Lighting, Light Fixtures, Ceiling and Exhaust Fans - metal halide bulbs

Around the exterior of the facility where I work we have several types of outdoor lighting fixtures which use metal halide bulbs, and when they burn out they are very costly to replace. Is it absolutely necessary to replace them with metal halide replacement bulbs or is there another less costly alternative?
Are these metal-halide-requiring fixtures kind of outmoded now? Seems like they get so hot and use up a lot of energy. Any comments/advice appreciated.

Around the exterior of the facility where I work we have several types of outdoor lighting fixtures which use metal halide bulbs, and when they burn out they are very costly to replace. Is it absolutely necessary to replace them with metal halide replacement bulbs or is there another less costly alternative?
Are these metal-halide-requiring fixtures kind of outmoded now? Seems like they get so hot and use up a lot of energy. Any comments/advice appreciated.

All it depending on wattage somecase you can change the luminaire to CFL or stay with MH but go with pulse start verison and no not really outmoded at all depending on useage.

let me know what wattage MH you have on outdoor luminaires maybe I have some suggest with it.

Merci.
Marc

Perhaps in my first post here I was mistaken to say the lamps in these fixtures are metal halide. Stamped inside the fixtures it says "use 100W mercury lamps only." From one of the luminaires a burned-out bulb was a Phillips 100W H38HT, and from another identical luminaire was a Sylvania 100W Mercury H38 R H38JA-100/DX.

In a different style outside luminaire inside it says to use M-90 Lamps 100W Max MED MH. And the burned out bulb in that one was a GE MVR100/U/MED R100 Multi-Vapor.

Are any or all of these metal halide? Are the bulbs I mention appropriate per the info stamped on the inside of the luminaires?
Can any of them be substituted for a CFL lamp?

Perhaps in my first post here I was mistaken to say the lamps in these fixtures are metal halide. Stamped inside the fixtures it says "use 100W mercury lamps only." From one of the luminaires a burned-out bulb was a Phillips 100W H38HT, and from another identical luminaire was a Sylvania 100W Mercury H38 R H38JA-100/DX.

In a different style outside luminaire inside it says to use M-90 Lamps 100W Max MED MH. And the burned out bulb in that one was a GE MVR100/U/MED R100 Multi-Vapor.

Are any or all of these metal halide? Are the bulbs I mention appropriate per the info stamped on the inside of the luminaires?
Can any of them be substituted for a CFL lamp?

First thing you have to understand the old Mercury vapour is about history now

100 watt Mercury vapour bulb you can still get them but pretty much limited so what few peoples do replace with 100 W Metal Halide bulb it will produce almost double of light level over old Mercury vapour did ran.

Is this luminaire is enclose or open type if latter you have to becarefull some MH bulbs can not run in certen postion at all for safety reason.

The MVR is metal halide verison and it will work on Mercury Vapour ballast but some may have hard time to get it start that is only curpit otherwise both pretty much interchangebale what I heard.

The MVT bulb have about 9,000 to 12,000 hour life unless you get pulse start verison that can run long as 18,000 hours

I don't know if they can converted to super CFL unless you disconnect the ballast first I know 55 or 65 watt super CFL will outlight both verison but how well they will function in cold weather that part I really can't comment yet. ( the super 65 CFL is about roughy same light level with old school MV but this info is taken with grain of salt so that something you need to check it out if that will work for your useage espcally in commercal location that is critical there.

Let me dig up couple items I may find something so give me a day or two { I am in French btw so I will reply it much as I can }

Merci,
Marc

Thank you very much Marc for your helpful and informative reply. Plenty to consider here, that's for sure. I'll take some time to sort it out...