I have had this unit for only a short time, but it has worked as advertised.  It thoroughly cleaned the jewelry I placed in it, although it took several repeat cycles to clean dirty watch bands.  I have not yet tried the heating feature.  The unit itself is large but appears to be very solid.  I previously used an ultrasonic cleaner from another manufacturer, which broke down after a year or so, and I would expect this unit to last a much longer time.