Choosing the right 100 watt metal halide bulbs is a relatively easy process. 100W metal halide pulse start lamps are highly efficient, have excellent color rendition, and have a long service life. Because they are unaffected by ambient temperatures they can be used inside or outside applications. They can be used in an open or enclosed fixture depending if the lamp is rated with an "M90/O" or an "M90/E". If it is rated with an "M90/O", it can be used in an open or enclosed fixture. If it is rated with an "M90/E" than it can only be operated in an enclosed fixture only. They prove to be the best choice for many commercial needs such as security, landscape and general purpose lighting.
When choosing the right 100 watt MH bulbs, look for ones that have the longest life expectancy. The average life expectancy is about 15,000 to 20,000 hours, over ten times the life expectancy of an incandescent bulb.
Choosing the right 100 watt metal halide light bulb becomes easier still when taking into consideration all the benefits of the lamps. They have five times the lumen output and last up to 20 times longer than the equivalent incandescent. Thus the 100W pulse start bulb has a lower total operating cost over the life of the unit. In this day and age everyone is looking for ways to save money. Using metal halide lighting over incandescent just makes good money sense.