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iRobot Roomba Plus 405 Combo

Ratings at the stores

4.1 out of 5. 47 reviews from 3 stores in 2 countries

  • Coolblue NL 4.0 (4.0 out of 5) · 22 reviews Read Nov 14
  • Saturn DE 4.0 (4.0 out of 5) · 21 reviews Read Nov 14
  • Kaufland.nl NL 5.0 (5.0 out of 5) · 4 reviews Read Nov 14

How we combine them. Each store counts once, with its biggest listing of this model, and its rating weighs by its number of reviews.

Not counted: Amazon (its terms do not allow us to show its ratings).
iRobot Roomba Plus 405 Combo (white)

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Which robot is right for your home? Find out in 7 questions →

About this model

The iRobot Roomba Plus 405 Combo is the entry model of the refreshed Roomba line: lidar navigation instead of a camera, two spinning mop pads that lift on carpet and a station that empties the bin into a 75-day bag, washes and dries the pads and refills the water tank. Vacuum Wars bought one and tested it for weeks, with high hopes and a mixed verdict: the robot did not make the site's top 20, nor even its top 60.

Learn more →

Who it suits

Good for

  • Rugs and carpet: lifts the mop 0.4 in (10 mm)
  • Mopping: station washes the mop
  • Upkeep: all-in-one station

Not for

  • Pets: no anti-tangle brush
  • Low furniture: 4.2 in (10.6 cm) tall
  • Clutter on the floor: no 3D sensor or camera to see small items

From the facts the maker states, by the rules of our advisor.

On this page

  1. OverviewRank 94 of 94
  2. Stores
  3. Price historylast 90 days, no drop seen yet
  4. What to expect1 test, 1 min read
  5. Specifications43 facts
  6. Our scorescore 5.7 out of 10
  7. Ratings4.1 out of 5, 47 reviews
  8. Questions5 questions
iRobot Roomba Plus 405 Combo (white)

Before you buy, compare it with 2 recommended alternatives ?

Green is the best of these 3, also when they share the lead.

This model iRobot Roomba Plus 405 Combo Cheapest of the top 10 Dreame L50 Ultra Best on 7 facts Highest score here Roborock Qrevo Edge 3 Pro Best on 11 facts
Most important facts
Lowest price – $721Dreame (brand store) best $999Roborock (brand store)
Score 5.7 7.6 7.9 best
Customer rating – – –
Tests Just A Dad Approved Vacuum Wars Just A Dad Approved Vacuum Wars Just A Dad Approved Vacuum Wars
Suction power higher is better 7,000 Pa 19,500 Pa 36,000 Pa best
Runtime per charge longer is better 180 min 200 min 256 min best
Climbs thresholds up to higher is better 0.8 in (20 mm) 1.7 in (42 mm) 1.8 in (45 mm) best
Robot height lower is better 4.2 in (10.6 cm) 3.8 in (9.7 cm) 3.1 in (8 cm) best
Mop lift on carpet higher is better 0.4 in (10 mm) 0.4 in (10.5 mm) 0.6 in (15 mm) best
Dust bag lasts longer is better up to 75 days up to 100 days best up to 65 days

Compare all 26 facts →

Prices per store

Shipping included, sales tax added at checkout. We may earn a commission when you buy through our links. How we read and order prices

Also at Amazon, price not shown yet: Amazon.com (gray).

What you can expect from the iRobot Roomba Plus 405 Combo

Our score5.7 Rank 94 of 94
Ratings4.1 47 reviews
Robot height4.2 in

What testers say about the iRobot Roomba Plus 405 Combo

The iRobot Roomba Plus 405 Combo is the entry model of the refreshed Roomba line: lidar navigation instead of a camera, two spinning mop pads that lift on carpet and a station that empties the bin into a 75-day bag, washes and dries the pads and refills the water tank. Vacuum Wars bought one and tested it for weeks, with high hopes and a mixed verdict: the robot did not make the site's top 20, nor even its top 60.

The station is, in the testers' view, one of the better parts of the package and a big step up from iRobot's earlier washing docks, with a removable tray for a manual deep clean. The pads lift as soon as the robot detects carpet, so it can vacuum and mop in one run. The lidar mapped the home tidily and the robot set a Roomba record for navigation efficiency at 8.2 square feet per minute, though that is only 30th in the site's ranking.

The criticism: the robot has just one water level and soaks the floor. On dried stains it posted a record score, but it left five times as much water behind as average, which is why the testers do not call it a good mop. Obstacle recognition is absent entirely, even though it now exists in this price bracket, the station is louder than average when emptying and washes without warm water, and the redesigned app was consistently buggy during the test. Anyone set on a Roomba with a washing station gets a solid vacuum here; anyone after the best for the money will find more elsewhere.

Pros

  • Swept up surface debris of every size on hard floors and carpet Vacuum Wars ↗
  • New single brush roll resisted long hair tangles far better than older Roombas Vacuum Wars ↗
  • Dock reliably empties the bin, washes and dries the mops and refills water Vacuum Wars ↗

Cons

Each point sums up, in our words, the review of the test it names, and its link leads to that review. We do not summarize RTINGS or Wirecutter: their lists are linked above.

iRobot Roomba Plus 405 Combo specifications ?

Product on the market since March 2025 · Also sold or tested as: iRobot Roomba 405 Combo (Netherlands) source

Manual (PDF)
Climbs thresholds up to0.8 in
Mop lift on carpet0.4 in
Runtime per charge180 min
Suction power7,000 Pa

Consumables: a 2.5 l dust bag in the station, which lasts up to 75 days.

Dimensionsrobot and dock

Dock, from the front 18.6 in high 17.7 in deep 18.6 in 12.4 in wide Robot, from the side 14.1 in across 4.2 in

From the published dimensions. The robot passes under furniture with 4.2 in of clearance or more. The dock needs a spot 12.4 in wide and 17.7 in deep.

Suction and brushes 6 facts
Suction power
7,000 Pa
Anti-tangle brush
no
Main brush
rubber
Extending side brush
no (assumed)
Carpet detection
detects carpet and boosts suction
Suitable for pet hair
no
Mopping 6 facts
Mop type
spinning pads
Mop lift on carpet
0.4 in (10 mm)
Mop extends to the edges
no
Automatic mop detach
no (assumed)
Mop refreshed while mopping
no (assumed)
Steam
no (assumed)
Dock 12 facts
Empties the dust bin
yes
Bagless
no (assumed)
Dust bag capacity
2.5 l
Dust bag lasts
up to 75 days
Washes the mop
yes
Dries the mop
yes
Hot-air drying
no
Dispenses detergent
no
Plumbing hookup
no
Clean water tank
3 l
Dirty water tank
2.3 l
Dock size (w × d × h)
12.4 × 17.7 × 18.6 in (31.5 × 45 × 47.2 cm)
Navigation and obstacles 6 facts
Navigation
LiDAR turret
Obstacle avoidance
none
Climbs thresholds up to
0.8 in (20 mm)
Climbing system for high thresholds
no (assumed)
Stair-edge sensors
yes
Robotic arm
no (assumed)
Robot 5 facts
Robot height
4.2 in (10.6 cm)
Robot diameter
14.1 in (35.7 cm)
Robot weight
9 lb (4.1 kg)
Dust bin in the robot
295 ml
Noise while cleaning
64 dB
Battery 3 facts
Battery capacity
5,000 mAh
Runtime per charge
180 min
Charging time
4.5 h
Smart features and warranty 5 facts
Matter
no (assumed)
Voice assistants
Alexa, Google Assistant, Siri
Warranty
2 years
Scheduled runs
yes
Home Assistant
official integration

Where a row says “no (assumed)”, the maker's full product page for this model names the feature nowhere, so we take it as a no.

Sources: coolblue.nl · irobot.nl · vacuumwars.com · homesupport.irobot.com · home-assistant.io

Our score

Confidence: high. Two or more test sites, or one test site and 300 or more owners’ ratings. The highest score today is 7.9.

  • Test sites 60%5.8

    5 cleaning abilities measured, on one scale for every robot.

    • Deep clean on carpet3.9
    • Pet hair4.8
    • Mopping5.4
    • Obstacle avoidance1.2
    • Navigation6.7

    Deep clean on carpet: Just A Dad Approved 5.0 · Vacuum Wars 2.8 · the test sites disagree here. Pet hair: Just A Dad Approved 6.1 · Vacuum Wars 3.6 · the test sites disagree here. Mopping: Just A Dad Approved 4.7 · Vacuum Wars 6.1. Obstacle avoidance: Just A Dad Approved 0.0 · Vacuum Wars 2.4 · the test sites disagree here.

    Measured by Just A Dad Approved (read on September 9, 2026) · Vacuum Wars (read on September 29, 2026).

    Measured 4.5, counted 5.8, pulled toward its station type’s average.

  • Owners’ ratings 25%–

    Owners’ ratings, 25%: none yet at the stores that ship to the United States, so this part is left out and the others count for more.

  • Features 15%5.7

    51 of 89 points for the facts the maker states.

  • Price never countsA sale can’t lift a model. Today’s lowest price sits beside the score, checked every morning.
  • No test, no rankOnly robots a test site has tested are ranked. The rest get a provisional score.
  • Reviewers beside, not insideReviewers’ picks are shown next to the score and do not count in it.

How we work this out →

The testers’ picks

Positions and labels, never text. These picks are shown beside the score and do not count in it. How the score comes about is on the method page.

Ratings at the stores

Buyers rate the iRobot Roomba Plus 405 Combo 4.1 out of 5, from 47 reviews at 3 stores (Coolblue NL, Saturn DE, Kaufland.nl NL). We read the ratings on November 14, 2026.

4.1 out of 5. 47 reviews from 3 stores in 2 countries

By country

  • Netherlands, 2 stores 4.2 (4.2 out of 5) · 26 reviews
  • Germany, 1 store 4.0 (4.0 out of 5) · 21 reviews

The bar is the country's share of the reviews.

StoreRatingReviewsRead
Coolblue NL 4.0 (4.0 out of 5) 22 Nov 14
Saturn DE 4.0 (4.0 out of 5) 21 Nov 14
Kaufland.nl NL 5.0 (5.0 out of 5) 4 Nov 14

How we combine them. Each store counts once, with its biggest listing of this model, and its rating weighs by its number of reviews.

Not counted: Amazon (its terms do not allow us to show its ratings).

Frequently asked questions about the iRobot Roomba Plus 405 Combo

What has the iRobot Roomba Plus 405 Combo cost?

In our other editions it costs today: Netherlands € 319 at bol.com.

How do buyers rate the iRobot Roomba Plus 405 Combo?

Buyers rate the iRobot Roomba Plus 405 Combo 4.1 out of 5, from 47 reviews at 3 stores (Coolblue NL, Saturn DE and Kaufland.nl NL). We read the ratings on November 14, 2026.

Does the iRobot Roomba Plus 405 Combo wash and dry its own mop?

Yes. The station dries it too.

Does the iRobot Roomba Plus 405 Combo work with Alexa, Google Home or Siri?

It works with Alexa, Google Assistant and Siri. Home Assistant has an official integration for this model.

How long does the iRobot Roomba Plus 405 Combo run on one charge?

180 minutes on its quietest setting. A full charge takes 4.5 hours.

The maker

iRobot

iRobot designs and builds consumer robots, and introduced its first Roomba robot vacuum in 2002. The company was incorporated in 1990 and has its headquarters in Bedford, Massachusetts, in the United States. Since January 2026 it has been a privately held company wholly owned by Picea, which had been its primary contract manufacturer.

irobot.com

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