A:Answer It’s impossible to accurately assess that based on square footage and number of floors. It’s an energy wave transmitter and receiver. As such, it is operating in a variable environment b in addition to constant barriers such as walls, floors, etc. Think of it as a radio. Some days in some places you can have excellent reception, other times not so much. I can tell you that I have a 2200 sq, 2 story house. My router is roughly in the middle of the upstairs floor. I get a full signal most of the time at about 75% of the entire house (not counting the basement) I haven’t checked there. Figuring the overall reception for the entire house, the signal level never drops below 60% anywhere. I would also suggest that if you have any doubts about reception. There are what I’ll call LAN router systems that can be placed in various locations throughout the building and link to serve as a single router with better coverage over a wider area. I haven’t had the need to use that type of setup, but if you need an internet connection to another building, say an unattached garage, you’ll probably do better with a router “”system” . Most ASUS routers but not all, use an Almesh technology which acts as a small network. One last thing, honestly consider just how much you need fast internet over a larger area. Coverage costs $$. If you’re doing conference calls and downloads or uploads that must have the speed as well as the range, don’t skimp on the hardware if not, consider something less expensive. Remember that generally speaking, technology heavy items drop in price much faster than say, machinery. Good luck!
