The other main consideration is brightness levels.
Upgrading to LED lighting will result in an increase to LUX levels, which is ideal. All of our installations adhere to AS1680:2008 which stipulates the required LUX levels for different space types and their uses.
Older mercury vapour and metal halide lights have very short lifespans when compared to LED lights and they have a substantial brightness degradation over time. Some of these older lights can lose 40% of their original brightness after only 4 years. Our LED lights only lose 10% of their original brightness over 50,000 hours!
The CRI is a measure of how close the light source is, in quality, to actual daylight. The higher the CRI, the higher quality of the light.
CRI is not a measure of brightness or colour but how well colours appear in that light.
Studies have shown that something as simple as LED lights with a high CRI in produce refrigerators result in higher sales, because the fruit looks riper, plumper and juicier to the eye, as opposed to that in refrigerators with normal fluorescents.