What is lumen, candela and lux?

• Lumen (lm): unity for flux. From now on THE reference to compare lights with eachother. Flux is the amount of licht that a source beams every second.
• Candela (cd): unity for illumination. The illumination is the measurement for the flux that is beamed by reflectorlamps in a certain direction.
• Lux (lx): measurement for illuminance. The amount of light that is present on a certain place. Or otherwise: the part of the flux that falls in on the surface; 1 lux = 1 lumen/m².

Extra saving tips

• Use as much natural light as possible, the sun shines for free.
• Only illuminates where and when is needed.
• Place a detector or time switch where your lights might be burning unnessecairy (hallway, basement, garage, ...). LED lights are perfect for frequent switching.
• Buy quality lamps with good references.
• Go for lamps with the smallest wattage and the longest lifetime for the most amount of light.
• Choose lights with energy label A.
• Dim lights for less consumption.
• Change old halogen light bubls for your mood lights by LED lights.
• Paint walls and ceilings in a light color.
• Regularly dust off your lights bulbs and fixtures.

For new builders:

• Take into account to provide enough windows in every room: at least 1/5th of the floor surface.
• Plan you lighting at an early stage of construction.
• Don't use halogenic spots in the ceiling anymore. There are more energy sufficient solutions.
• Be guided by your architect or a supplier of lighting fixtures. He has dedicated software to calculate how much light you need in every room, where to put it and what kind suits you best.