Husqvarna
Husqvarna Automower 420 iQ
Key facts
- Lawn area
- 1.00 acres 43,560 sq ft maximum · 21,780 sq ft unqualified — Husqvarna publishes this as the area capacity for irregular lawns. The maximum above it applies to systematic mowing. Two rated modes from one source, not disagreeing sources.
- Slope inside the lawn
- 45%
- Slope at the boundary
- 15% Often the binding limit
- Boundary system
- Virtual boundary
- Positioning setup
- Antenna or correction service What it needs in order to know where it is
Data coverage: 13 of 20 fields
Coverage and terrain
- Maximum lawn area
-
43,560 (1.00 acres) sq ft Verified [1]
Husqvarna's published maximum, which applies to systematic mowing. See the unqualified figure for irregular lawns.
- Maximum slope
-
45% Verified [1]
Inside the boundary.
- Maximum slope at boundary
-
15% Verified [1]
Far lower than the 45% interior rating — the edge of the working area is the binding limit on a sloped yard.
- Narrowest passage
-
Not verified
Cutting system
Navigation and boundaries
- Navigation
-
RTK GNSS, Boundary wire Verified [1]
Boundary type is listed as virtual wire and physical wire — it can be installed either way.
- Boundary wire required
-
No Verified [1]
A physical wire is supported but not required: Husqvarna lists virtual wire as an installation option via EPOS.
- Antenna / base station required
-
Antenna or correction service Verified [1]
Husqvarna documents two installation routes for this model. Where Husqvarna Cloud reaches the address, correction arrives over that service; where it does not, the EPOS reference station included in the box is mounted on the property instead. Husqvarna publishes an address checker for the coverage, so which route applies is decided by location, not by the model.
- Multiple zones supported
-
Yes Verified [1]
Husqvarna documents mapping multiple work areas with transport paths between them.
- Zone count
-
Not verified
Hardware
Price and warranty
- MSRP
-
Not verified
- Warranty
-
48 months Verified [1]
Published as a 4-year warranty.
Does this model suit your yard?
The figures above are what the manufacturer publishes. Whether they clear your lawn depends on numbers only you have — so the useful next step is to put yours in, or to read what the ones that matter most for this model actually mean.
- Do you need an antenna or reference station, and where does it go? The manufacturer documents both a local antenna and a correction service for this model.
- Robot mowers for a sloped boundary: which models still qualify It publishes a separate, lower rating for the slope where the lawn ends.
- Front yard, back yard: mowing separate areas It states that it can hold and mow more than one separate area on its own.
- Wire-free or buried wire: what you're really choosing It installs without a buried wire, which is not the same as having nothing to install.
- Measure your yard before you shop: a practical checklist Whichever models you shortlist, these are the measurements that decide between them.
Based on published manufacturer specifications, not hands-on testing.
Specifications last verified .
Sources
- Husqvarna US — Automower 420 iQ product page — checked September 18, 2026