The answer to 'how long does recessed lighting last' is that recessed lighting fixtures typically last 20-30 years with proper installation and maintenance. These fixtures use LED bulbs that can last 25,000-50,000 hours, which is around 10-20 years of typical household use. The housing and trim of the recessed light itself is designed to last for decades when installed correctly.
Proper installation is key to maximizing the lifespan of recessed lighting. They need to be installed with the right clearance from insulation and building materials to prevent overheating, which can shorten the life of the fixture and bulb. Regular cleaning and maintenance, such as replacing worn gaskets, can also help extend the useful life of recessed lights in your home.