> which sounds as if it will make very little difference (assuming most lights are now LEDs). Turning off lights is just good policy, but I've never understood

> which sounds as if it will make very little difference (assuming most lights are now LEDs). Turning off lights is just good policy, but I've never understood this counterpoint. Every LED bulb I've ever owned claims to have a service life measured in years (if not decades), but falls far short of that-- I assume because they run so hot, they degrade their own circuitry. They don't run as hot as filament bulbs but they do still put out heat.