While you’re upgrading your internet package, it may be time for a new router. We STRONGLY recommend a router with AC capabilities; AC1750 in particular. These routers offer the best speeds and range especially if you are in a large house.
Forget about range extenders, look at a mesh wi-fi system. We suggest going with the TP Link Deco M5 that can be purchased on Amazon for $180.00. This setup will give you excellent coverage throughout your home.