If you have a large home network, you may have trouble connecting to that network wirelessly from specific points in your home. A second router can improve network performance and help you stay connected from anywhere in your home.
HOME NETWORKING 101 – HOW TO CONNECT TWO ROUTERS INTO ONE HOME NETWORK
Yes, it is possible to use two (or even more than two) routers on the same home network. The advantages of a network with two routers are:
There are many types of routers available. From routers that cost less than $50 to long-range routers, here are some of the best choices on the market, and they're all available on Amazon.com:
Installing a router to work as the second on a home network requires special configuration. Installation involves choosing a good location, ensuring the correct physical connections, and configuring IP address settings (including DHCP).