Clean water on day one, and on day thirty
Filter swaps by hand
Pops in and out without tools. Nothing to unscrew, nothing to order first.
Water keeps moving
Constant circulation instead of standing still, so heat and filtration stay even.
GFCI plug fitted
Cuts power the moment it senses a fault. Comes on every unit.
Ten minutes a week
Rinse the cartridge, replace it when it's due. That's the whole routine.