Robotic pool cleaner vs suction-side pool cleaner: Robotic wins for most pools

The key difference is independence—robotic cleaners are self-contained with their own motor and filter, while suction-side ones rely on your pool’s pump, costing more in electricity and getting stuck more often. Robotic units scrub walls and floors better, catch finer debris, and let your pump rest, but cost $600–$1,200 upfront versus $200–$400. For any real pool, the robotic is less hassle and cleans better; suction-side is only fine for small above-ground pools or if you don’t mind manual brushing.