Energy Saving Sunken Spotlight bulbs?

Hattiehall

I have been trying to slowly change as many of our lights to low energy as possible. Have started with the simpler ones and now trying to find replacements for 4 x gu10s in spotlights. Most of the equivelents are either to big or do not give enough light as it is quite a large kitchen. I have just come across this light however which looks good although expensive, but apparently only uses 4.5 watts instead of 50 w and gives realy good light. As our kitchen lights seem to get left on alot of the time despite constant nagging!! I wondered if they would be a good investment.
Has anyone used or seen these before, I think they are quite new
http://www.yourwelcome.co.uk/acatalog/Zenigata_all_purpose_power_LED.html
they are called Sharp Zenigata LED

Look forward to hearing any coments about them.

Fire_Fox

That website is not written very well, but 4.5W = 35W and 6W = 50W; the 6W isn't available in GU10.

How many lamps do you have in your kitchen area? Are they switched on enough to justify expensive replacement lamps? This is probably your best bet if CFLs are too bulky for your fittings
http://www.lightonenergy.co.uk/GU10-Superia-p/gu10-sylvania-superia.htm

NX3

The Sharp Zenigata LED look interesting developement in LED bulbs. I've got a few of other thyes from cree gu10 to ebay 60 led gu10s to experiment with. You can't find much info on those Sharp led yet, a few UK sites and as per the previous post the site is a bit messy. Shame the 6.7w sharp isn't available in a Gu10 format but I guess cooling is the issue

I've also seen Osram Parthom 5w LEd GU10 about. Which osram rate at about 20w replacements, bit weak. Not quite good enough yet but at least proper brands are starting to make led bulbs now.

itf

Hi,

Just thought I would let you know I replaced 10 of my 50 watt GU10 bulbs with the Zenigata bulbs from your welcome, and I was impressed. They have replaced my living room and kitchen bulbs and have barly noticed a difference.

I have used 2 other types of bulbs previously, the first was the type with standard LED's fitted into a GU10 fitting and I found these blue and dim, they were quickly religated to the bedroom where I don't need that much light. More recently I tested the medium power (http://www.yourwelcome.co.uk/acatalog/All_purpose_LED___GU10_halogen_replacement.html) but I tried them in a utility room (just the 2 bulbs) and they gave about the same light as a 60 watt bulb between them - still a bit dim.

In the livingroom I had 6 50 watt GU10 bulbs so I was used to a very bright room. Replacing all 6 with the zenigata still left me with the about the same brightness, though the colour is different and is noticable. I don't yet know what the bills will be like (I am expecting a difference now I have no halogens inside the house, but with the fluctuations in electricity I think this will be hard to measure!!)

Now I'd like to see an LED replacement for the external halogen bulbs!

Keith

rog2

itf wrote: »

Now I'd like to see an LED replacement for the external halogen bulbs!

Me too, keith - ours are 300 watts each. :eek: :eek:

conorevans

I have been researching replacing my Halogen GU10 lightbulbs in my new kitchen that we have just had installed. I wanted to keep the extisting recessed light fittings, but i was looking for a ultra-low energy alternative to the halogen light bulbs we had installed for many years. I was recommended by a colleague litebulbs.co.uk, where i could find the latest energy saving light bulbs. I must say that i contacted this company and there adice was second to none and extremely helpful! They suggested that we should buy a couple of samlpe lamps, to make sure that we were happy with the output of the energy saving lightbulbs they recommended. We have purchased from them 30 of the "exergi" LED GU10's, part number, XG4WW : litebulbs.co.uk
We are extremely happy with our purchase, although they were not cheap, the light out pout from these new LED lamps is excellent and the amount of money we will save is amazing! They have a very clever energy saving calculator that tells you how much energy you will save!

Conor

jonesjw

I bought 2 pairs of mains LED GU10s from B&Q for about £8 last year.
One failed after just over 3 months, when it says up to 30,000 hours on the box.
I had a protracted argument with their counter staff & the manager before they agreed to replace the failed item.
The others are still working.

mitchell8888

Hi - I thought id put my 5 pennith in as I have been through the whole try and test phase involving LEDs. You have to be really careful as there is a misconception with LEDs that they simply cant do the job. It doesnt help that you have our large DIY outlets selling very very poor units! I approached a few pro lighting guys who sell quality replacement bulbs that are really well made. They are very expensive in comparison but save a huge amount of money and will probably outlive me! With regards external lights and using high power LEDS...for me it was down to the light fitting. I used a PAR lamp which has a very large output and simply screws into an existing fitting. For my Halogen replacements I used Professional Lamps 8 watt Lamina units which were available in both 2 pin (Gu5.3????!!!) and GU10 so I could put them all around the house. I remember that the guy I spoke to a Professional Lamps said that they were used in Jewellery stores etc and I can see why. In all the lamps I tried to create a direct replacment, these were the only ones that did the job. Im a few months in and they are still working great so I guess with my hours usage I have only 50 more years before I need to replace them again!!!!

patman99

What about the beam angle though?. Am I right in thinking that a normal GU10 bulb is 50 Deg.?, if so, I need a cre led bulb with at least that, and a lumens of at least 280 to match a normal GU10 halogen bulb. Do they do a Zagnita bulb higher than 4.7w ?, I can't see one listed.

LightPlanet

Going back to the MR16 12V / GU10 240v issue - LEDs typically use low voltage. The GU10 versions contain the driver module within the base, which is why some of them are longer than the standard 50mm. MR16 products use an external driver to do the same job. In many ways it is better to have seperate drivers and LEDs, because both can be damaged by heat, but both produce heat. Seperating them reduces temperature in both elements of the system.
Most existing transformers in low voltage MR16 systems are specified to work with normal halogen loads, typically 20w - 70w, so when you change from halogen to LED, you need to change the driver. Most LED MR16 bulbs require a constant voltage driver and 0-10w rating. The drivers are not too expensive - £6.00 or so.
As far as LED performance for GU10 lights is concerned, the current benchmarks are around 350 lumens for warm white and over 450 for cool white. Beam angles up to 120 degrees are available.
Keith - outdoor LED lights are available, complete with movement sensors and/or security cameras if required.