About two-thirds of the small business offices I visit for the first time are running the router that arrived with their internet connection. It's a consumer device doing a job it wasn't designed for, and it usually shows once you know what to look for.
The performance problems appear gradually. Video calls start breaking up mid-morning. A specific desk always seems slow. Connections drop across multiple people at once. Staff learn to work around it and accept it as normal. Nobody connects it to the router because the router has always "worked."
What breaks down under business load
A consumer router is designed for a household with 10 to 15 devices and light simultaneous use. A 20-person office typically has 40-60 Wi-Fi devices active at peak: laptops, phones, tablets, printers, door entry systems, environmental sensors.
Consumer hardware degrades under that density. The scheduling of simultaneous client connections isn't designed for it. Business-grade access points from manufacturers like Ubiquiti, Aruba, or Cisco Meraki handle client density with proper scheduling algorithms and interference management. The practical result is that connections stay stable when 30 people are all on a Teams call at 9am.
The configuration depth matters as much as the hardware. A business needs at minimum three network segments: staff Wi-Fi with access to internal systems, a guest network isolated from everything internal, and ideally a separate segment for IoT and building systems (printers, CCTV, heating controls). Consumer routers support basic guest networks. Proper network segmentation using VLANs to enforce real traffic separation requires business-grade kit.
Coverage design is a separate issue from hardware quality. The most common mistake I see is one or two access points with the power turned up high to cover the whole floor. That gets signal everywhere, but devices at the edge of range connect at poor quality and stay connected rather than switching to a closer access point. Business deployments use more access points at lower power, with better client handoff as people move around.
What proper Wi-Fi costs for an SME
A business Wi-Fi installation for a 20-50 person office (two to four access points, a managed switch, a controller, and proper configuration) typically runs £1,800-4,500 in equipment and £600-1,500 in installation. Cloud management licensing for systems like Ubiquiti or Meraki adds around £120-350 per year.
Set against the productivity cost of unreliable connectivity for 20+ staff, that's a fairly quick justification. The difficulty is that it requires spending money on a problem that's been normalised as just how Wi-Fi works here, and it takes someone from outside the business to notice it.