Robot Vacuums · Head to head

Dreame D30 Ultra vs iRobot Roomba Plus 515 Combo Robot + AutoWash Dock

Full Robot Vacuums comparison in 2026

Updated November 2026
Data from the official Dreame and iRobot sites.
2026 verdict
Better reviews give the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock the edge as the robot vacuum to buy: it has the better reviews of the two and a slimmer body for low furniture.
The Dreame D30 Ultra pushes back with more suction (25000Pa against 22000Pa), a longer runtime (230 minutes per charge against 200), a 3-year warranty against 1 year and a lower price. Feature for feature they are otherwise close, both on 2.4 GHz Wi-Fi only, with LiDAR mapping, obstacle and cliff detection, no-go zones, self-emptying docks and mops that are washed, dried and lifted on carpet. Low furniture points to the Roomba; buyers who want the stronger suction, longer runtime and longer warranty for less should pick the Dreame.
Connectivity
  • Wi-Fi 2.4 GHz
vs
Connectivity
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The biggest differences

Where these two are furthest apart, and by how much.

  • Warranty3×Dreame D30 Ultra3 years vs 1 year
  • Battery Life+15%Dreame D30 Ultra230 minutes vs 200 minutes
  • Suction Power+14%Dreame D30 Ultra25000Pa vs 22000Pa
FeatureDreame D30 UltraiRobot Roomba Plus 515 Combo Robot + AutoWash DockWinner
Price$449.98$599.99Dreame D30 Ultra
Rating4.23.6Dreame D30 Ultra
Warranty3 years1 yearDreame D30 Ultra
Battery Life230 minutes200 minutesDreame D30 Ultra
Connectivity2.4 GHz WiFi2.4 GHz WiFi, BluetoothiRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Suction Power25000Pa22000PaDreame D30 Ultra
Auto RechargeYESYESTie
IntegrationsGoogle Home, Alexa, Home AssistantGoogle Home, AlexaTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie

Frequently Asked Questions

Which is better overall: Dreame D30 Ultra or iRobot Roomba Plus 515 Combo Robot + AutoWash Dock?

The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock wins overall on owner feedback. The Dreame D30 Ultra wins on price, warranty, battery life and suction power.

Which robot vacuum has more suction?

The Dreame D30 Ultra is rated at 25000Pa, a step above the 22000Pa of the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock.

Which one supports 5 GHz Wi-Fi?

Neither does. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock and the Dreame D30 Ultra are both 2.4 GHz only.

Do both docks clean the mop?

Yes. The Dreame D30 Ultra and the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock both wash and dry their mops and lift them on carpet. Neither doses detergent automatically.

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

Buyers who put owner feedback first. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock also has a slimmer body for low furniture.

Who should buy the Dreame D30 Ultra?

Buyers who want stronger suction and a 3-year warranty at a lower cost. The Dreame D30 Ultra also carries a 4.5L water tank.

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