Husqvarna Automower Models Compared: 410iQ, 420iQ, 435X AWD and 520H EPOS

Husqvarna Automower models split by how they know where the lawn ends. The iQ line (410iQ for about half an acre, 420iQ for up to an acre) uses EPOS satellite positioning and app-set virtual boundaries with no wire, while the 435X AWD uses a buried boundary wire but climbs steeper ground, with a listed 70 percent slope inside the work area. Pick the 410iQ for a modest lawn with no wire to bury, the 420iQ for bigger open lawns, and the 435X AWD when slopes decide the purchase.

Our top picks

Top pickHusqvarna Automower 550 Robotic Lawn Mower

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Also greatHusqvarna Automower® iQ Series 420 iQ

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Also greatHusqvarna Automower 435X AWD Robotic Lawn Mower

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Also greatHusqvarna Automower® Heavy-Duty Boundary Wire

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Husqvarna Automower lineup: wire-free EPOS versus boundary wire

Husqvarna has made robotic mowers for decades, and the lineup shows it: names tell you the generation and the boundary method. The “iQ” series is the new wire-free family. The “X” series is the long-running premium line that uses a buried wire. “AWD” means all-wheel drive for slopes. EPOS, in the listings, is Husqvarna’s name for its satellite-based virtual boundary system, in which you draw zones in the app instead of burying cable.

One independent write-up says early launch material for the 410iQ claimed higher slope figures that Husqvarna has since revised downward, so favor the current US spec page over older material.

1. Husqvarna Automower 410iQ: Best for a modest wire-free lawn

• Wire-free EPOS navigation with app-set virtual zones
• Rated for about 1/2 acre (0.5 acre systematic, around 0.25 acre for random mowing, per one write-up)
• Handles 45% slopes inside the installation; 15% at the boundary
• 4-year warranty in the listing

Best for: a half-acre or smaller lawn that is mostly open and where you do not want to dig a wire. Skip if: your lawn has banks at the edge steeper than 15 percent, or heavy canopy that blocks the sky.

Pros

• No boundary wire to bury, repair or relocate
• Strong warranty term in the listing
• Husqvarna’s dealer and parts network behind it

Cons

• EPOS needs a good view of the sky
• Boundary slope limit is low compared with the interior rating

2. Husqvarna Automower 420iQ: Best for larger open lawns near an acre

• EPOS wire-free navigation with app-set virtual zones
• Rated for 1 acre (plus or minus 20 percent); 0.5 acre irregular capacity, 1 acre systematic
• 45% slope inside the installation; 15% at the boundary
• Marketed as GPS-guided with wire-free installation

Best for: a large, open lawn where you want the maker’s wire-free system and the capacity of one acre. Skip if: your lawn is complicated, with narrow passages and many obstacles; the irregular-lawn capacity is only half the headline figure.

Pros

• Largest wire-free rating among the Automower iQ models listed
• The same virtual-boundary system as the 410iQ
• Maker spec page states capacity for both systematic and irregular lawns

Cons

• Premium cost tier
• Mixed lawns reduce effective area to about half the rating

3. Husqvarna Automower 435X AWD: Best for steep, established lawns

• All-wheel drive with an articulated rear body
• Rated for about 0.9 acre (plus or minus 20 percent)
• 70% (about 35 degrees) inside the installation and 50% (about 27 degrees) at the boundary
• Buried boundary wire, not EPOS (the newer 435 iQ AWD uses virtual boundaries)

Best for: hilly lawns where the iQ boundary slope limit of 15 percent is too low, and trees where satellites cannot be trusted. Skip if: you do not want to install wire, or your lawn is flat enough that the iQ models suit you.

Pros

• Highest slope ratings in this guide, at both interior and boundary
• Wire boundary works under tree cover
• Established design with a long track record

Cons

• Wire needs installation, and repair if it is cut by an edger or shovel
• Virtual boundary changes mean redrawing the wire route

4. Husqvarna Automower 520H EPOS: Check the maker page before you plan

• Listed as the Husqvarna 520H EPOS Automower robotic lawn mower
• EPOS in the name points to the maker’s satellite virtual-boundary system
• I could not confirm area, slope, battery or cutting height from the sources I searched

Best for: shoppers who already know they want a larger Automower and are willing to confirm specs with a dealer. Skip if: you need numbers to compare today; rely on the 410iQ, 420iQ and 435X AWD pages instead.

Pros

• Part of the maker’s EPOS family, which skips the boundary wire
• Available through the usual dealer channel

Cons

• No verified specs here, so this is a placeholder for comparison
• Likely a higher cost tier, so confirm with a dealer

Also consider

• Husqvarna Automower 550: 1.25 acres in the listing · triple guide wires · described as commercial. It is the largest Automower in this set of listings, but the listing text is thin, so check the maker page for slope, boundary and installation requirements.
• Husqvarna Automower heavy-duty boundary wire (1,640 feet): the wire pack for wired models; see the sizing example below.
• Husqvarna Automower House for Hi-Cut models: a shelter listing; confirm it fits your model before you order.

The keyword list also names the 430X, 440iQ and 450XH/NERA. I could not find those in the listings I checked, so they are not reviewed. If you are considering one, treat the models above as a guide to what the generation difference means, then confirm current specs with the maker.

Decision matrix: which Automower for which yard

Put another way, the first question is not “how big is the lawn?” but “what does the edge of the lawn look like?” A flat edge and a clear sky make the cheaper, simpler wire-free route work. A steep edge or lots of shade pushes you toward the wired X model, even though it asks more of you on installation day.

How a wired install works on the 435X AWD

If you choose the 435X AWD, expect to spend a weekend on the wire. These steps summarize the usual process; follow the manual or let a dealer do it.

1. Sketch the lawn. Mark the charging station position, the boundary, and islands such as beds, trees and ponds.
2. Mow short. Cut the grass as low as practical so the wire sits close to the soil and pegs hold.
3. Lay the boundary wire. Keep the distance from edges, walls and beds that the manual gives for your slope, and run extra distance on steep outer edges, since a slope at the boundary needs a bigger setback.
4. Wire the islands. Run the wire around obstacles and back along itself so the loop stays closed, and keep the in and out wires together.
5. Connect the station. Place the charging station on level ground near an outdoor power outlet and attach the boundary loop with the supplied connectors.
6. Peg or bury. Peg the wire down first. After a few weeks of cutting, the grass will cover it, or you can bury it for a cleaner result.
7. Run supervised cuts. Watch the first mows for missed corners, wheel slip on wet banks and wire breaks, then adjust.

A nicked wire is the most common long-term fault with any wired robot, so keep spare connectors and mark your wire route on a sketch before edging, aerating or trenching near it.

Setting up EPOS on a 410iQ or 420iQ

EPOS setup trades shovel work for planning. Here is how a typical wire-free setup goes, subject to the maker’s instructions.

1. Choose a station spot with sky view. Avoid a corner under a tree or beside a tall wall.
2. Calibrate the reference. Follow the app to let the system establish its reference position.
3. Draw the lawn. Use the app to mark boundaries and no-go zones, keeping extra distance from steep edges because the boundary slope limit is only 15 percent.
4. Check signal in each corner. If an area keeps losing signal, shrink the zone or move the reference point, and consider whether a wired model would suit that yard better.
5. Watch the first week. Edit zones as you see how the mower behaves around trees, paths and beds.

Running costs and care for an Automower

Robotic mowers are low effort but not zero effort. These are general intervals; check the manual for your model.

The mower itself uses little electricity, but you should budget for blades, occasional wheel kits and, for wired models, extra wire and connectors. The maker sells wheel kits and skid plates for several Automower models, so parts support is a real strength of the brand.

Common Automower mistakes to avoid

• Ignoring boundary slope. Buying an iQ model for a lawn with a 25 percent edge slope ignores the 15 percent boundary limit.
• Trusting the highest area number. The rated area of the 420iQ is a systematic-lawn figure, so irregular lawns need the lower number.
• Running wire too close to edges. Place the wire the distance the manual gives, especially on slopes, so the mower can turn at the boundary.
• Skipping the dealer conversation. Installation, EPOS setup and local service are part of what you pay for with Automower.
• Leaving it out in winter. Follow the manual on storage rather than leaving the mower on the lawn.

A final sanity check before you order: confirm the rated area, the boundary method, the slope at the boundary and the warranty terms, then compare those four items across the models you are considering.

How we chose

This is research-based; we did not personally use these mowers. We searched current Husqvarna Automower listings, then used the maker’s US spec pages and independent write-ups for area, boundary method and slope. We reviewed only the models for which we found a listing, and we state clearly where we could not confirm numbers (the 520H EPOS) or where sources disagree (older launch slope claims for the 410iQ). We compared the models on area rating, boundary approach, slope inside and at the boundary, warranty and support. We did not include prices because they vary by dealer and bundle.

Husqvarna Automower buying guide: pick the boundary first

Wire-free EPOS versus buried wire

A wire is old technology that still has real advantages. It works under any tree canopy, it never loses a signal, and it can keep the mower out of a bed with no satellite lock. The downside is installation and repair: you either peg it down and let the grass grow over it, or slit it into the turf, and any later edging or aeration can cut it. EPOS saves that work and lets you redraw zones in the app, but it needs a clear view of the sky, and its boundary slope limit is lower. If your lawn is open, the iQ models are easier. If it is wooded or steep, the wired X models have a stronger case.

Slope at the boundary is the number to check

The iQ models list 45 percent slope inside the work area but only 15 percent at the boundary, which is a big difference. A lawn that ends at a retaining wall or a road bank can exceed 15 percent right at the edge. The 435X AWD lists 50 percent at the boundary, so it is a better match when the edge is steep. Measure the ground within a few feet of your planned boundary, not just the hill in the middle. Lay a 10 foot board on the slope, level it and measure the rise; a 1.5 foot rise is 15 percent.

Wire length: a worked example for the 435X AWD

Suppose your lawn is 0.9 acre, or 39,204 square feet. If it were a square, each side would be about 198 feet and the perimeter about 792 feet. A longer rectangle of 100 by 392 feet has the same area but a perimeter of 984 feet. Add the charging-station loop and any guide wires, and you may need 1,000 to 1,200 feet in total. The heavy-duty wire in the listing is 1,640 feet, which would cover that with margin, while a 50 meter (about 164 foot) pack would only cover a small fraction. Always check the maker’s guidance on wire needs for your model, and keep spare connectors.

Rated area and real mowing time

A rating of “plus or minus 20 percent” means the maker expects the real capacity to depend on the lawn. Simple, open grass reaches the high end. A lawn with islands, narrow passes and many obstacles sits at the low end. Husqvarna’s own 420iQ page lists 0.5 acre for irregular lawns and 1 acre for systematic mowing, which is a useful reminder. If your lawn is complicated, plan on the lower number.

Dealer installation and support

Automowers are commonly sold through dealers who can install wire, set up EPOS and service the mower. That is a real advantage if you do not want to do the install yourself. Ask a dealer about installation fees, what the warranty covers, whether the mower is serviced locally and how long parts take. The 410iQ listing mentions a 4-year warranty; confirm how it applies to the product you receive.

Winter, theft and safety

Follow the manual for winter storage, which usually means cleaning the mower, charging the battery to the stated level and storing it indoors. Set a PIN and use any theft protection the app offers. Keep children and pets off the lawn while the blade is running, and never lift a running mower; use the stop button as the manual directs.

Frequently Asked Questions

What does iQ mean on a Husqvarna Automower?

It marks the wire-free EPOS family, such as the 410iQ and 420iQ, where you draw virtual zones in the app instead of burying wire. Check the maker page for the exact features of each model.

Which Husqvarna Automower is best for slopes?

The 435X AWD, which lists 70 percent inside the work area and 50 percent at the boundary, compared with 45 percent and 15 percent for the iQ models.

Do Husqvarna Automowers need boundary wire?

The 435X AWD does. The 410iQ and 420iQ use EPOS virtual boundaries, so they do not need wire, but they need a good view of the sky.

How big a lawn can a Husqvarna Automower 420iQ handle?

The maker lists about 1 acre, plus or minus 20 percent, for systematic mowing and 0.5 acre for irregular lawns. Use the lower figure if your lawn is cluttered.

Is the Automower 410iQ big enough for half an acre?

It is rated for about 0.5 acre with systematic mowing. If your lawn is irregular, one source puts its capacity near 0.25 acre, so consider the 420iQ.

Where can I buy a Husqvarna Automower?

Through dealers and some retailers. Dealer purchase usually brings installation help and local service, which can matter more than the sticker price.

What about the 430X, 440iQ and 450XH?

They were not in the listings I could verify. Check the maker site and a dealer for current availability and specs.

Which Husqvarna Automower should you buy?

Choose the 410iQ for a half-acre, open lawn without wire, the 420iQ for open ground near an acre, and the 435X AWD when slopes or trees decide the question. Treat the 520H EPOS and 550 as items to confirm with a dealer. Before you buy, measure your boundary slope, estimate wire if you need it and ask about installation and service.

Sources

• Husqvarna US product and specification pages (Automower 420 iQ and related models)
• Current retail listing text for each model
• Independent robot mower write-ups and specification databases

Last updated: November 2026