A badly placed node is the most common reason an expensive mesh system changes almost nothing. The rules are simple and nearly everyone breaks the first one.
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Put each node roughly halfway between the main unit and the area you want to fix — never in the weak area itself — 20 to 30 feet from the nearest other node, and at about waist-to-chest height rather than on the floor. eero publishes those numbers and they hold across brands: no more than 50 feet between units on a wireless link, and never inside the dead zone, because a node can only rebroadcast the signal it can receive.
The one mistake nearly everyone makes
Putting the node where the problem is. It is the intuitive move and it is backwards. The node needs a strong link to the main unit before it can give anything to the room, and in the dead zone it has neither. Moving a node ten feet closer to the main unit routinely doubles what arrives in the far room, because the node is now receiving a usable signal to pass on.
Count walls, not square feet
Published attenuation figures explain why distance is a poor guide. At 2.4 GHz, Keenetic lists an interior wall of about 15 cm as costing 15-20 dB and leaving roughly 15% of the open-space distance, and a 30.5 cm bearing wall as costing 20-25 dB and leaving about 10%. A concrete floor sits in the same band. Those losses apply per obstacle, so they compound.
In practice: two nodes 25 feet apart with one stud wall between them will beat two nodes 15 feet apart with a chimney breast and two bearing walls between them. Walk the path the signal has to take, not the shortest line on a floor plan.
Rule
Do this
Why
Direction
Halfway between the main unit and the dead zone
The node must receive a strong signal before it can share one
Distance
20-30 ft between units, 50 ft absolute maximum
eero's published spacing; beyond it the backhaul degrades fast
Height
Waist to chest height, on a shelf or table
Radios project along the plane they sit on, not up from the floor
Obstacles
Count walls and floors, not feet
A bearing wall can cost 20-25 dB on its own
Enclosure
Out in the open, never in a cabinet or behind a TV
Metal and dense wood reflect and absorb the signal
Vertical hops
Prefer a timber floor over a masonry wall
A node on the landing often beats one across a floor
Verification
Use the app's node-to-node signal report, not your phone's bars
Phone bars show your link, not the backhaul
Placement rules in the order they matter. The first two are the ones that change outcomes.
Scroll the table sideways to see every column.
Height and enclosure
eero's guidance is that units radiate mostly along the plane they are placed on and somewhat upwards, so the floor is the worst available surface and halfway between floor and ceiling is the target. The same logic rules out the places people prefer aesthetically: inside a media cabinet, behind a television, in a kitchen cupboard, on top of a refrigerator. Metal reflects, dense wood absorbs, and both are worse than any distance you would otherwise be arguing about.
Two floors, three floors
A timber floor is a mild obstacle compared with a load-bearing wall, so a vertical hop is often the best-performing one in the house. Put the main unit upstairs and the node downstairs — or the reverse — more or less above each other, rather than at opposite ends of one floor.
With three floors, wire the middle if you possibly can; two wireless hops in series is where mesh systems stop impressing anyone. The three-story guide has the layout, and the two-story one covers the simpler case. For how many units you need in the first place, see how many mesh nodes.
Try this first
Add one node, test, then add the next
Place a node, check the app's reported link quality back to the main unit, then run a speed test in the room you were trying to fix. A node that reports a weak or fair link is in the wrong place and no amount of later tuning will rescue it. Only once a node passes both checks should you place the next one — this is the difference between twenty minutes of setup and a fortnight of suspicion.
When placement cannot solve it
Sometimes there is no position that both reaches the main unit and reaches the room — commonly a detached garage, a finished basement, or a far wing behind masonry. At that point the answer is a wire rather than a better spot. A node on an Ethernet cable carries full throughput regardless of where it sits, and coax already behind your televisions can become that cable with two MoCA adapters. The mechanism is on the backhaul page.
The ordinary router version of all of this, which is worth doing first because it is free, is on where to put your router.
What to look for in a system if placement is your constraint
Two features earn their money when the floor plan is awkward: an app that reports node-to-node link quality honestly and warns you when a unit is too far away, and enough radio in each unit to survive a long hop. The two picks below are the systems we would choose on those grounds specifically rather than on peak speed.
How we picked
We do not run a test lab. Rankings here are built from the manufacturers' published specifications, measurements taken by independent outlets that do have labs, and the structural reasoning on this site about what a given house or job actually needs. Every product was checked as currently sold before it was included. Where a figure appears it is attributed and linked in Sources; where we have no basis for a claim, it is left out. Our methodology sets out exactly what we will and will not assert.
Quick picks
Ranked by our published scoring rubric (placement guidance, range per node, wired backhaul, value). Tap any row to jump to the full write-up, or go straight to the retailer from the right-hand column. How we score.
#
Product
Best for
Score
Price
1
Illustrative
eero Pro 7The only placement guidance in the category we would call genuinely useful, plus five Ethernet ports per unit for when placement alone is not enough.
Netgear Orbi 870Large satellites with the antennas to match: the system that loses least when placement options are genuinely limited by the floor plan.
Scroll the table sideways on a narrow screen. Scores are our editorial assessment from published specifications and independent testing by named outlets — not our own lab results. What we do and do not test.
The picks in full
Illustrative
#1 · The app that tells you when a node is too far
eero Pro 7
eero · Premium
The default tri-band Wi-Fi 7 mesh for most houses: five Ethernet ports on every unit, a genuinely painless app, and a smart-home hub built in.
Key specifications
Standard
Wi-Fi 7, tri-band (2.4 / 5 / 6 GHz)
Ports per unit
5 Ethernet, including a 10 Gbps WAN
Coverage
About 2,000 sq ft per unit
Devices
200+
Smart home
Thread, Matter and Zigbee hub built in
Score 9.0/10
Placement guidance10.0
Range per node8.5
Wired backhaul10.0
Value7.5
What it gets right
+Five Ethernet ports per unit is unusually generous, and it makes wired backhaul easy in a house with any cabling at all
+The 6 GHz band gives the nodes a fast, uncongested lane to talk to each other on
+Setup and node placement guidance in the app are the least frustrating of any system in this category
+Acts as a Thread, Matter and Zigbee hub, which can replace a separate smart-home bridge
What to watch for
−Some network controls people expect are behind eero's optional subscription
−Tri-band, not quad-band — a very large house on a multi-gig plan may prefer more radio capacity
−Amazon account linkage is part of the experience whether you want it or not
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Common questions
How far apart should mesh nodes be?+−
eero's published guidance is 20 to 30 feet between units and no more than 50 feet when the link between them is wireless, which is a sound rule for any brand. Reduce those distances when walls are masonry — count obstacles rather than feet, because a single bearing wall can cost 20-25 dB.
Should I put a mesh node in the room with bad Wi-Fi?+−
No. That is the most common placement mistake. A node rebroadcasts only what it receives, and in the dead zone it receives almost nothing. Place it roughly halfway between the main unit and the bad room, so it has a strong link to work with.
What height should a mesh node be at?+−
Roughly halfway between the floor and the ceiling, on a stable flat surface such as a shelf, table or countertop. eero notes that the units radiate mostly along the plane they are placed on, so the floor is the worst option — and a cabinet or the space behind a television is worse still.
Is it better to put a mesh node on another floor or across the same floor?+−
Usually another floor. A timber floor is a mild obstacle compared with a load-bearing wall, so a node placed more or less above or below the main unit often outperforms one placed at the far end of the same floor.
Illustrative
