1. What is a GU10 Spotlight Bulb?

    The GU10 is the most common type of spotlight bulb found in most homes today. It is otherwise known as a PAR16 light bulb and is often used in places where a bright, directional light is needed, such as kitchens and workspaces. It has the classic spotlight shape, with a narrow base that widens into a flat or slightly rounded aperture.
    ‘GU10’ refers to the type of fittings these light bulbs have. Two short, square-ish pins protrude from the base of the light bulb. Like the bayonet cap, this is a ‘push-and-twist’ type of fitting (although a GU10 spotlight bulb will not fit in a BC fitting and vice versa). Be careful not to confuse a GU10 spotlight bulb with an MR16 light bulb. The two look almost identical, except for the fittings, which are much smaller, needle-like pins on an MR16 and will not fit a GU10 lamp.


Halogen GU10 Spotlight

Energy-saving GU10 spotlights

Halogen GU10 spotlight bulbs are commonly made from plastic. An EU directive that took effect in 2016 has banned halogen GU10 spotlight bulbs from sale in the UK. However, there are a plethora of LED energy-saving alternatives available.


Long Barrel GU10 light bulbs

Long barrel GU10s are a variation on the typical GU10 and are designed for the non-standard light fixtures used by some furniture and home furnishings companies. Long-barrel GU10s are around 75mm in length, compared to 50-55mm for a standard GU10.


LED GU10 light bulbs

LED GU10 light bulbs have been designed to look like the halogen light bulbs they supersede. They have the classic GU10 shape and closely resemble their halogen counterparts. They are available in a range of colour temperatures and in both dimmable and non-dimmable varieties.


You can read more about LED dimming here.

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Julie wallis
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Julie wallis
April 12, 2020 8:49 pm

Can you help. I need Gu 10 light bulbs desperately but all I can find is a long barrel bulb and I’m trying to get the round bulb with a short barrel. Can I get these? Will the long barrel fit in a light that has a short barrel?

Drew Dunlavy
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Drew Dunlavy
April 26, 2020 2:13 pm
Reply to  Julie wallis

That’s what I’m looking for, too. I installed several in my kitchen soffit about 5 years ago. Got them from Home Depot. Then they stopped carrying the fixtures and the bulbs.

Anthony Mason
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Anthony Mason
June 25, 2020 4:10 pm

Can anyone advise me, I have been asked to source a GU10 LED Bulb LCL 461 – I cannot find any reference anywhere as to what LCL461 refers to – please can you help me?

Maureen
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Maureen
November 1, 2020 1:37 pm

Hi I am wanting to replace 1 dead Crompton LED GU10 WWSMD Bulbs which have died in kitchen fire rated ceiling downlights. I have 20 lights and don’t want to replace them all if I end up with an odd light. Struggling to find them and wondering if they have been discontinued. If they have can you recommend an alternative. Thanks.

Robert Grant
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Robert Grant
December 16, 2021 4:05 pm

I have a Christmas decoration indoor light up house. The Mr8 12v 8 watt light bulb has blown. I am having difficulty finding a replacement. I see you sell 12 v 10 watt bulbs. I was wondering if this would be a suitable replacement.

Steven
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Steven
January 18, 2022 11:52 am

One of the bulbs on my bathroom celling has just blown. The details listed are LGU104CWCOB, 4W, 40mA, 240V-50Hz, 4000K Cool White, 43 13. Can you point me to the correct replacement please?

Colin
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Colin
January 23, 2022 9:16 pm

Hi, I’m trying to replace a Lumilife GU10 – 5w -CW
480lm,6000k, 60degree. Any suggestions (also what does 6000k mean?).

Colin
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Colin
January 23, 2022 9:17 pm

Sorry, should have been 460lm

David Oakes
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David Oakes
April 5, 2022 1:00 pm

Is a par16 gu10 bulb the same size as a gu10.

John
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John
May 16, 2022 9:01 pm

Hi can I replace osram 65821 with osram 64821?

Steve
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Steve
June 17, 2022 1:56 pm

Hi, I have some Aurora AU-GUF4011/30 CFL GU10 lamps that I would like to replace with LED. The length of the lamp is 88mm and the diameter is 64mm. Can you recommend an LED lamp with same dimensions please?