This DID replace one that was only two years old, so I'll reserve judgement until it outlasts THAT one. One word of caution. If you purchase one of these at a "big box" hardware store, ensure that it is new. Our first purchase was obviously a returned unit and leaked like a sieve. As I have little plumbing experience, I though it was my fault, but we exchanged it for a sealed box, and it installed in a few minutes without a hitch.

These are worth every penny, and you will find lots of uses fir instantly near-boiling water. Makes GREAT coffee.