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EUREKA J12 Ultra Review | 118 Data compared

Avg. price in UK: ~£700
Avg. price in US: ~$920
Max suction power: 5000 Pa
Runtime: 150 min
Dustbin capacity: 350 mL
Max threshold height: 18 mm

EUREKA J12 Ultra review. Compare 118 technical specifications and user reviews to see how this product ranks in the Robot Vacuums category and whether it is worth buying.

8.2

Excellent

8.2

Excellent

?

6.1
Mopping
Score components:
35.0%
7.6
Mopping system type
25.0%
4.0
Mop lifting
20.0%
4.0
Auto water refill
20.0%
?
Water tank capacity
7.9
Pet homes
Score components:
35.0%
10
Anti-tangle technology
30.0%
6.0
Max suction power
20.0%
10
Carpet boost
15.0%
4.1
Dustbin capacity
9.2
Navigation and mapping
Score components:
30.0%
8.5
Primary navigation technology
30.0%
10
Obstacle avoidance technology
20.0%
?
Object recognition
20.0%
10
Real-time mapping

Best prices in UK

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Verdict

The Eureka J12 Ultra is an all-in-one robot vacuum and mop featuring 5,000Pa suction power, a 5,200mAh battery providing up to 150 minutes of runtime, and a dual-rotary mopping system operating at 200 RPM with 7N of downward pressure. Its advanced DuoDetect AI 3D obstacle avoidance and LiDAR navigation allow for precise movement across areas up to 300m², while the multifunctional docking station automates maintenance by self-emptying into a 3L dust bag, washing mop pads with clean water, and drying them with 55°C hot air. Main pros include its highly efficient self-cleaning station, effective scrubbing performance on stubborn stains, and robust pet-friendly features like an anti-tangle roller brush. However, notable cons include its inability to automatically lift mop pads when encountering carpets, necessitating manual mode selection or removal of pads to keep rugs dry, and a tendency for the dual side brushes to occasionally scatter debris on hard floors during edge cleaning.

Technical Specifications of robot vacuum EUREKA J12 Ultra

Overall score

8.2

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Popularity

What it is: An indicator based on the number of reviews received by the robot vacuum.

When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.

Cleaning

8.1

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Max suction power

What it is: Maximum suction power is the highest pressure the vacuum motor is rated to produce, measured in pascals.

When it matters: Higher figures can help lift embedded debris from carpet, but brush design and airflow also determine real cleaning performance.

Importance: HIGH

N. of suction power levels

What it is: The number of suction levels shows how many power settings can be selected.

When it matters: More levels give finer control over noise, battery use and cleaning strength on different floors.

Importance: MEDIUM

Motor type

What it is: Motor type identifies whether the suction motor uses a brushed or brushless design.

When it matters: Brushless motors generally offer better efficiency and durability, although complete airflow design still determines performance.

Importance: LOW

Power

What it is: Power is the electrical input rating of the robot or its charging system.

When it matters: It describes energy demand, but it should not be treated as a direct measure of suction or floor-cleaning ability.

Importance: LOW

?

Cleaning modes

What it is: Cleaning modes are the distinct automatic or targeted cleaning programs available on the robot.

When it matters: A wider choice makes it easier to match cleaning behavior to rooms, spills, edges or quiet periods.

Importance: MEDIUM

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Mopping

8.0

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Mopping capability

What it is: Mopping capability means the robot can wipe hard floors with a damp pad or active mop system.

When it matters: It is useful for fine dust and light marks, but it does not automatically mean the robot can replace deep manual mopping.

Importance: MEDIUM

Mopping system type

What it is: The mopping system type describes how the robot applies motion and pressure to its mop, such as a static pad, vibrating pad, rotating pads or roller.

When it matters: Active systems generally scrub dried marks better, while pad lifting and dock washing determine how practical they are on mixed floors.

Importance: HIGH

Mop pad type

What it is: The pad shape and attachment mechanism used by the mopping system.

When it matters: It affects floor contact, edge reach, replacement availability and whether the pads can be washed easily.

Importance: LOW

circular

Mop pad material

What it is: Mop pad material is the fabric or fibre used to wipe and absorb dirt from the floor.

When it matters: It influences absorption, scrubbing action, durability and how easily the pad releases dirt when washed.

Importance: LOW

microfiber

Mop pressure

What it is: Mop pressure is the downward force the mopping system applies to the floor.

When it matters: More controlled pressure can improve removal of dried marks, although pad motion and moisture delivery also matter.

Importance: LOW

?

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Navigation

9.6

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Primary navigation technology

What it is: The primary navigation technology is the main sensor system the robot uses to understand its position and plan a route.

When it matters: It affects route efficiency, coverage and how reliably the robot returns to its dock, especially in larger or more complex homes.

Importance: HIGH

Mapping capability

What it is: Mapping capability lets the robot create a floor plan instead of cleaning only from moment-to-moment sensor reactions.

When it matters: A saved map is important for room selection, no-go zones and predictable coverage.

Importance: MEDIUM

Real-time mapping

What it is: Real-time mapping updates the floor plan and the robot's route while a cleaning run is in progress.

When it matters: It helps you follow progress, spot missed areas and see where the robot is if it becomes stuck.

Importance: LOW

Multiple map storage

What it is: Multiple map storage keeps separate floor plans for more than one level or cleaning area.

When it matters: It is useful in multi-storey homes because the robot does not need to rebuild the map each time it changes floors.

Importance: LOW

Map editing

What it is: Map editing lets you divide, merge, name and adjust rooms in the app.

When it matters: Accurate room boundaries make room-by-room schedules and targeted cleaning easier to use.

Importance: LOW

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Smart Features

8.9

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App control

What it is: App control lets you operate and configure the robot from a smartphone application.

When it matters: It is needed for maps, room selection, schedules and many advanced settings on modern robot vacuums.

Importance: LOW

App name

What it is: App name identifies the manufacturer's mobile application used to control the robot.

When it matters: It helps you check phone compatibility, account requirements and user feedback for the correct app before buying.

Importance: LOW

eureka robot

Wi-Fi connectivity

What it is: Wi-Fi connectivity links the robot to its app and cloud services through the home network.

When it matters: It enables remote control and updates, but setup quality depends on router compatibility and signal coverage.

Importance: LOW

Supported Wi-Fi bands

What it is: Supported Wi-Fi bands identify the wireless frequencies the robot can use, commonly 2.4 GHz and sometimes 5 GHz.

When it matters: Band support matters during setup because many robot vacuums connect only to a 2.4 GHz network.

Importance: LOW

2.4 GHz

Bluetooth connectivity

What it is: Bluetooth connectivity provides a short-range wireless link, often used during initial setup.

When it matters: It can simplify pairing but usually does not replace Wi-Fi for remote app control.

Importance: LOW

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Battery

7.2

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Battery capacity

What it is: Battery capacity is the amount of electrical charge the battery can store, measured in milliamp-hours.

When it matters: More capacity can support longer cleaning runs, but motor power, mopping and navigation also affect actual runtime.

Importance: MEDIUM

Battery type

What it is: Battery type identifies the battery chemistry used by the robot.

When it matters: It affects weight, service life and charging behavior, with lithium-ion now being the common modern design.

Importance: LOW

Li-ion

Battery voltage

What it is: Battery voltage is the nominal electrical voltage of the robot's battery pack.

When it matters: It is mainly useful for checking replacement-battery compatibility and does not by itself indicate runtime.

Importance: LOW

14.4 V

Runtime

What it is: Runtime is how long the robot is rated to clean on one charge under the standardized test mode.

When it matters: Longer runtime matters on large floors, while recharge-and-resume can compensate for a smaller battery.

Importance: MEDIUM

Recharge and resume

What it is: Recharge and resume sends the robot back to charge and then returns it to the unfinished part of the map.

When it matters: It allows large cleaning jobs to finish without manual intervention when one battery charge is not enough.

Importance: LOW

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Design

6.1

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Shape

What it is: The robot's body outline, most commonly round or D-shaped.

When it matters: Shape influences corner reach and manoeuvring, although brush placement and route planning are equally important.

Importance: LOW

round

Height

What it is: Height is the vertical clearance required by the robot.

When it matters: A lower body can clean under more sofas, beds and cabinets, but measure the furniture gap before relying on it.

Importance: LOW

107.5 mm

Width

What it is: Width is the side-to-side size of the robot.

When it matters: It determines whether the robot can pass between chair legs, furniture and other narrow spaces.

Importance: LOW

350 mm

Length

What it is: Length is the front-to-back size of the robot.

When it matters: Together with width and shape, it affects turning space and access around closely placed furniture.

Importance: LOW

350 mm

Weight

What it is: Weight is the mass of the robot itself, excluding its dock.

When it matters: A lighter robot is easier to carry between floors, while weight has little direct connection to cleaning quality.

Importance: LOW

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EUREKA J12 Ultra vs the average robot vacuum

Why is EUREKA J12 Ultra better than the average robot vacuum?

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Prevents hair tangles
EUREKA J12 Ultra prevents hair tangles, while the average robot vacuum has no anti-tangle system.
What it is: Anti-tangle technology is designed to prevent or remove hair wrapped around the main brush and axles.
When it matters: It is especially valuable in homes with pets or long hair because it reduces manual brush cleaning.
Importance: MEDIUM
EUREKA J12 Ultra prevents hair tangles, while the average robot vacuum has no anti-tangle system.
Better mopping system
EUREKA J12 Ultra uses rotating pads for mopping, while the average robot vacuum uses static pad.
What it is: The mopping system type describes how the robot applies motion and pressure to its mop, such as a static pad, vibrating pad, rotating pads or roller.
When it matters: Active systems generally scrub dried marks better, while pad lifting and dock washing determine how practical they are on mixed floors.
Importance: HIGH
EUREKA J12 Ultra uses rotating pads for mopping, while the average robot vacuum uses static pad.rotating pads vs static pad
Cleans its mop automatically at the dock
EUREKA J12 Ultra cleans its mop automatically at the dock, while the average robot vacuum does not clean its mop automatically at the dock.
What it is: A self-cleaning dock washes its mop tray, mop pads or both with limited manual work.
When it matters: It reduces hands-on maintenance, but the dirty-water tank and dock tray still need periodic cleaning.
Importance: LOW
EUREKA J12 Ultra cleans its mop automatically at the dock, while the average robot vacuum does not clean its mop automatically at the dock.
20 rpm faster mop rotation
EUREKA J12 Ultra spins its mops at 200 rpm, compared with 180 rpm for the average robot vacuum.
What it is: Mop rotation speed is how quickly rotating mop pads turn.
When it matters: Higher speed can increase scrubbing action, but cleaning solution, pressure and pad condition also affect the result.
Importance: MEDIUM
EUREKA J12 Ultra spins its mops at 200 rpm, compared with 180 rpm for the average robot vacuum.200 rpm vs 180 rpm
Dries its mop automatically at the dock
EUREKA J12 Ultra dries its mop automatically at the dock, while the average robot vacuum does not dry its mop automatically.
What it is: Automatic mop drying uses air or heat to dry the pads after washing.
When it matters: It helps limit odour and microbial growth when damp pads would otherwise remain on the dock.
Importance: LOW
EUREKA J12 Ultra dries its mop automatically at the dock, while the average robot vacuum does not dry its mop automatically.
0.97 % higher filtration efficiency
EUREKA J12 Ultra has a higher filtration efficiency than the average robot vacuum (100% vs 99%).
What it is: Filter efficiency is the certified percentage of particles the filter can retain under its specified test conditions.
When it matters: It matters for fine dust and allergens, although leakage around the filter can reduce whole-machine performance.
Importance: MEDIUM
EUREKA J12 Ultra has a higher filtration efficiency than the average robot vacuum (100% vs 99%).99.97 % vs 99 %
120 m² more cleaning coverage
EUREKA J12 Ultra covers up to 300 m² per charge, compared with 180 m² for the average robot vacuum.
What it is: Maximum cleaning area is the largest floor area the robot is rated to cover in one cleaning task.
When it matters: It helps indicate whether the robot suits a large layout, although obstacles, power mode and mopping can reduce coverage.
Importance: LOW
EUREKA J12 Ultra covers up to 300 m² per charge, compared with 180 m² for the average robot vacuum.300 m² vs 180 m²
2,000 mAh more battery capacity
EUREKA J12 Ultra has a battery capacity of 5,200 mAh, compared with 3,200 mAh for the average robot vacuum.
What it is: Battery capacity is the amount of electrical charge the battery can store, measured in milliamp-hours.
When it matters: More capacity can support longer cleaning runs, but motor power, mopping and navigation also affect actual runtime.
Importance: MEDIUM
EUREKA J12 Ultra has a battery capacity of 5,200 mAh, compared with 3,200 mAh for the average robot vacuum.5200 mAh vs 3200 mAh
120 m² more cleaning coverage
EUREKA J12 Ultra covers up to 300 m² per charge, compared with 180 m² for the average robot vacuum.
2,000 mAh more battery capacity
EUREKA J12 Ultra has a battery capacity of 5,200 mAh, compared with 3,200 mAh for the average robot vacuum.
Newer model
EUREKA J12 Ultra was released in 2024, compared with 2023 for the average robot vacuum.
Includes a child lock
EUREKA J12 Ultra includes a child lock, while the average robot vacuum has no child lock.
11 more supported languages
EUREKA J12 Ultra supports 28 languages, compared with 17 for the average robot vacuum.
Prevents hair tangles
EUREKA J12 Ultra prevents hair tangles, while the average robot vacuum has no anti-tangle system.
0.97 % higher filtration efficiency
EUREKA J12 Ultra has a higher filtration efficiency than the average robot vacuum (100% vs 99%).
1,000 Pa stronger suction
EUREKA J12 Ultra delivers 5,000 Pa, compared with 4,000 Pa for the average robot vacuum.
Better mopping system
EUREKA J12 Ultra uses rotating pads for mopping, while the average robot vacuum uses static pad.
Cleans its mop automatically at the dock
EUREKA J12 Ultra cleans its mop automatically at the dock, while the average robot vacuum does not clean its mop automatically at the dock.
20 rpm faster mop rotation
EUREKA J12 Ultra spins its mops at 200 rpm, compared with 180 rpm for the average robot vacuum.
Dries its mop automatically at the dock
EUREKA J12 Ultra dries its mop automatically at the dock, while the average robot vacuum does not dry its mop automatically.
1,100 mL more dirty-water capacity
2 mL more dirty-water capacity: EUREKA J12 Ultra compared with the average robot vacuum.
Dispenses cleaning solution automatically
EUREKA J12 Ultra dispenses cleaning solution automatically, while the average robot vacuum does not dispense cleaning solution automatically.
Supports cleaning solution
EUREKA J12 Ultra supports cleaning solution, while the average robot vacuum does not support cleaning solution.

Why is EUREKA J12 Ultra worse than the average robot vacuum?

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1.5 h slower charging
EUREKA J12 Ultra recharges in 6 h; the average robot vacuum takes 4.5 h.
3 dB louder operation
EUREKA J12 Ultra produces 68 dB of noise, compared with 65 dB for the average robot vacuum.
2 mm less threshold clearance
EUREKA J12 Ultra climbs thresholds up to 18 mm, compared with 20 mm for the average robot vacuum.
50 mL smaller dustbin
EUREKA J12 Ultra has a dustbin capacity of 350 mL, compared with 400 mL for the average robot vacuum.
2 mm less threshold clearance
EUREKA J12 Ultra climbs thresholds up to 18 mm, compared with 20 mm for the average robot vacuum.
What it is: Maximum threshold height is the tallest doorway strip or floor transition the robot is rated to climb.
When it matters: It determines whether the robot can move between rooms without becoming stuck at raised thresholds.
Importance: MEDIUM
EUREKA J12 Ultra climbs thresholds up to 18 mm, compared with 20 mm for the average robot vacuum.18 mm vs 20 mm
1.5 h slower charging
EUREKA J12 Ultra recharges in 6 h; the average robot vacuum takes 4.5 h.
What it is: Charging time is the approximate time required to refill the battery from low charge.
When it matters: A shorter charge is useful when the robot must resume an unfinished large cleaning job.
Importance: LOW
EUREKA J12 Ultra recharges in 6 h; the average robot vacuum takes 4.5 h.6 h vs 4.5 h
3 dB louder operation
EUREKA J12 Ultra produces 68 dB of noise, compared with 65 dB for the average robot vacuum.
What it is: Noise level range shows the sound produced across the robot's operating modes.
When it matters: Lower noise is helpful for cleaning while people work, talk, sleep or remain at home with noise-sensitive pets.
Importance: LOW
EUREKA J12 Ultra produces 68 dB of noise, compared with 65 dB for the average robot vacuum.68 dB vs 65 dB
2.69x more expensive
EUREKA J12 Ultra is more expensive than the average robot vacuum (£700 vs £260).
EUREKA J12 Ultra is more expensive than the average robot vacuum (£700 vs £260).£700 vs £260
50 mL smaller dustbin
EUREKA J12 Ultra has a dustbin capacity of 350 mL, compared with 400 mL for the average robot vacuum.
What it is: Dustbin capacity is the amount of dry debris the bin inside the robot can hold.
When it matters: A larger bin needs emptying less often, which matters in homes with pets unless an auto-empty dock is included.
Importance: MEDIUM
EUREKA J12 Ultra has a dustbin capacity of 350 mL, compared with 400 mL for the average robot vacuum.350 mL vs 400 mL
5.05x less popular
EUREKA J12 Ultra is less popular than the average robot vacuum (1.00 vs 5.053).
What it is: An indicator based on the number of reviews received by the robot vacuum.
When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.
EUREKA J12 Ultra is less popular than the average robot vacuum (1.00 vs 5.053).1 vs 5.05

Graphic comparison of EUREKA J12 Ultra and other robot vacuums

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Third-party reviews

What customers like about EUREKA J12 Ultra?

Powerful 5000Pa suction that effectively handles pet hair, crumbs, and fine dirt on both hard floors and carpets.
Efficient dual-rotary spinning mops that apply 7N downward pressure to scrub away stubborn, dried stains.
Excellent obstacle avoidance utilizing LiDAR and 3D dual-laser sensors to navigate accurately, even in dark rooms.
Comprehensive all-in-one base station that automatically empties dust, washes the mops, and dries them with 55°C hot air to prevent mold and odors.
Large-capacity water tanks (4.7L clean / 4.6L dirty) and a 3L dust bag that drastically reduce the frequency of manual maintenance.
Good build quality and a sleek, sturdy design that fits well into home decor without feeling cheap.
Clever 'bum-moving' edge-cleaning behavior that helps the mops reach closer to room corners and borders.

What customers dislike about EUREKA J12 Ultra?

Software and app glitches, such as intermittent trouble saving custom zone cleaning settings or failing to follow the preferred room sequence.
Occasional mapping or navigation bugs where the robot prematurely ends a cycle, falsely claiming cleaning is complete after covering only a small area.
Inability to automatically lift the mop pads when transitioning onto carpets, requiring users to rely on specific app modes (like 'vacuum first, then mop') or manually detach the pads.
The front side rotating brushes can occasionally scatter loose debris into previously cleaned areas rather than pulling it directly into the suction path.
The base station uses cold water for washing the mop pads, unlike newer flagship models that utilize hot water.

Expert reviews

community.heyupnow.com

28/08/2024

Summary of the review

Review of the Eureka J12 Ultra - Heyup Community

The Eureka J12 Ultra is praised for its sleek, quiet operation, large water tanks, and effective mop cleaning, yet its performance is severely hampered by critical software issues, including unreliable carpet detection, inconsistent navigation, and a tendency to forget saved zones. While the machine handles pet hair well and features a robust self-cleaning station, users have noted that the front rotating brush holder is prone to detaching.

community.heyupnow.com

29/08/2024

Summary of the review

Eureka J12 Ultra Vacuum - Unboxing and review - Heyup Community

The Heyup Community review highlights the Eureka J12 Ultra as a robustly built hybrid vacuum, featuring strong 5000Pa suction, effective dual-rotary mopping, and a fully automated base station for, hot air mop drying, and up to 75 days of dust storage. Despite these strengths, the unit faces significant software-related drawbacks, including unreliable carpet detection, inconsistent scheduling, and flawed obstacle avoidance, as detailed in the review.

connect.de

12. Mai 2024

Summary of the review

Eureka J12 Ultra review: Robot vacuum and mop with self-cleaning base

The Eureka J12 Ultra is a highly autonomous vacuum-and-mop robot with an all-in-one dock that offers reliable 5,000 Pa suction and effective mopping with 7N pressure. It excels with a self-cleaning station that washes and dries pads at 55°C to prevent odors, though the system suffers from a large footprint,, occasional debris scattering by side brushes, and an inability to automatically lift mopping pads on carpets, requiring app-based workarounds.

tomsguide.fr

14/05/2024

Summary of the review

Eureka J12 Ultra Review: The robot vacuum that masters both mopping and floor cleanliness

The Tom's Guide review positions the Eureka J12 Ultra as a competitive mid-range robot vacuum offering excellent value through its robust scrubbing capabilities, effective DuoDetect AI 3D obstacle avoidance, and a comprehensive all-in-one docking station with 55°C hot air mop drying. While delivering strong performance, key limitations include a bulky design, moderate 5000Pa suction power on thick rugs, occasional debris scattering, and the inability to automatically lift the mops to avoid carpets.

it-connect.fr

18/05/2024

Summary of the review

Eureka J12 Ultra Review: Full and Detailed Analysis - IT-Connect

According to IT-Connect, the Eureka J12 Ultra is a highly capable, cost-effective all-in-one robot vacuum and mop featuring 5,000 Pa suction and a base station that automates cleaning, mop washing, and 55°C hot air drying. While praised for its effective 3D obstacle avoidance and deep cleaning, the review notes a key drawback: the lack of automatic mop lifting, requiring users to manually remove mop pads to prevent carpet wetting. The 4.7L base station is also described as bulky, with actual battery life falling slightly short of the 150-minute advertised maximum.

journaldugeek.com

11/07/2024

Summary of the review

Eureka J12 Ultra Vacuum Review: Versatile but Needs Major Improvement

The Eureka J12 Ultra is a versatile, competitively priced robot vacuum and mop featuring an efficient all-in-one docking station with 55°C hot air drying, effective dual-spinning mops, and precise dual-LiDAR 3D AI navigation. However, the unit is limited by a 5000Pa suction power that struggles on thick carpets, a lack of automatic mop lifting, and a less refined app compared to competitors. For a full review, visit IT-Connect.

muycomputer.com

07/05/2024

Summary of the review

Eureka J12 Ultra Robot Vacuum Review: Large-Scale Speed

The MuyComputer review highlights the Eureka J12 Ultra as an efficient, highly automated cleaning assistant featuring excellent LiDAR navigation alongside Duo Detect AI 3D obstacle avoidance and strong dual 200 RPM rotating mop performance. However, drawbacks include a 5,000Pa suction power that trails competing premium flagships, the absence of an onboard water tank on the robot itself, and an inability to mechanically lift the mop pads over carpets.

corriere.it

30/04/2026

Summary of the review

Eureka J12 Ultra Review: vacuums, mops, and is easy to use

According to a Corriere della Sera review, the Eureka J12 Ultra is a user-friendly robot vacuum and mop offering high-end automation, including a 3D DuoDetect AI obstacle avoidance system and a multifunctional station that automatically empties, washes, and dries mops with 55°C air. Pros include an easy setup and efficient navigation, while cons involve the inability to lift mop pads on carpets, a bulky station, and a less premium, plastic-heavy construction compared to top-tier competitors.

smartworld.it

11/05/2024

Summary of the review

Eureka J12 Ultra Review: What Will Be the Right Price?

The Eureka J12 Ultra is a mid-range robot vacuum with a robust 5,200 mAh battery, a comprehensive 3L self-emptying base, and effective 3D Duo Detect AI obstacle avoidance. While featuring 55°C warm-air mop drying, the unit faces limitations such as lacking an internal water tank, using room-temperature water for washing pads, and an inability to lift mop pads, forcing it to avoid carpets during cleaning. According to SmartWorld, the device's high launch price makes it less competitive against alternatives, recommending it primarily when discounted below €600.

tuttoandroid.net

21/05/2024

Summary of the review

Eureka J12 Ultra review: a robot vacuum and mop that feels premium at a low price

The TuttoAndroid review highlights the Eureka J12 Ultra as a high-value, automated robot vacuum and mop, praising its simple assembly, excellent navigation, and the all-in-one base station that washes and dries the dual rotating mops with 55°C hot air. While the unit delivers strong cleaning performance, a significant drawback is the lack of automatic mop lifting, requiring manual removal of the pads to prevent wetting carpets. Additionally, the overall build quality is considered functional but slightly less premium than higher-end competitors.

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