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Robot Vacuums · Head to head

iRobot Roomba Plus 505 vs Roborock Saros 20 Sonic

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from Amazon and official iRobot and Roborock sites.
2026 verdict
Among robot vacuums with a self-washing mop dock, the Roborock Saros 20 Sonic is the stronger overall pick against the iRobot Roomba Plus 505, mainly on suction and a much slimmer body.
Roborock Saros 20 Sonic
Winner
Roborock Saros 20 Sonic
$1499.99$1699.9912% OFF
Both work with Alexa, Google Home, Apple Home, SmartThings and Home Assistant through Matter, and both have a dock that empties, washes and dries the mop on its own. The iRobot Roomba Plus 505 answers with a lower price and a real-world reputation for fast, accurate mapping. What sets the Roborock Saros 20 Sonic apart is its 36,000 Pa suction and a 79.8 mm profile that clears furniture the iRobot cannot reach. Buyers who want the most suction and the slimmest body should pick the Roborock Saros 20 Sonic; anyone who wants the same dock automation for less should pick the iRobot Roomba Plus 505.
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FeatureiRobot Roomba Plus 505Roborock Saros 20 SonicWinner
Price$695.00$1499.99iRobot Roomba Plus 505
Battery Life180 minutes190 minutesRoborock Saros 20 Sonic
Suction Power7000Pa36000PaRoborock Saros 20 Sonic
Rating4.24.2Tie
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

Suction power

36,000 Pa on the Roborock Saros 20 Sonic against 7,000 Pa on the iRobot Roomba Plus 505, a large gap on carpet and stubborn hard-floor debris.

Height

At 79.8 mm tall the Roborock Saros 20 Sonic slides under sofas, beds and cabinets the 106 mm tall iRobot Roomba Plus 505 cannot fit under.

Noise

iRobot Roomba Plus 505 owners describe the AutoWash dock running louder than expected during its self-cleaning cycle. The Roborock Saros 20 Sonic is rated at 64 dB, typical for its suction class.

Charging time

The Roborock Saros 20 Sonic recharges in about 2.5 hours against roughly 4.5 hours on the iRobot Roomba Plus 505, so an interrupted job resumes sooner.

Price

The iRobot Roomba Plus 505 is more affordable than the Roborock Saros 20 Sonic, despite matching it on dock automation and Matter-based smart home support.

Which one to buy if

What owners say

Owners of the iRobot Roomba Plus 505 consistently praise how fast and accurate its LiDAR mapping is, often finishing a full floor in well under an hour on the first run, and call out strong pet hair pickup on both carpet and hard floors along with an AutoWash dock that rinses the mop pads mid-cycle before emptying and drying everything at the end. Their most common complaint is noise, particularly while the dock runs its self-cleaning cycle, which several compare to a washing machine running nearby, and a smaller group reports navigation or bumper-stuck errors emerging a few months after purchase. Buyers are also advised to purchase only from iRobot or an authorized retailer, since warranty support was harder to obtain for some 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 Plus 505
  • Roborock Saros 20 Sonic

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Frequently Asked Questions

Which is better overall: iRobot Roomba Plus 505 or Roborock Saros 20 Sonic?

The Roborock Saros 20 Sonic for stronger suction and a slimmer body. The iRobot Roomba Plus 505 is the pick for buyers who want the same automated mop dock at a lower price.

What is the biggest difference between the iRobot Roomba Plus 505 and the Roborock Saros 20 Sonic?

Suction and height. The Roborock Saros 20 Sonic is rated at 36,000 Pa and stands just 79.8 mm tall, while the iRobot Roomba Plus 505 is rated at 7,000 Pa, stands 106 mm tall and costs less.

Do the iRobot Roomba Plus 505 and the Roborock Saros 20 Sonic both work with Apple Home?

Yes. Both support Matter, which brings them into Apple Home and Samsung SmartThings, and both also work with Alexa, Google Home and Home Assistant.

Which one fits under lower furniture?

The Roborock Saros 20 Sonic, at 79.8 mm tall against the iRobot Roomba Plus 505's 106 mm, reaches more beds, sofas and cabinets.

Who should buy the iRobot Roomba Plus 505?

Buyers who want fast, accurate mapping and an automated mop dock at a lower price, and are buying from iRobot or an authorized retailer for warranty coverage.

Who should buy the Roborock Saros 20 Sonic?

Buyers who want the strongest suction and the slimmest body of the pair, and are willing to pay more for it.

Full comparison table

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