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Robot Vacuums · Head to head

iRobot Roomba 705X vs iRobot Roomba Plus 505

Full Robot Vacuums comparison in 2026

Updated September 2026
Data from Amazon and official iRobot site.
2026 verdict
For a long run and a lower outlay, the iRobot Roomba Plus 505 is the better robot vacuum of this pair.
It is rated for 180 minutes per charge against 120 on the iRobot Roomba 705X, and it is the more affordable of the two. The iRobot Roomba 705X answers with suction: 13,000 Pa against 7,000 Pa, plus a PowerSpin roller mop that its AutoWash dock washes, dries and doses with detergent, where the iRobot Roomba Plus 505 relies on spinning pads with no automatic detergent. Both self-empty, lift their mops over carpet and work with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter. Pick the iRobot Roomba Plus 505 for longer runs and a lighter dock, and the iRobot Roomba 705X if raw suction and a self-dosing roller matter more.
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FeatureiRobot Roomba 705XiRobot Roomba Plus 505Winner
Price$699.99$695.00iRobot Roomba Plus 505
Rating4.34.2iRobot Roomba 705X
Battery Life120 minutes180 minutesiRobot Roomba Plus 505
Suction Power13000Pa7000PaiRobot Roomba 705X
Warranty1 year1 yearTie
Auto RechargeYESYESTie
Connectivity2.4 GHz WiFi, 5 GHz WiFi, Bluetooth2.4 GHz WiFi, 5 GHz WiFi, BluetoothTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie

What the differences mean

Battery life

The iRobot Roomba Plus 505 is rated for 180 minutes per charge, the iRobot Roomba 705X for 120. Both recharge and resume on their own, so the practical effect shows up in larger homes: the shorter battery is more likely to pause a job, drive back to the dock and finish it after a top-up.

Suction

The iRobot Roomba 705X is rated at 13,000 Pa and the iRobot Roomba Plus 505 at 7,000 Pa. On bare floors both clear everyday dust, but the 705X has more pull in reserve for carpet and embedded pet hair, which is what its spec-sheet win rests on.

How they mop

The iRobot Roomba 705X uses a PowerSpin roller mop at 200 RPM with automatic cleaning solution dispensing. The iRobot Roomba Plus 505 uses spinning mop pads, washes and heat-dries them at the dock, but has no automatic detergent dispenser, so any solution goes in by hand.

Weight and dock

The iRobot Roomba Plus 505 is the lighter setup: about 4.3 kg for the robot and 6.3 kg for the dock. The iRobot Roomba 705X weighs about 12.61 lb and its AutoWash station about 18.67 lb, a heavier base that wants a sturdier spot with room around it.

Which one to buy if

What owners say

The only owner reviews in this pair belong to the iRobot Roomba Plus 505, and they centre on mapping and pet hair. Owners describe a LiDAR map that comes together quickly and stays accurate across rooms, strong pickup of dog and cat hair on hardwood and carpet, and an AutoWash dock that empties the bin and washes and dries the mop pads so the routine stays hands-off. The recurring complaint is noise: several owners say it runs louder than expected, especially while the dock is cleaning itself, and a handful report navigation or bumper errors appearing after a few months. Several stress buying from iRobot or an authorized seller, since warranty support proved hard for owners who bought through third-party sellers.

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 705X
  • iRobot Roomba Plus 505

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Frequently Asked Questions

Which is better overall: iRobot Roomba 705X or iRobot Roomba Plus 505?

The iRobot Roomba Plus 505, on battery life and price. It runs longer and costs less. The iRobot Roomba 705X is the stronger vacuum, rated at 13,000 Pa against 7,000 Pa, with a PowerSpin roller mop its dock doses with detergent.

What is the biggest difference between the iRobot Roomba 705X and the iRobot Roomba Plus 505?

Runtime and suction, pulling opposite ways. The iRobot Roomba Plus 505 is rated for 180 minutes against 120, while the iRobot Roomba 705X is rated at 13,000 Pa against 7,000 Pa. Both self-empty and both wash and dry their mops at the dock.

How does the iRobot Roomba 705X mop compared with the iRobot Roomba Plus 505?

The iRobot Roomba 705X uses a PowerSpin roller that spins at 200 RPM and dispenses cleaning solution automatically. The iRobot Roomba Plus 505 uses spinning pads washed and heat-dried at the dock, but has no automatic detergent dispenser.

Do the iRobot Roomba 705X and the iRobot Roomba Plus 505 work with Apple Home and Matter?

Both do. The iRobot Roomba 705X and the iRobot Roomba Plus 505 work with Alexa, Google Home, Apple Home through Matter, Samsung SmartThings, Home Assistant and Matter.

Who should buy the iRobot Roomba Plus 505?

Homes with an open floor plan that want the longest run on a charge, a lighter dock and the lower outlay, without giving up self-emptying or mop washing.

Who should buy the iRobot Roomba 705X?

Buyers who want the strongest suction of the two, a self-dosing roller mop and full smart-home support, and who do not mind the shorter battery or the heavier AutoWash station.

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