With Kinetico, we like to keep it simple. With some of our softeners there is a filter before the softener that will periodically need changed. We make it easy enough for the homeowner to do themselves or we can send a technician. Our filters are also reusable 4x, and an inexpensive supply to replace. Our drinking water stations have sets of filters. All the filters are color coded and come with step-by-step instructions for replacing, or if you prefer, you can call us and schedule this service to be done for you.