The unique technical characteristics of metal halide lighting consistently outperform incandescent, mercury, HPS and fluorescent alternatives.
Metal Halide vs. Incandescent
A 100 watt metal halide lamp provides five times the lumen output of a 100 watt incandescent lamp and it will last 20 times longer. Although incandescent lamps cost less initially, metal halide lamps offer a lower total operating cost over a lifetime.
Metal Halide vs. Mercury
Vapour Mercury lamps have long life, but are not as energy efficient as metal halide lamps, producing only 35 – 58 lumens per watt. Their limited blue-green light spectrum has a lower CRI than metal halide.
Metal Halide vs. HPS
While HPS lamps offer long life, they do not deliver the same light quality as metal halide. Because of their dominant sodium content, HPS lamps yield strong yellow light (2200K) and have a very poor CRI of 20 – 25. The full spectrum light of metal halide has a much higher CRI.
Metal Halide vs. Fluorescent
Fluorescent lamps are harder to direct because of their larger size. A 100 watt metal halide lamp produces the same light as three 48 inch, high output, T8 fluorescent lamps. Metal halide lamps also tolerate a much wider operating temperature range. Fluorescent’s are often limited to temperature-controlled indoor applications. T8 fluorescent lamps perform optimally at approximately 25ºC, degrading measurably as temperature varies. T5 lamps perform similarly, but peak at 35ºC.