Do I need a mesh system, or is one good router enough?

It comes down to size and layout. A single strong router covers most flats and small homes well. But if you have a large home, multiple floors, thick or long walls, or a spread-out layout, one router struggles to reach the far corners — that's where a mesh system shines. Mesh uses two or three nodes that work as a single network, handing your phone or laptop from one node to the next as you move, so there are no dead zones and no manual switching. As a rule of thumb: persistent dead spots in more than one area usually mean mesh; a single weak corner can often be fixed with one extender. A Mesh WiFi System for Multi-Story House is the best option when you need uninterrupted WiFi across multiple floors.