Most conventional routers are designed for use in homes with two to three bedrooms, or typically up to 1,500sq ft in size. A router like that may struggle to provide Wi–Fi throughout larger homes, especially where there are bedrooms on upper floors, or maybe even up in an attic. And even in smaller homes you may find that thick walls or ceilings can block the Wi–Fi signal.
A mesh networking system is often the ideal solution for homes like these. Rather than a single router, a mesh system typically consists of two, generally for homes up to 3,000sq ft, or even three routers for really large homes.