The answer to 'light fixture replacement schedule' is that most light fixtures should be replaced every 8-12 years on average. This timeframe can vary depending on the type of fixture, usage, and quality of the materials. Proper maintenance and care can extend the lifespan, but eventually all light fixtures will need to be replaced as the components wear out over time.
Some common signs it's time to replace a light fixture include flickering lights, dimming, buzzing or humming noises, and physical damage or deterioration to the fixture itself. Upgrading to more energy-efficient LED fixtures can also be a good reason to replace older lighting. When it's time, it's best to hire a licensed electrician to ensure the new fixture is properly installed and up to code.