Wi-Fi is radio, and radio has rules
A router does not "fill" a house with internet the way a lamp fills a room with light. It is a radio transmitter, and its signal obeys three rules:
- Distance. Signal strength falls off quickly as you move away. Twice the distance is much less than half the signal.
- Obstacles. Every wall costs signal, and the material matters: drywall costs a little, brick and concrete a lot, and metal — ducts, appliances, mirrors with metallic backing, a refrigerator — can nearly block it.
- Interference. Neighboring networks and household electronics crowd the same airwaves, especially on the 2.4 GHz band. The Wi-Fi bands explainer covers why that band is busiest.
A more expensive router mostly buys you a stronger or cleverer radio. It cannot repeal the three rules — which is why placement so often beats price.
The four placement habits that fix most rooms
Central beats convenient. Routers often end up where the internet line enters the house — a corner, a basement, a hallway closet. That means half the signal is spent broadcasting to the yard. Moving the router toward the middle of the home, even by one room, evens out coverage everywhere.
Raised beats low. Radio spreads outward and downward reasonably well, but a router on the floor or buried behind the TV stand starts every journey through furniture. A shelf or the top of a bookcase is meaningfully better than the floor.
Open beats hidden. Cabinets, entertainment centers with doors, and the gap behind the television are all signal traps. They also make routers run hot, and heat shortens their life. Out in the open wins twice.
Away from metal and motors. Kitchens are terrible router neighborhoods: a refrigerator, a microwave, and metal ductwork all in one room. A few feet of separation from large appliances pays off.
If your router has antennas
External antennas are not decoration. On most routers they radiate outward in a ring around the antenna's length, so keeping them upright suits a single-floor home, while tilting one can help cover a floor above or below. The router maker's documentation shows the intended orientation for your model; a quick test before and after adjusting takes two minutes with a speed test.
How to test a new spot properly
You do not need instruments. Stand where the TV is and run a speed test on your phone, then repeat at the far bedroom. Move the router, wait two minutes for it to restart, and run the same two tests again. Compare like with like, in the evening if that is when you watch.
Two or three candidate positions usually reveal a clear winner within half an hour — and the result frequently matches or beats what a new router would have done from the old spot.
When position is not enough
Some homes are simply hard: long layouts, two floors, thick old walls. If no single spot covers the house, the honest upgrades are, in order:
- A mesh Wi-Fi system — two or three matched units that pass the signal along. Place the second unit where the first one's signal is still decent, not in the dead zone itself; it can only repeat what it receives.
- A cable to the problem room. One Ethernet run to the TV ends the argument permanently, as the wired vs. wireless explainer explains.
This article is general guidance compiled from Wi-Fi standards and router manufacturers' placement documentation. Your router maker's site may note anything specific to its models, such as antenna orientation.