Quick Answer
Fix your mesh Wi-Fi kit when dead zones appear before replacing it, because dead zones are usually a node-placement or count issue, not a faulty kit. Reposition the nodes, add a node, or update firmware first. Replace the whole kit only if your home is larger than the kit's rated coverage or the hardware is old; a Wi-Fi 6 mesh (from around R2,500) with an extra node usually fills the gaps cheaper than a full replacement.
Diagnose dead zones before buying new
Wi-Fi dead zones are almost always a coverage-layout problem you can fix. The usual causes are nodes spaced too far apart, a node placed behind a thick wall or in a corner, or simply too few nodes for the home's size and layout. Before replacing the kit, reposition the nodes so each sits within strong range of the next and covers the dead area, and update the firmware, since coverage and roaming improvements often ship in updates. Many dead zones disappear with better placement alone.
If repositioning is not enough, adding a single node to the existing kit (most mesh systems are expandable) usually fills the gap for far less than a new kit. Replacement of the whole system is justified only when your home exceeds the kit's rated coverage even with nodes added, or the hardware is old and weak.
Steps before a full replacement
First, update firmware on every node. Second, reposition nodes centrally and away from thick walls or metal. Third, if a stubborn dead zone remains, add a compatible node to the existing kit. Fourth, wire a node with Ethernet to a far area if your home has cabling, which extends coverage cleanly. Only if dead zones persist after all of this, or the home is simply too large for the kit, is a full replacement, ideally a Wi-Fi 6 mesh from around R2,500, the right move.
FAQ
Why does my mesh Wi-Fi have dead zones?
Usually nodes are spaced too far apart, placed behind thick walls, or there are too few for the home's size. Repositioning the nodes or adding one, plus a firmware update, fixes most dead zones without replacing the kit.
Can I add a node to my existing mesh kit?
Most mesh systems are expandable, so adding a single compatible node usually fills a dead zone for far less than a new kit. Check your system supports expansion, then place the extra node between the weak area and the nearest node.
When should I replace the whole mesh kit?
When your home exceeds the kit's rated coverage even after adding nodes, or the hardware is old and weak. In that case a Wi-Fi 6 mesh from around R2,500, sized to your home, is the right replacement.
a new kit, reposition your nodes centrally and add one node to the existing system if a dead zone remains; expansion usually fills gaps for far less than replacing the whole mesh.