LEDs last forever
Wrong, identical to other contemporary lighting sources, LED bulbs gradually fade over a certain time. The common cause of lumen depreciation includes current fluctuation and excessive heat produced inside the gadget itself. The Lumen maintenance standards explained that when bulb loses 70% of initial output it needs to be changed. Nevertheless, some consider the lumen maintenance threshold at 50%.
Reputed LED light fixtures can retain 70% of their preliminary output for 50,000 hours around, subject to the operating conditions.
LEDs are not bright enough
Most comparisons are proves that LED fixtures carry less light than the conventional alternatives! In factual position it is wrong, such comparisons, are imprecise and deceptive, as they mostly fail to account for the considerable sum of exhausted light in customary lighting solutions. Only measuring a lumen output without considering other important factors is a wrong way of doing so. A better measure is delivered light — how much light a fixture delivers to a surface or area, as measured in lux (lx) or foot-candles (fc) are the more accepted tools to measure light as they account other factors. LED fixtures mostly has a upper hand when comparing lighting fixtures on the basis of delivered light, and even better in some cases compare to conventional fixtures and with consuming far less power.
LED systems cost too much!
Initial cost of fixtures may be higher for some LED lighting solutions. However, their extended life, with almost no maintenance costs which conventional lighting fixtures require over a certain period of time, and considering the fact that LEDs consume far less energy, the overall power costs can be reduced by up to 80%. Therefore the whole cost of LED lighting systems, can be proves to be lower than conventional lighting systems. Actually, payback time of LED lighting solutions can often be covered within three years time.
LED light quality is poor
The important measurement scales of white light classis interrelated with color temperature (CCT) and color rendering index (CCI). The CCT explains a variety of disparity in color that can be readily differentiated by audience even the CCT value is identical. It seems that establishing color consistency, rather a serious disquiet of LED producers. Still the top brands employ a variety of LED selection schemes (binning) to guarantee color steadiness from lighting fixture to lighting fixture.
On a CRI measurement scale of 0 to 100 (indicating poor to good), the aptitude of a light fixture to replicate the colors of objects authentically with regards to the perfect light source, or an incandescent bulb. Most residential and commercial spaces entail a minimum CRI of 70 – 90. While most contemporary LED lighting fixtures attain CRIs of 80% or even better.
LEDs Produces no heat
As we know LED produces no infrared energy, the light from an LED fixture is cool! However, waste heat is produced inside the LED itself all through the process of conversing electricity into light. This waste heat needs to be appropriately detached from the lighting system to exploit fixture performance and to shun harm to the LEDs. In quality LED lighting fixtures, the system removes the heat through state of the art sinks that fetch heat away from the LEDs and disperse it into the surrounding air in the fixture housing.