As your current incandescent, fluorescent, or high pressure gas lights burn out, it’s a good time to consider switching to LED technology.
LED bulbs have made significant advances over the last few years making them a lot cheaper and more efficient than they used to be. Since there are so many LED fixture varieties, choosing an LED fixture is entirely different from picking a traditional fixture.
When shopping for bulbs or fixtures, you’re probably accustomed to looking for watts, an indication of how bright the bulb will be. The brightness of LEDs, however, is determined a little differently.
Contrary to common belief, wattage isn’t an indication of brightness, but a measurement of how much energy the bulb draws. For MH/HPS, there is an accepted correlation between the watts drawn and the brightness, but for LEDs, watts aren’t a great predictor of how bright the bulb will be. (The point, after all, is that they draw less energy.)
For example, Our smallest LED shoe box with comparable brightness to a 500W MH/HPS is only 60W. But don’t bother doing the math, there isn’t a uniform way to covert MH/HPS watts to LED watts. Instead of using Watts as a form of measurement, lumens or lm/W (lumens per Watt) should be used. The lumen (lm) is the real measurement of brightness provided by a light bulb, and is the number you should look for when shopping for LEDs. The reason that there is no real way to covert MH/HPS watts to LED watts is because of the following.
Not every LED fixture is made equal and some get a much higher light efficacy or lm/W than others. LED are a SSL (Solid State Lighting) which provides direct light. The lumens ratings are done in a 2X 360 degree integrating sphere. LED lights cannot be rated the same or side by side any other lighting since the light you get is direct.
MH/HPS bulbs lumen output varies widely and light depreciation can range of 30%-60% with a high percentage of the stated lumen output coming from infrared and ultraviolet light. For more info on light degradation see this post here.
We have listed replacement ranges on the “Additional Information” tab on each product, this will give you a replacement range for the optimal replacement.
For more information about light depreciation please click here.