A sprinkler system should last for about 10 years, but it may vary depending on the quality of the installation, how well it is maintained, and the climate.

There is no definitive answer to this question as it depends on a variety of factors, such as the quality of the sprinkler system, how often it is used, and the climate/environment in which it is situated. That being said, most sprinkler systems should last for at least 5-10 years before requiring any major repairs or replacements. It is generally recommended that you have your sprinkler system inspected and serviced annually to help ensure optimal performance and extend its lifespan.