Can you have 2 wifi routers in one house?

Yes, having two routers in one house is common and often necessary for larger homes or homes with multiple floors. A single router usually covers 1,000 to 1,500 sq ft well, so bigger spaces need a second unit to avoid dead zones.

There are two ways to set this up. The first is using the second router as an access point, connected via ethernet cable to the first router, broadcasting wifi in a different part of the house. The second is setting up a mesh system, where two routers work together under one network name, and devices automatically connect to whichever unit has the stronger signal.

Access point setups are cheaper if you already own two routers, but require running an ethernet cable between them for the best performance. Mesh systems cost more but handle the switching between units automatically and don't need a wired connection, since they can use wireless backhaul instead.

For a straightforward 2 BHK or 3 BHK apartment with thick walls, two routers set up as access points or a basic mesh pair usually solves coverage problems more affordably than one expensive high end router.