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 changing, or again you can call us to schedule a technician (they’ll even sanitize the system at no extra charge).