- Suction
- iRobot claims 70x
- Navigation
- ClearView LiDAR
- Mopping
- DualClean spinning pads
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iRobot Roomba Plus 405 Combo
iRobot's LiDAR combo with spinning mop pads and a pad washing dock
Researched by Riley Hart · updated Oct 30, 2026
Is the iRobot Roomba Plus 405 Combo worth it? The Plus 405 Combo gives you LiDAR mapping, lifting spin mops and a dock that empties and washes pads for about $800. It costs $800 as of Oct 31, 2026, and 2 independent reviewers tested it.
The Plus 405 Combo gives you LiDAR mapping, lifting spin mops and a dock that empties and washes pads for about $800. Both independent tests we read were unimpressed: weak measured suction, poor carpet and pet hair results, wet floors and no obstacle avoidance. Hard floor homes that want the iRobot app can consider it on a deep sale; most buyers should compare other docks first.
Best for: hard floor homes on a deep discount. Skip if: you have carpet, pets or cables on the floor.
Specs
- Suction
- iRobot claims 70x the suction of Roomba 600 series, with 4 levels; Vacuum Wars measured 0.13 kPa against a 0.83 kPa average
- Navigation
- ClearView LiDAR, maps about 1,000 sq ft in 9 minutes and stores up to 4 maps (iRobot); Vacuum Wars measured 0.76 m2/min against a 0.70 average
- Obstacle avoidance
- No obstacle avoidance sensors (Vacuum Wars); BestReviews saw it tangle on cords twice in one run
- Mopping
- DualClean spinning pads at 200 RPM with SmartScrub and auto lift on carpet (iRobot); Vacuum Wars scored 145 on dried stains against a 93 average but found it left 5.20 g of water against a 1.01 g average
- Self empty
- Yes, bagged, up to 75 days based on one run per week (iRobot)
- Dock features
- AutoWash dock empties the bin, washes and dries the pads and runs a self cleaning water cycle (iRobot); Vacuum Wars notes no hot water wash or hot air drying
- Dustbin
- 0.1 gal robot bin (Best Buy listing)
- Height
- 4.2 in; robot is 14.1 x 13.8 x 4.2 in and 9.06 lb (iRobot)
3 year cost of ownership
- Robot
- $800
- Total
- $800
iRobot's product page links to bags and pads but showed no prices, so running costs are not included.
Status and safety
- US availability
- ● On sale
- Recalls
- ● No iRobot robot recall in the CPSC database as of Oct 31, 2026. Checked daily.
- FCC authorized
- Not checked
- Company
- Restructured
- Warranty
- Not listed
Price history
Tracked dailyTracking started Oct 31, 2026 at $800.
Each day adds a point. Turn on a price alert to hear about drops.
Where to buy
- Amazon
- See price →
- iRobot US store
- $800 →
- Best Buy
- See price →
Affiliate links. We may earn a commission. It never changes our score. Disclosure
Pros
- Dock empties, washes and dries mop pads
- LiDAR maps quickly and stores 4 maps
- Mop pads lift on carpet
- Single brush roll resisted hair wrap in testing
Cons
- Very low measured suction
- Poor carpet and pet hair pickup
- No obstacle avoidance
- Leaves floors wet
- Loud dock emptying
What independent reviewers found
- Measured 0.13 kPa suction and 10 CFM airflow against 0.83 kPa and 16 CFM averages, 58% carpet deep clean against 75%, 50% flattened pet hair against 66%, and 5.20 g of water left behind. Dried stain score of 145 beat the 93 average. Called it a letdown.
- Vacuum Wars · 1.66 Vacuum Wars stars
- Tested in a 1,000 sq ft two level apartment. Picked up 90% to 95% of faux fur on hard floors but under 50% on carpet, spread spilled water, tangled on cords twice in one run, and the dock measured 80 to 85 dB when emptying. Testers did not recommend it.
- BestReviews
Spec history
Checked dailyNo spec changes since we started tracking on Oct 31, 2026.
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Questions buyers ask
Does the dock wash the mop pads?
Yes. iRobot says the AutoWash dock washes and dries the pads and runs a self cleaning water cycle. Vacuum Wars notes it does not use hot water or hot air.
Will it avoid cords and socks?
No. Vacuum Wars found no obstacle avoidance sensors, and BestReviews saw it tangle on cords twice in one run.
How often do I change the bag?
iRobot says the dock holds up to 75 days of debris based on one run per week.
Guides and rankings with the iRobot Roomba Plus 405 Combo
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