The answer to 'how long does generator last' is that a well-maintained generator can typically last 10-20 years or more. The lifespan of a generator depends on several factors, including the quality of the unit, how often it is used, and the maintenance schedule.
Properly caring for your generator through regular maintenance, such as changing the oil, air filters, and spark plugs, can help extend its lifespan. Additionally, storing the generator in a dry, protected area when not in use and avoiding overloading it can also contribute to a longer lifespan.