Robot Vacuums · Head to head

iRobot Roomba 415X vs iRobot Roomba Plus 515 Combo Robot + AutoWash Dock

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from the official iRobot site.
2026 verdict
For most buyers the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is the better of these near-twin iRobot robot vacuums, on rated suction and owner rating.
iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Winner
iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
$599.00$699.9914% OFF
Buy on Amazon USA
It lists 22000Pa against 20000Pa for the iRobot Roomba 415X, and both are rated for 200 minutes per charge in a very similar slim body with the same LiDAR mapping, self-emptying dock and mop that washes, dries and lifts. The iRobot Roomba 415X is the lower priced of the two and matches the Plus 515 on almost everything else, so the suction gap is the main reason to choose the newer model. Neither dispenses detergent automatically, and neither reaches Apple Home, SmartThings or Matter. Take the iRobot Roomba 415X if the price gap is wide, and the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock if you want the stronger rated motor.
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FeatureiRobot Roomba 415XiRobot Roomba Plus 515 Combo Robot + AutoWash DockWinner
Price$636.00$599.00iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Rating4.14.2iRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Suction Power20000Pa22000PaiRobot Roomba Plus 515 Combo Robot + AutoWash Dock
Warranty1 year1 yearTie
Battery Life200 minutes200 minutesTie
Auto RechargeYESYESTie
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, BluetoothTie
IntegrationsGoogle Home, AlexaGoogle Home, AlexaTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie

What the differences mean

Rated suction

The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock lists 22000Pa against 20000Pa for the iRobot Roomba 415X. The gap is small and unlikely to change how either robot cleans day to day.

Dock interval

The iRobot Roomba 415X states its AutoWash dock empties for up to 90 days. The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock does not publish an equivalent figure, so it cannot be compared on this line.

Price

The iRobot Roomba 415X is the lower priced of the two. Since the hardware and feature list are otherwise nearly identical, that price is the strongest reason to pick it over the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock.

Mopping and detergent

Both wash, dry and lift the mop and both accept cleaning solution, and neither dispenses it automatically, so the detergent has to be added to the tank by hand on both the iRobot Roomba 415X and the Plus 515.

Which one to buy if

What owners say

Owners of both iRobot models praise the same routine: set a schedule, let the AutoWash dock empty the bin and heat-dry the mop pads, and ignore the robot for days. They also raise the same 2.4 GHz setup friction and the same occasionally rough app. Then the emphasis shifts. iRobot Roomba 415X owners talk about the 20000Pa suction lifting dust out of floor cracks and handling pet hair, the slim body reaching under beds, and quiet overnight runs, and they warn about hair tangling in the mop module. iRobot Roomba Plus 515 Combo Robot + AutoWash Dock owners are firmer about pet hair on wood and low rugs and about the LiDAR map coming out accurate, but they are candid that the mopping is only decent, the pads can snag on cords and the dirty water tank smells if left.

Frequently Asked Questions

Should I buy the iRobot Roomba 415X or the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock?

The iRobot Roomba Plus 515 Combo Robot + AutoWash Dock is the better robot vacuum overall, leading on suction power. The iRobot Roomba 415X matches it on battery life, at 200 minutes, and is the cheaper of the two.

How do the iRobot Roomba 415X and the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock actually differ day to day?

Very little. The main split is suction, 22000Pa on the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock against 20000Pa on the iRobot Roomba 415X, and since both share the same 200 minute runtime and dock routine, you would struggle to tell them apart in use.

Which has broader smart home support, the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock or the iRobot Roomba 415X?

Neither is broad. Both list Alexa and Google Home only, with no Apple Home, SmartThings or Matter.

Who is the iRobot Roomba Plus 515 Combo Robot + AutoWash Dock for?

Buyers who want the strongest rated motor of the pair, pet hair pickup and a self-emptying, self-washing dock, and who are willing to pay a little more than the iRobot Roomba 415X.

When does the iRobot Roomba 415X make more sense?

When the price gap is wide. The iRobot Roomba 415X matches the Plus 515 on 200 minute battery, LiDAR mapping, self-emptying and mop washing, drying and lifting, and it states a 90 day dock interval.

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