A. These UV resistant fittings have a UV inhibitor integrated into the plastic, so they won't break down over the course of one or two seasons like most plastics do when exposed to consistent sunlight. This line of push-connect fittings have been put through high intensity testing and are rated for outdoor use, just like plastics used in automotive applications or any other outdoor plastic. You can reasonably expect them to last several years in direct outdoor sunlight, if not longer. If indoors, these fittings have a life expectancy similar to metal fittings. However, just like any part of your plumbing system, you must protect them from freezing.