Our gurantee time is 1 year. However, the service life is 5-20 years depend on our customer feedbacks. The important thing we should notice is the weaking of ultrasonic frequency.
Normally, 5-10% weakness rate will be happened each year.So we suggest that you should replace the ultronic vibrator each 2-5 years. As a customer, you must be hope the ultrasonic cleaning machine support service as long as possible, then the ultrasonic vibrators should be seperated in a box so that it will be easy to upgrade after 2-5 years.