3-5 years. Hettich rebounders generally last about 3-5 years. If they are well maintained, their service life will be longer. The rebound inner core of Hettich rebounder adopts an integrated design, which is different from the split inner core and is stronger and more durable. The inner core is designed with a rubber head, which has a buffering and anti-collision effect. The switch sound is small and will not cause damage to the door panel.