Most helpful positive review
20 of 20 people found the following review helpful
Was the best value B22 LED bulb, but things are moving on
on 11 November 2013
The following review still holds, but in the year since it was written things have quickly moved on, particularly with cost reduction, now making this bulb seem rather expensive, see the additional note at the end, so I have now knocked off one star.
Based on their present cost, £15.99 including delivery (at time of writing, November 2013), and the specifications given,this is the best value B22 (bayonet cap)LED I have found. I have also bought several "used" bulbs for a bit less, which seem just as good.
I am now using these wherever I can and already have seven, with another two on order.
They are not as bright as a 100W filament bulb, but are more like a 75W bulb, but even so they give a good light.
With electricity at 13p per kWhr, given a 25,000hrs life, 1163 lumens output and 11W power consumption, this works out to about £1.8 per million lumen hours, which is the best I have found. This is nearly 5 times better value than the equivalent 75W incandescent bulb, taking about 8 months, at 8hrs per day, to recover the cost of this bulb.
Even with such a low energy bulb, over it claimed life, the cost of the electricity it uses is still more than double the cost of the bulb. In comparison for the equivalent 75W filament bulb, the electricity cost is more than 40 times the cost of the bulb. Hence the cost of this LED bulb is not that important, compared to the cost of the electricity it saves.
The next best value LED appears to be the Long Life Lamp Company B22 10 Watt LED Bulb, at just under £2 per million lumen hours, but they only have an output of 830 lumens (60W filament bulb equivalent) and seem to be unreliable in achieving their claimed 35,000hrs life. They are also quite large in comparison.
This all depends on the reliability of the specifications and whether the light output and power use remain as claimed, and whether the claimed life is achieved.
If you don't want a dimmable bulb, then these are much better value than the old filament bulbs, and a significant improvement on the CFL bulbs, while also producing a very good light, but they are larger than a normal filament bulb.
Additional note, as of November 2014
Since I wrote the previous review, a year previous, LED bulbs have continued to improve, reduce in size, and become much better value. When checked with a light meter and energy meter, the "MiniSun High Power 12w LED BC B22 SMD GLS Bulb - 1000 Lumens - Warm White" would now appear to be much brighter from a smaller bulb, for similar energy consumption, but at a much more competitive price.
Also the "10 Watt LED Light Bulb GLS 800 Lumens B22 Bayonet Cap Beautiful Warm White Colour New Technology", from the Long Life Lamp Company, give the same brightness, along the axis, 182 Lux at 1metre, from 10W, but costs just £6.39, including delivery.
These LT Lighting bulbs continue to work just as well, but at £15 (now reduces to £13) they seem over priced compared to others now available.
My facilities only allow measurement of brightness, in Lux, along the bulb axis. This depends on the inverse squared distance of the light meter from the bulb. It also depends on the beam angle of the bulb. The smaller the beam angle the brighter the light, for a given total light output in Lumens. The effect of distance effect can be resolved by giving the brightness in Candela = Lux x Distance^2.