Phillips LED downlighters

missile

George_Bray wrote: »

They are complete swivel downlight sets (chassis and bulbs) at 3 for £12.99, I think. The box reads:

"Energy-Saving Panel mounted lights - includes 3 energy saving bulbs 20 LED GU10."

Lidl had them in last month and most stock may have gone by now. I only bought them for the bulbs - still a fair price, especially because I could have taken them back if hadn't liked the character of the light, but I do. They cast a pleasant shadow on anything on the tiled floor, whereas my previous LED lamps cast an awful dull glow with no shadow - just unpleasant diffuse light. The Lidl lights are only 1.2w whereas the others I had were nearly 2w. You'd think the Lidl lights would be duller at only 1.2w, but they're not.

There's sure to be loads of other bulbs around, just as good as the Lidl ones - it's simply a question of finding them and trying them out in your own room.

I wondered if those were what you were referring to. I saw then, thought wow they are cheap, should have bought them.

missile

I have been doing some calculations, to work out how long it would take to pay back cost of LED bulb. If I replace 50w halogen with these 4w LED http://cgi.ebay.co.uk/10-GU10-78-LED-Warm-White-Light-Bulbs-LOW-Energy-SAVING_W0QQitemZ320495008443QQcmdZViewItemQQptZUK_HomeGarden_Lighting_Lamps_Lighting_SM?hash=item4a9efdbabb

0.46kWh, 4 hours per day @ 8,589/unit = 29 days

If my arithmetic is correct? It seems like a no-brainer :j

Fred_Bear_2

missile wrote: »

0.46kWh, 4 hours per day @ 8,589/unit = 29 days

Using my new calculator, I get 380 days. (600p / 0.046kW x 4hr x 8.589p). Still worth it though.
BTW where do you buy electricity at 8.589p?)

missile

Fred_Bear wrote: »

BTW where do you buy electricity at 8.589p?)

I used Brit Gas websaver 6 second tier tarif as an example.

sunshinetours

Changing simply from 50W to 35W traditional GU10's may give you a 30% saving.

We have done this gradually as the old 50W ones blew and the change in light output is not massively noticeable if you have lots of fittings.
You could also throw in a few LED ones dotted around amongst the lights for further savings

The payback period would be considerably longer from 35W down to LED ones also

As others have said wait a year and see how much cheaper they get

Scoobs72

missile wrote: »

I have been doing some calculations, to work out how long it would take to pay back cost of LED bulb. If I replace 50w halogen with these 4w LED http://cgi.ebay.co.uk/10-GU10-78-LED-Warm-White-Light-Bulbs-LOW-Energy-SAVING_W0QQitemZ320495008443QQcmdZViewItemQQptZUK_HomeGarden_Lighting_Lamps_Lighting_SM?hash=item4a9efdbabb

0.46kWh, 4 hours per day @ 8,589/unit = 29 days

If my arithmetic is correct? It seems like a no-brainer :j

It doesn't matter because those won't replace a 50W. They won't even replace a 15W. My guess is a 10W replacement at best. See my post above.

missile

Using the same tarif it would take 388 days to pay back the cost of replacing a 50w with a 35w costing £2.00.

0.015kWh, 4 hours per day @ 8,589/unit = 388 days

sunshinetours

missile wrote: »

Using the same tarif it would take 388 days to pay back the cost of replacing a 50w with a 35w costing £2.00.

0.015kWh, 4 hours per day @ 8,589/unit = 388 days

No it won't as you need to deduct the cost of replacing the bulb anyway with a regular 50W.
35W standard Gu10's are no more expensive than 50W versions in general so its all savings IMO

I wouldn't replace them until they need replacing naturally - or just replace the high use ones first maybe

Replacing 35 of them would save around £65 a year buy my calcs with no noticable drop in light and no huge outlay

turbobob

Scoobs72 wrote: »

A 35w halogen gives out about 500 lumens. Trying to find a LED GU10 that matches that is difficult, though not impossible. Look very closely at the lumen output of any LED GU10 (if it isn't quoted walk away) along with the beam angle and k rating. Anything with a Cree chip is a good place to start, especially the Cree MC-E chips, although even then there are big variations in lumens per watt because of the different 'bins'.

The best I have found so far are the 7Watt ALT LED Aurora V3s. 355 lumens, 2850-3000K, although the beam angle is a very wide 120 degree, so it is very non-directional, contrary to what turbobob says above. Price is very high, around £25+VAT each. They are available from Lightplanet, though not listed on the website, only the V2 is.

Due to the wide beam angle (versus the existing 35W halogens which have a beam angle of about 45 degrees) it's a bit difficult to say how close they are to 35W, but overall I'd say there's very little difference.

Personally I am probably going to wait another 12 months. A year ago I bought a Zenigata based GU10, which at the time was class leading. The reality was the so-called '35W replacement' with 170 lumens (for the warm white version) was less than a 20W halogen GU10. Also watch out for lumen output being quoted for the cool white versions, not the warm white. The cool whites will give +30% of a warm white version. What may be 300 lumens cool white, might be 220 lumens warm white.
Give it another 12 months and things should improve further - at the very least the Cree based GU10s will get cheaper and more powerful.

Its good to hear that they are improving, and good info. At that sort of money it would be a substantial cost to fit out a room using a large number of GU10's (more than I would want to spend!).

missile

sunshinetours wrote: »

No it won't as you need to deduct the cost of replacing the bulb anyway with a regular 50W.
35W standard Gu10's are no more expensive than 50W versions in general so its all savings IMO

I wouldn't replace them until they need replacing naturally - or just replace the high use ones first maybe

Replacing 35 of them would save around £65 a year buy my calcs with no noticable drop in light and no huge outlay

I certainly would notice the difference, 35w bulbs give out 30% less light than 50w bulbs.

My post is about replacing 50w bulbs, not waiting until they wear out;). I could just take out 30% of the bulbs or maybe all the bulbs and save 100% :rotfl:

You are entitled to your opinion and many thanks for sharing.