Metal Halide light bulbs are made to go outside. Thus the technology is engineered to operate in a wide range of temperatures. There are no specifics outlined for such but a reasonable range would be from -10 or -20 F up to 120 or 130 F. If you live in an area where the conditions exceed these limits, we recommend you contact the manufacturer to insure your metal halide will perform properly.
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we own a comercial building the used to be a bank built in the late 70's. all of the interior lights are metal halide. they take a really long time to light up when you turn them one. why is that? if you turn them off and then you need o quickly turn them on again it takes just as long for them to go on as when you first did it. any suggestions? can we replace these bulbs with some other kind of lights?
Hi and thanks for your question. Sorry it's taken so long to respond. I hope you find your way back. Anyway. The delay in the start up of these bulbs is just part of the way Metal Halide bulbs are. There is really nothing you can do about it as all Metal Halides perform in this way. What you should probably do in your case is to replace all your fixtures with either T8 or T5 Linear Fluorescent fixtures. You will more than likely pay for the change over in energy savings over a 6 to 8 month period....depending on where you are and your energy costs.
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