An LED lightbulb typically has a lifespan of up to 50,000 hours. That is a big number and can be hard to quantify. It’s nearly six years. That would be nearly six years of leaving a lightbulb on, 24/7, before it needed replacing.

Most of us don’t leave our lights on all day, so eight hours is probably a more realistic example. At eight hours a day that LED lightbulb lifespan could be over 17 years.

LED lightbulb lifespan How is an LED lightbulb lifespan so long?

What gives LED lightbulbs such a long lifespan? There are a few reasons they can go on for so many years.

LED lightbulbs use solid state technology which means there’s less to go wrong. The more moving parts any technology has the more the likelihood of something breaking, and breaking the whole product. LED lightbulbs don’t have that problem.

The way traditional bulbs work is to heat up a metal filament. That metal eventually gives out, in the form of the bulb blowing. LED lightbulbs are designed completely differently. There’s no wear and tear from heating a vulnerable bit of metal that will soon break.

What might affect an LED lightbulb lifespan?

LED lightbulbs don’t have a problem with cold temperatures and work great in the freezing cold. They can have more of a problem with extreme heat – along the lines of heat experienced in a desert. They become less efficient at those kinds of temperatures. If you have an enclosed fitting, which don’t have normal airflow and can get hot, you will want to check your LED lightbulb is designed for that purpose.

Even when an LED lightbulb is coming to the end of its life it doesn’t go out with a sudden pop when you flip the lightswitch, like the old fashioned bulbs. Instead you will notice it slowly getting dimmer. But that’s not going to happen very often, not at 50,000 hours of light.