A:Answer To ensure the best possible signal, it is important to make sure placement is as optimal as possible. Reducing obstructions and placing the router in a central location will help ensure your signal reaches the areas you need.
That being said, for a 4,100 square foot home, we would instead suggest considering one of our Deco Mesh WiFi solutions, such as the Deco M5.
Regards,
TP-Link Support