The Kitchen Vortex Water Revitalizer and the Shower of Life Vortex Water Revitalizer will last beyond a lifetime. The only parts that may need replacement after 10 years are the rubber washers and the rubber rings inside the fittings.
The copper Whole House models will last for at least 40 years, or the same lifetime as any other copper plumbing pipe. The stainless steel Whole House models should last for more than 100 years.