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Robot Vacuums · Head to head

iRobot Roomba Plus 515 Combo Robot + AutoWash Dock vs Narwal Flow

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from Amazon and official iRobot and Narwal sites.
2026 verdict
Same suction, same runtime, and a very different set of skills: the Narwal Flow takes this robot vacuum comparison on platforms and reviews.
Narwal Flow
Winner
Narwal Flow
$999.99

Last recorded price

Buy on Amazon USA
The Narwal Flow works with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter over 2.4 and 5 GHz Wi-Fi and Bluetooth, where the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock offers Alexa and Google Home on 2.4 GHz only and no Matter, Apple Home or SmartThings. Both are rated at 22,000 Pa and 200 minutes, and both wash, dry, lift and self-empty their mops without automatic detergent. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is the more affordable and the slimmer, at 84 mm against 95 mm. Pick the Narwal Flow for smart-home reach and mopping refinement, and the Roomba for a lower outlay in a tighter space.
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FeatureiRobot Roomba Plus 515 Combo Robot + AutoWash DockNarwal FlowWinner
Price$599.99$999.99iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Rating4.24.4Narwal Flow
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, 5 GHz WiFi, BluetoothNarwal Flow
IntegrationsGoogle Home, AlexaGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterNarwal Flow
Warranty1 year1 yearTie
Battery Life200 minutes200 minutesTie
Auto RechargeYESYESTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie
No-Go ZonesYESYESTie

What the differences mean

Smart home and Wi-Fi

The Narwal Flow supports Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter, on 2.4 and 5 GHz, plus Bluetooth. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock supports Alexa and Google Home on 2.4 GHz only, and not Apple Home, SmartThings or Matter. Home Assistant is not documented for the Roomba.

Height

The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock measures 84 mm tall and weighs about 2900 g, so it slips under lower furniture. The Narwal Flow is 95 mm tall and 5 kg, a little taller and heavier. The Roomba is the one that fits the tighter gap.

Charging

The Narwal Flow recharges in about 3 hours, the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock in about 6. Both are rated for 200 minutes of cleaning, so the difference shows only between jobs, and the Roomba spends twice as long on the dock.

Published figures

The Narwal Flow lists a 5 L water system, a 2.5 L dock bag and 60 dB. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock does not publish tank size, dock bag size or noise, so those rows cannot be compared, and nothing there is a proven win.

Mop mechanism

The Narwal Flow uses a rolling track that is rinsed with 113 F water while it scrubs, so the surface touching the floor stays clean. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock uses spinning pads washed and heat-dried at the dock. Neither doses detergent automatically.

Which one to buy if

Winner
Narwal

Narwal Flow

Prime exclusive deal
$999.99

Last recorded price

Buy on Amazon USA
  • + Rating: 4.4
  • + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
  • + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • - Price: $999.99 vs $599.99

What owners say

Owners of both robots praise the same core: a dock that empties itself and washes and dries the mop, so the routine shrinks to topping up water and bags. Narwal Flow owners, many coming from spinning-pad robots, single out a rolling track that rinses while it scrubs, dried spots and greasy kitchen marks lifting in a pass or two, a tangle-free roller that ended hand-pulling hair, and quiet running; their complaints are carpet, with the app misreading bare floor as rug and no way to draw a rug zone by hand. iRobot Roomba Plus 515 Combo Robot + AutoWash Dock owners talk more about vacuuming, calling suction very good on wood and tile and pet hair a recurring success, with an accurate LiDAR map and a dock that heat-dries the pads; they rate the mop only decent and note pads that snag on cords, a dirty-water tank that smells if left, and a 2.4 GHz setup that frustrated some.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
  • Narwal Flow

Loading price history...

Frequently Asked Questions

Which is better, the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock or the Narwal Flow?

The Narwal Flow, on reviews and on Apple Home, SmartThings and Matter. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock matches it at 22,000 Pa and 200 minutes, and it is the more affordable, slimmer robot.

What is the biggest difference between the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock and the Narwal Flow?

Which apps they join, and how tall they are. The Narwal Flow adds Apple Home and Matter. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock does not, and it is 84 mm tall against 95 mm. Suction and battery match.

Does the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock support Matter like the Narwal Flow?

No. The Narwal Flow supports Matter, Apple Home, SmartThings and Home Assistant. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock supports Alexa and Google Home, and not Apple Home, SmartThings or Matter.

Do both mop and wash the pads?

Yes. The Narwal Flow and the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock both mop, wash, dry, lift on carpet and self-empty. Neither dispenses detergent automatically. The Narwal lists a 5 L water system; the Roomba does not publish a tank size.

Who should buy the Narwal Flow?

Hard-floor homes that want the track mop, Matter or Apple Home, and the better reviewed robot, and who have space for a larger dock.

Who should buy the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock?

Buyers who want the more affordable wash dock in a slimmer 84 mm body, with Alexa or Google Home, at the same 22,000 Pa.

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