18% OFF
$659.40
$799.99
Updated November 2026
Data from the official iRobot site.
2026 verdict
For most homes, the iRobot Roomba Plus 415 Combo Robot + AutoWash Dock is the stronger of these two robot vacuums, and the better value.
It brings 20,000 Pa of suction against 7,000 on the iRobot Roomba Plus 405, a 200-minute rating against 180, a slim 84 mm body that slips under low furniture, and the stronger owner sentiment. Both share LiDAR mapping, an AutoWash dock that empties, washes and heat-dries the mop pads, a 1-year warranty and no Matter or Apple Home support. The iRobot Roomba Plus 405 keeps one edge: dual-band 2.4 GHz and 5 GHz Wi-Fi with Bluetooth, where the 415 Combo is 2.4 GHz only. Pick the 415 Combo unless you specifically need 5 GHz Wi-Fi.
Works with
Connectivity
- Wi-Fi 2.4/5 GHz
- Bluetooth
vs
Winner
37% OFF
$379.00
$599.99
Works with
Connectivity
- Wi-Fi 2.4 GHz
- Bluetooth
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The biggest differences
Where these two are furthest apart, and by how much.
- Suction Power2.9×iRobot Roomba Plus 415 Combo Robot + AutoWash Dock20000Pa vs 7000Pa
- Battery Life+11%iRobot Roomba Plus 415 Combo Robot + AutoWash Dock200 minutes vs 180 minutes
| Feature | iRobot Roomba Plus 405 | iRobot Roomba Plus 415 Combo Robot + AutoWash Dock | Winner |
|---|---|---|---|
| Price | $659.40 | $379.00 | iRobot Roomba Plus 415 Combo Robot + AutoWash Dock |
| Battery Life | 180 minutes | 200 minutes | iRobot Roomba Plus 415 Combo Robot + AutoWash Dock |
| Connectivity | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | 2.4 GHz WiFi, Bluetooth | iRobot Roomba Plus 405 |
| Suction Power | 7000Pa | 20000Pa | iRobot Roomba Plus 415 Combo Robot + AutoWash Dock |
| Rating | 3.2 | 3.2 | Tie |
| Warranty | 1 year | 1 year | Tie |
| Auto Recharge | YES | YES | Tie |
| Integrations | Google Home, Alexa | Google Home, Alexa | Tie |
| Navigation Type | Laser (LiDAR) | Laser (LiDAR) | Tie |
| Obstacle Detection | YES | YES | Tie |
| Cliff Detection | YES | YES | Tie |
| Multi-Room Mapping | YES | YES | Tie |
What the differences mean
Suction
20,000 Pa against 7,000 Pa. The iRobot Roomba Plus 415 Combo Robot + AutoWash Dock has far more headroom for carpets and pet hair, which is the single biggest reason it wins.
Body height
The iRobot Roomba Plus 415 Combo Robot + AutoWash Dock is 84 mm tall against 106 mm for the iRobot Roomba Plus 405, so only the 415 reaches under most low beds, sofas and toe-kicks.
Wi-Fi bands
The iRobot Roomba Plus 405 is the only one with dual-band 2.4 GHz and 5 GHz Wi-Fi, plus Bluetooth. The 415 Combo stays on 2.4 GHz, which can matter on a crowded router.
Battery
200 minutes on the iRobot Roomba Plus 415 Combo Robot + AutoWash Dock against 180 on the 405. Both recharge and resume, so the gap shows up only in larger homes.
Dock
Both use an AutoWash dock that empties the bin and washes and heat-dries the spinning mop pads. Neither doses detergent automatically, so cleaning solution is added by hand in both.
Reliability reputation
Owner sentiment is the other real difference. The 415 Combo carries a much stronger rating history, while the 405's reviews include repeated accounts of Wi-Fi drops and docking faults after the first month.
Which one to buy if
- you have low furniture you want cleaned under
The 84 mm body of the iRobot Roomba Plus 415 Combo Robot + AutoWash Dock reaches where the 106 mm 405 cannot.
- you want stronger carpet and pet-hair cleaning
Its 20,000 Pa suction is nearly triple the 405's 7,000 Pa.
- your network is crowded and you need a 5 GHz option
The iRobot Roomba Plus 405 supports dual-band Wi-Fi and Bluetooth; the 415 Combo is 2.4 GHz only.
- you want the most dependable record
The iRobot Roomba Plus 415 Combo Robot + AutoWash Dock has the stronger owner sentiment, while the 405 draws more reliability complaints.
- you are shopping to a tight budget
The iRobot Roomba Plus 405 is the lower priced entry point into iRobot's combo line.
18% OFF
$659.40
$799.99
- + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
- - Price: $659.40 vs $379.00
- - Battery Life: 180 minutes vs 200 minutes
Winner
37% OFF
$379.00
$599.99
- + Price: $379.00
- + Battery Life: 200 minutes
- + Suction Power: 20000Pa
- - Connectivity: 2.4 GHz WiFi, Bluetooth vs 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
What owners say
iRobot Roomba Plus 405 owners and iRobot Roomba Plus 415 Combo Robot + AutoWash Dock owners agree on the strengths: LiDAR builds an accurate map quickly, both vacuum and mop, and both keep pet hair under control. iRobot Roomba Plus 415 Combo Robot + AutoWash Dock owners single out the slim body that reaches under low furniture and the heat-dried pads that never smell, and they praise the long battery life; their complaints are a clunky app, a loud self-empty cycle and small cords getting caught. iRobot Roomba Plus 405 owners describe it as quieter and more accurate than older Roombas, but a vocal minority report Wi-Fi drops, ignored schedules and docking trouble appearing after the first month or two, which is the main reason its ratings lag.
Frequently Asked Questions
Which is better overall: iRobot Roomba Plus 405 or iRobot Roomba Plus 415 Combo Robot + AutoWash Dock?
The iRobot Roomba Plus 415 Combo Robot + AutoWash Dock, for most buyers. It has far more suction, a slimmer body, a longer battery and a stronger owner reputation. The iRobot Roomba Plus 405 is only the pick if you need dual-band Wi-Fi or the lower price.
What is the biggest difference between the iRobot Roomba Plus 405 and the iRobot Roomba Plus 415 Combo Robot + AutoWash Dock?
Suction and height. The 415 Combo lists 20,000 Pa against 7,000 on the 405, and at 84 mm tall it reaches under low furniture the 106 mm 405 cannot.
Do both wash and dry their own mop pads?
Yes. Both the iRobot Roomba Plus 405 and the iRobot Roomba Plus 415 Combo Robot + AutoWash Dock empty their bin and wash and heat-dry the mop pads at the dock. Neither adds detergent automatically.
Does the iRobot Roomba Plus 415 Combo work on 5 GHz Wi-Fi?
No. The iRobot Roomba Plus 415 Combo Robot + AutoWash Dock needs a 2.4 GHz network. The iRobot Roomba Plus 405 is the one that supports both 2.4 GHz and 5 GHz.
Which has better pet-hair pickup?
The iRobot Roomba Plus 415 Combo Robot + AutoWash Dock, with 20,000 Pa of suction against 7,000 Pa on the iRobot Roomba Plus 405, and owners report strong results on both carpet and hard floors.
Who should buy the iRobot Roomba Plus 405?
Buyers who need dual-band Wi-Fi, want the lower upfront price and accept the greater chance of reliability quirks that its owner reviews describe.
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