There are several factors other than light output to think carefully about when considering an LED retrofit in existing fixtures:
That's not to say that LEDs don't have their place in general use — quite to the contrary. LED progress is steady, and experts recognize that there are applications for LEDs for interior lighting.
"Where new fixtures need to be installed, the incrementally higher cost — relative to a fixture of comparable efficiency but a standard source, like fluorescent — might be low enough when compared to long-term savings to justify it for non-energy reasons,' Audin says. One typical example where this might be the case is in clean rooms or other locations where re-lamping access proves difficult.
In other cases, Audin says, facility managers might be seeking a high-tech look, which may justify higher cost.
And finally, in a few cases installations are being financially assisted by state agencies trying to assess or assist SSL's role as a developing technology.
LED Performance Improving
Where to Use LEDs
Factors for LED Retrofit
Specifying LED Systems