Husqvarna Automower 430X NERA vs 450X NERA: Easy Guide

8 min read by Tyler Novak Updated November 11, 2026

The main difference in the Husqvarna Automower 430X NERA vs 450X NERA comparison is the rated lawn size: 3,200 m² for the 430X and 5,000 m² for the 450X. Both official product pages list the same slope limits, 25% at the boundary and 50% inside the installation. As of 2026-11-10, Husqvarna’s UK pages label the 430X as discontinued and the 450X as currently available, so availability matters as much as the specs.

The short answer

Lawn size: the 430X is rated for 3,200 m² and the 450X for 5,000 m², both marked ±20 by Husqvarna.
Slope and cutting width: identical on both, with 24 cm cutting width and 25% and 50% slope limits.
Noise and runtime: the 450X is rated 58 dB(A) and 145 minutes typical mow time, against 56 dB(A) and 100 minutes for the 430X.
Availability: the 430X is labeled discontinued, and Husqvarna names the 430V and 450V NERA as replacements.
Our reading: for a lawn above 3,200 m², only the 450X is rated for it. Below that, the choice depends on stock and the features you need.

Husqvarna Automower 430X NERA vs 450X NERA specifications

The table uses the figures printed on Husqvarna’s UK product and support pages. Where a page does not give a value, the table says so instead of filling the gap from another source.

Specification	430X NERA	450X NERA
Working area capacity (±20)	3,200 m²	5,000 m²
Maximum slope at boundary	25%	25%
Maximum slope inside installation	50%	50%
Cutting width	24 cm	24 cm
Cutting height range	Not stated	20 mm to 60 mm
Weight	14.6 kg	15 kg
Sound level (perceived)	56 dB(A)	58 dB(A)
Maximum active time	24 h	24 h
Typical mow time on one charge	100 min	145 min
Battery	Not stated	Lithium Ion, 7.5 Ah
Connectivity	Not stated on the product page	Bluetooth, cellular, Wi-Fi
Boundary type	Not stated	Physical wire, with an optional EPOS plug-in for wire-free installation
Status on Husqvarna’s UK pages	Labeled discontinued	Currently available

In the Husqvarna Automower 430X NERA vs 450X NERA specs, both mowers share the same cutting width and slope ratings, so the spec sheet gives few reasons to choose between them on those points. The differences cluster around lawn size, runtime, connectivity and whether the model is still sold.

Rated working area: the main difference

The 430X is rated for a working area of 3,200 m², and the 450X for 5,000 m². Husqvarna marks both figures with a ±20 tolerance, but the pages do not explain what that tolerance covers, so treat the numbers as rated capacities rather than exact limits. Our coverage rating explainer covers how to read them.

Measure your lawn before comparing. A lawn well under 3,200 m² fits either rating. A lawn between 3,200 and 5,000 m² fits only the 450X on paper. Husqvarna’s own product pages do not give separate figures for irregular and systematic lawn shapes for either model, so a complex or narrow lawn may need more margin than the headline number suggests.

Three robotic lawn mowers parked side by side on a striped green lawn — Three robotic lawn mowers parked side by side (general example, not the NERA models).

Slope, cutting width and cutting height

Both models are rated for a maximum slope of 25% at the boundary and 50% inside the installation. Husqvarna does not say how these limits apply to a specific lawn, so the figures are useful for comparing the two models rather than predicting how a steep yard will perform; see how robot mower slope ratings work for context.

Both mowers use a 24 cm cutting width. Only the 450X page gives a cutting height range, 20 mm to 60 mm, so the 430X’s range is not confirmed by Husqvarna’s pages. If you need a specific height, check the current manual for the model you are considering before you buy.

Our reading is that a sloped perimeter is the first place to check, because the lower boundary figure of 25% applies where the mower meets the edge of the lawn, not the steeper figure inside.

Noise, weight and runtime

The 430X is rated at 56 dB(A) and the 450X at 58 dB(A), both as perceived sound level. The gap is small, but it is the only noise rating Husqvarna gives for each model, so it is the number to use if the mower will run near neighbors or during early mornings (see how loud robot mowers are).

The 450X weighs 15 kg and the 430X 14.6 kg. The 450X page lists a typical mow time of 145 minutes on one charge and a mean energy use of 18 kWh per month at maximum use. The 430X page lists 100 minutes on one charge. Both are rated for a maximum active time of 24 hours. These are typical values from the manufacturer, and real runtime depends on lawn shape, grass growth and how often the mower runs.

Robotic lawn mower on its dock beside a garden bed, bench and fence — A robotic mower docked at the edge of a garden bed; typical mow time is quoted per charge.

Connectivity and wire-free installation

The 450X product page lists Bluetooth, cellular and Wi-Fi. The 430X product and support pages do not list connection types, though both mention smart home integration and firmware updates over the air. If app control over a mobile network matters to you, the 450X is the only model whose page confirms cellular.

Husqvarna’s NERA overview page says wire-free mowers create virtual boundaries by mapping the lawn in the Automower Connect app. It also says they need an open sky view to receive satellite signals and an internet connection across the whole lawn. A physical boundary wire is the alternative installation method (our wire-free versus boundary wire comparison weighs the two), and the 450X page lists an EPOS plug-in accessory for wire-free use that is not included in the box.

Our reading is that a lawn shaded by tall trees or a house may fail the sky-view condition, so check that before choosing the wire-free option on either model.

Availability: the 430X is labeled discontinued

As of 2026-11-10, Husqvarna’s UK product and support pages for the 430X show a “Discontinued” label and link to other models without naming a direct replacement. The 450X support page shows the model as currently available.

Heads up

Husqvarna’s October 2025 announcement says the 430V and 450V NERA replace the 430X and 450X NERA, with area ratings of 4,800 m² for the 430V and 7,500 m² for the 450V. The announcement’s body text gives 7,500 m² for both new models, so check the spec sheet for the exact model you are buying.

Prices are not part of this comparison, because the fetched Husqvarna pages do not show them and retailer prices change by date and country. Compare current offers from a retailer in your country before deciding, and note that these are Husqvarna UK pages, so US availability and ratings may differ. For another 450X NERA matchup, see our Mammotion Luba 3 AWD vs Husqvarna Automower 450X NERA comparison.

Which model suits which lawn

For the Husqvarna Automower 430X NERA vs 450X NERA choice, the rated area is the clearest dividing line. Our reading is that a lawn above 3,200 m² points to the 450X, since it is the only one of the two rated for that size. Below 3,200 m², the rated area does not separate the two, so the choice comes down to the features you want and whether the model is still on sale.

For a lawn above 5,000 m², neither rating covers the area, and Husqvarna’s announcement lists the 450V as rated up to 7,500 m². Confirm that replacement model’s specs before buying, since the announcement’s figures are not fully consistent.

What to check before you buy

Lawn area: measure the lawn and compare it with the rated area of each model.
Steepest zone: check the slope figure at the boundary, since that is where the mower meets the edge of the lawn.
Availability: confirm the model is still sold in your country, since the 430X is labeled discontinued.
Installation method: decide between a physical wire and wire-free mapping, and check the sky view and internet coverage if you pick wire-free.
Noise and runtime: compare the 56 and 58 dB(A) ratings and the typical mow times against your schedule.

Frequently asked questions

Which is better, the 430X or the 450X?

In the Husqvarna Automower 430X NERA vs 450X NERA decision, neither is better across the board. The 450X is rated for a larger lawn, up to 5,000 m² against 3,200 m², and lists cellular connectivity and a longer typical mow time. The 430X is labeled discontinued on Husqvarna’s pages, so the choice also depends on what is still available.

Do the 430X and 450X have the same slope rating?

Yes. Husqvarna’s product pages list 25% at the boundary and 50% inside the installation for both models. Those limits describe the maximum slope each mower is rated for, not how it will perform on a particular yard.

Is the Husqvarna Automower 430X NERA still sold?

Husqvarna’s UK product and support pages label the 430X NERA as discontinued as of 2026-11-10 and do not name a replacement on those pages. Check a current retailer or the Husqvarna site for your country before assuming it is available.

What replaces the 430X and 450X NERA?

Husqvarna’s news announcement, published 16 October 2025, says the 430V and 450V NERA replace the 430X and 450X NERA. It gives area ratings of 4,800 m² for the 430V and 7,500 m² for the 450V, though its body text gives 7,500 m² for both.

Sources

Automower 430X NERA (Husqvarna UK product page): rated area, slope, cutting width, weight, sound level, discontinued label.
Automower 450X NERA (Husqvarna UK product page): rated area, slope, connectivity, boundary type, battery, sound level.
Automower 430X NERA support page (Husqvarna UK): discontinued status and smart home integration.
Automower 450X NERA support page (Husqvarna UK): cutting height range, typical mow time, energy use, current availability.
Automower NERA overview (Husqvarna UK): virtual boundaries, sky view and internet requirements.
Husqvarna introduces 4 new mowers to its Automower NERA range (Husqvarna UK news): 430V and 450V replacement and area ratings.