Robot mowers · boundary technology
Boundary wire vs wire-free robot mower: which yard suits each?
A virtual boundary is easier to edit, but a perimeter wire remains relevant for simple, permanent yards and does not depend on satellite reception. Compare installation, reliability, repairs, flexibility and total cost before choosing.
The answer in 60 seconds
Boundary wire favours stable, permanent layouts; wire-free mapping favours editable zones, provided the site supports its navigation system.
Good fit when
Owners comparing installation effort, future yard changes, tree cover and failure recovery—not just the absence of wire.
Poor fit when
Anyone assuming wire-free means setup-free or that a buried wire can never need diagnosis and repair.
Canadian reality
Frost, landscaping work and seasonal storage affect both systems differently; include spring recommissioning in the comparison.
Decision checklist
Five checks to complete before shopping
- Decide whether the yard boundaries will change over the next few years.
- Map trees, buildings and narrow areas that may affect satellite or vision navigation.
- Price the complete wire installation, including professional labour if needed.
- Estimate the difficulty of finding and repairing a future cable break.
- Compare mower capacity, slope and cutting range independently from boundary technology.
A lawn sketch beats the advertised area
Draw separate mowing zones, gates, narrow passages, tree cover and the dock. Measure the steepest section and the slope at the boundary separately. Slope percent is rise divided by horizontal run × 100: 30 cm over 1 m is 30%, about 16.7°, not 30°. Do not use the sloped surface length as the horizontal run.
A smaller-yard reference beyond Mammotion
The Canadian Navimow i105 page presents a 1/8-acre mower with EFLS 2.0 positioning and a 30% interior slope rating. That does not make every 1/8-acre yard suitable: obstructions, boundary conditions and antenna placement can decide the result. Treat this as a specification-based alternative to examine, not a RoboStead field-tested winner. The page was checked September 18, 2026; verify the Canadian bundle and service route before ordering.
Navimow Canada · i105Price the installation you will actually keep
For a boundary-wire quote, request wire length, buried or pinned installation, excluded areas and repair labour. For a virtual-boundary quote, request the antenna or network service, mounts, connectivity requirements and a test of the narrowest passage. Neither quote is complete without blade supply, winter storage instructions and a local repair contact. For an existing wired installation, compare the cost of keeping it serviceable before replacing the entire boundary system.
A documented wired reference: Automower 115H
Husqvarna’s Canadian support record marks the 115H as discontinued. It lists 0.4 acre, 30% slope inside the installation and 15% at the boundary. The Canadian manual describes a boundary wire and guide wire. This is useful when evaluating an existing or used installation, not a claim of current new stock. Confirm the serial number, battery condition and a servicing dealer before comparing its price with a new wireless mower.
Download the yard and service worksheetDirect comparison
Boundary wire or virtual boundary
| Criterion | With wire | Wire-free |
|---|---|---|
| Installation | Wire buried or pinned around the zone | Virtual mapping; sometimes an RTK antenna |
| Initial price | Often lower, installation may cost extra | Often higher |
| Changing yard | Wire must be moved or repaired | Boundaries can be edited in the app |
| Trees and buildings | Boundary does not depend on satellite signal | Can obstruct RTK; vision performance varies |
| Typical failure | Broken wire or failed connection | Signal, mapping, camera or software |
Wire is usually best if…
The yard is simple, permanent, clearly bounded and purchase price matters more than easy changes.
Wire-free is usually best if…
There are multiple zones, boundaries may change, or flexible mapping and control matter.
Models to examine next
Three concrete starting points for your decision
These are not automatic winners. They are reviewed Canadian models with a clear use case, a known limitation and a direct next step. Use the Finder when measurements can change the answer.
Mammotion LUBA 2 AWD 10000HX
The Mammotion LUBA 2 AWD 10000HX is a wire-free all-wheel-drive robot mower rated for lawns up to 2.5 acres. Its reviewed Canadian record combines an 80% maximum slope, a 2.2–4.0 inch cutting range and management for up to 50 mowing zones.
Best suited to a large, uneven or steep Canadian property that needs a higher cutting range and where the mapped mowing area remains comfortably below 2.5 acres.
Measure mowable area rather than total lot size and keep capacity headroom
Mammotion LUBA 2 AWD 3000HX
The Mammotion LUBA 2 AWD 3000HX is a wire-free all-wheel-drive robot mower rated for lawns up to 0.75 acre. Its reviewed Canadian record combines an 80% maximum slope, a 2.2–4.0 inch cutting range and management for up to 50 mowing zones.
Best suited to a large, uneven or steep Canadian property that needs a higher cutting range and where the mapped mowing area remains comfortably below 0.75 acre.
Measure mowable area rather than total lot size and keep capacity headroom
Mammotion LUBA 2 AWD 5000HX
The Mammotion LUBA 2 AWD 5000HX is a wire-free all-wheel-drive robot mower rated for lawns up to 1.25 acres. Its reviewed Canadian record combines an 80% maximum slope, a 2.2–4.0 inch cutting range and management for up to 50 mowing zones.
Best suited to a large, uneven or steep Canadian property that needs a higher cutting range and where the mapped mowing area remains comfortably below 1.25 acres.
Measure mowable area rather than total lot size and keep capacity headroom
Retailer commission never changes which models appear or their order.
Complete decision guide
The details that change the right choice
Use these details to test the choice against your own measurements, routine and non-negotiable constraints.
Where a perimeter wire still wins
A simple, permanent lawn with clear edges can suit a wired system well. Once installed correctly, the boundary is physically defined and does not rely on a satellite view.
Where wire-free earns its premium
Virtual boundaries are valuable for multiple zones, seasonal exclusions and landscaping changes. Editing a map is generally easier than moving buried wire.
Installation cost is not just the mower price
For wire, include cable, connectors, tools or professional labour. For wire-free, include any RTK antenna, mounting, connectivity and the time needed to map and validate every zone.
Repairs fail differently
A wired system can stop when a cable or connector fails; diagnosis may require locating an underground break. A wire-free system can be affected by positioning, cameras, mapping or software.
Boundary choice does not solve mower fit
After choosing a boundary method, still verify mowable area, steepest slope, corridors, cutting height, obstacles, station power and winter storage.
Common Canadian questions
Questions to settle before making the choice
Is a wire-free robot mower always better?
No. It is easier to reconfigure, but a wired boundary can be economical and dependable on a simple permanent lawn.
What happens if a perimeter wire breaks?
The boundary loop may stop working until the break or connector is located and repaired.
Does wire-free mean no installation?
No. The owner may still need to place a station or RTK antenna, map every zone and validate boundaries and passages.
Primary evidence
Official sources checked for this guide
These links support the exact products, limits or Canadian conditions discussed on this page. A retailer page can confirm a purchase route, but it does not replace manufacturer evidence for a technical claim.
Found a changed specification? Send the exact source to our editorial team.
Fail-closed warnings
Two mistakes that can invalidate the choice
- Do not assume wire-free always means easier installation on a heavily obstructed yard.
- Do not choose a wired mower on price alone without including installation and repair costs.
Before checkout
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