The answer to 'lifespan of light fixture' is that the average lifespan of a light fixture can range from 8 to 25 years, depending on the type of fixture and how it is used. LED light fixtures generally have the longest lifespan, often lasting 20-25 years with regular use. Incandescent bulbs typically last 1,000-2,000 hours, or 1-2 years, while halogen bulbs last 2,000-4,000 hours, or 2-4 years. The lifespan of a light fixture can be extended by using energy-efficient bulbs, avoiding frequent on/off cycling, and properly maintaining the fixture.
It's important to note that the lifespan of a light fixture can vary significantly based on factors like usage, environment, and quality of the fixture. Homeowners should monitor their light fixtures and be prepared to replace them when they start to dim or fail. For any major electrical work, it's best to consult a licensed electrician to ensure safety and proper installation.