely not this bright. The other bulbs I have are Philips Warmglow 60w equiv which are 806Lm and seem about the same as these.

Both draw 9w which for the given light is reasonably efficient.

800 lumins is correct for a standard 60W tungsten bulb. The greater the colour temperature the slightly higher the light output.

That's unlikely to be the lamps, the problem will have been the dimmer. LEDs are notorious for only being compatible with some dimmers. Unfortunately you can't simply change to LED and have 100% success with your existing dimming system.

​i thought they were brighter, but didn't give it much thought.

how can you say I am wrong if you do not know how bright they are!! Anyway, just spotted now, the OP is saying that the box does say 806Lumens, then looks like this must in reality be an equivalent of a 90-100 watts and not 60w as specified in the advert

Good find

These are good bulbs, had five in my flat for a while now, no issues.

very good price.

​

I love the cool ones. Bargain at this price, I need more. Very handy!

I have the warm and the cool, the cool are very clinical.

Also cool white same price
http://www.screwfix.com/p/lap-gls-led-lamps-white-bc-9w-5-pack/8621j