Guide Technique Durée de vie

Lighting Guide | Light Source Life Span

What is a light source

What is a light source's life span?

The lifespan of a light source, often indicated in hours, refers to how long a particular LED or other lighting technology can function effectively. It's a critical factor to consider when choosing lighting for your home.

Modern LED lights, for example, are known for their impressive lifespan, often lasting tens of thousands of hours before needing replacement. In contrast, traditional incandescent bulbs have a much shorter lifespan, usually measured in a few thousand hours.


Under normal circumstances and barring manufacturing defects or transformer failures, LEDs are designed to continue functioning within the specified lifespan provided by the manufacturer. However, as time goes on, they may gradually decrease in intensity.

Several factors can influence the actual lifespan of a light source. These factors include ambient temperature, the luminaire's cooling system, the presence of proper ventilation in ceiling spaces, how often the light is turned on and off, and the overall quality of the LED.

Typically, a light source integrated into a luminaire tends to have a longer lifespan compared to a replaceable LED bulb. When selecting lighting for your home, understanding the expected lifespan of the light source and how it may be influenced by various factors can help you make informed decisions about lighting maintenance and replacements.

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