Typically LED diodes with lenses fade or discolor over time from sun exposure. Trimlight’s residential lighting has no lens or covering — the LED faces directly out of the channel — which means Trimlight LEDs don’t fade, cloud, or yellow like many other exterior LEDs do. The residential bulbs also point down and slightly below the channel, which further protects them from direct sun. We have south-facing Tennessee installs (Williamson County and Forest Hills) running since 2019 with zero observable fade after 6+ years of brutal Middle TN summer sun.