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Beginners Guide To LED Kitchen Lighting
Really good kitchen lighting designs characteristically use a great deal of lighting - and we're not talking about putting a few extra roses on the ceiling Kitchen lighting requires all manner of different types of light to handle the requirements of many different zones. Just about the worst lighting solution for a kitchen is the use of bright fluorescent strip lights on the ceiling. Sure, they're unquestionably very bright - but cold, flat and likely to induce a headache in less time than it takes to soft boil an egg.
The most obvious issue with having central ceiling-rose fittings in a kitchen is that they produce dark spots, most noticeably where you cast your own shadow onto work surfaces. A solution seen in many kitchens involves fitting halogen down lamps in a uniform pattern across the ceiling then adding task-specific lighting for workareas, hobs and so on.
This does indeed work quite well, but brings its own set of problem: halogen lamps run at very high temperatures; they don't last well; and they are pretty much the most expensive possible way to light a kitchen. Over ninety percent of the cost of incandescent lighting in general (and halogen lamps in particular) is the electricity they consume.
This almost certainly accounts for the surge in popularity of low energy, low temperature LED kitchen lighting. With mains lighting (GU10 type fittings) it's just a matter of replacing existing spotlights with their LED counterparts. For low voltage fittings (MR16 type), first replace regular 12v transformers with one (or possibly more, according to the number of lights) 12v constant voltage LED driver before switching to LED equivalent light bulbs.
There are 3 principal qualities to consider when evaluating LED spotlights, namely: luminosity (or brightness); color temperature (how blue and cool or yellow and warm the light seems); and light beam angle. Try to obtain as good a match as possible to the performance of your halogen lamps in these 3 areas.
We have become accustomed to rating brightness by wattage, but the rated wattage for an LED light bulb should be about 10% that of the equivalent normal incandescent or halogen bulb. So expect to replace a 35w halogen lamp with an LED rated 3w or greater, 50w requires a 5w LED and so on.
How cool or warm a light appears is graded according to "color temperature". LED lights come in a wide range of white color temperatures (not to mention actual "colors"), but historically it was easier to manufacture blue LEDs and hence many cheap LEDs exhibit a cold/bluish tint. However, if you specify warm white (technically a temperature below 3,500 Kelvins) you should get a fair approximation of the white light normally created by halogen lamps.
A narrow beam angle, say 45 degrees, makes any light appear tighter and more contained to a defined spot, whereas a much wider 120 degrees spreads the light out evenly, eliminating glare and "hot-spots". Quite possibly the best LED spot light currently available that acts as a straightforward halogen replacement is the Sharp Zenigata.
Determining how artificial light appears to the eye often owes less to the light itself than to the surface it is aimed at. A warm feeling is easily obtained by pointing spot lighting at areas that are themselves warmly colored, such as terracotta tiling, any type of wood or even just a warmly painted wall. By contrast, a dramatic effect can be had by simply throwing blue LED light against dark or hard surfaces - blue or green tiles, granite, enamel and steel all lend themselves to this treatment.
Combine LED lights of varying characteristics with different textures and colours to produce a range of effects suited to individual zones in your kitchen. The are almost boundless possibilities, even before you get to playing with LED strip lighting to accent plinths, worktops, coving and more or less anything else that takes your fancy. As ever though, the best designs often emerge by limiting things to a handful or less of the most appealing ideas - but don't be surprised how stunning even small amount of LED kitchen lighting looks.
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