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Robot Vacuums · Head to head

iRobot Roomba 505X vs Roborock Saros 20

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from Amazon and official iRobot and Roborock sites.
2026 verdict
Suction at the top of the range puts the Roborock Saros 20 ahead.
Roborock Saros 20
Winner
Roborock Saros 20
$1479.99$1599.998% OFF
Buy on Amazon USA
It is rated at 36,000 Pa and 200 minutes against 7,000 Pa and 180 minutes on the iRobot Roomba 505X, in a body only 79.8 mm tall. Both mop, wash, dry, lift and self-empty, and both list Apple Home, SmartThings, Home Assistant and Matter. The Roborock Saros 20 also doses detergent, holds 4 L of water and charges in 2.5 hours. The iRobot Roomba 505X is the more affordable robot vacuum. Its tank sizes are not published. Pick the Roborock Saros 20 for suction and a slim body. Pick the Roomba to spend less on the same style of dock.
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FeatureiRobot Roomba 505XRoborock Saros 20Winner
Price$469.99$1479.99iRobot Roomba 505X
Battery Life180 minutes200 minutesRoborock Saros 20
Suction Power7000Pa36000PaRoborock Saros 20
Water Tank Capacity3L4LRoborock Saros 20
Onboard Dustbin Capacity295ml259mliRobot Roomba 505X
Rating4.24.2Tie
Warranty1 year1 yearTie
Auto RechargeYESYESTie
Connectivity2.4 GHz WiFi, 5 GHz WiFi, Bluetooth2.4 GHz WiFi, 5 GHz WiFiTie
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

What the differences mean

Suction

The Roborock Saros 20 is rated at 36,000 Pa and the iRobot Roomba 505X at 7,000 Pa. Both already have a full mopping dock, so this comparison is not about whether a mop exists. It is about how hard the vacuum pulls, and the Roborock is in a different class on the published number.

Height and charging

The Roborock Saros 20 is 79.8 mm tall, runs 200 minutes and charges in 2.5 hours. The iRobot Roomba 505X is 107 mm tall, runs 180 minutes and charges in 4.5 hours. Low sofas are a Roborock advantage. The Roomba will stop where the slimmer robot continues.

Water and detergent

The Roborock Saros 20 holds 4 L of water, doses detergent and empties into a 2.5 L bag, with a 259 ml onboard bin. The iRobot Roomba 505X does not dose detergent, and its water tank and dock bag are not published. Both wash, dry and lift. The Roborock also joins 5 GHz Wi-Fi. The Roomba does too, so that row is shared.

Noise

The Roborock Saros 20 publishes 63 dB. The iRobot Roomba 505X does not publish a noise figure. Owners of the Roomba describe deep-clean runs as loud. Owners of the Roborock describe overnight running as comfortable. Treat that as what each group says, not as a second spec for the Roomba.

Which one to buy if

iRobot

iRobot Roomba 505X

53% OFF
Prime exclusive deal
$469.99
$999.99
Buy on Amazon USA
  • + Price: $469.99
  • + Onboard Dustbin Capacity: 295ml
  • - Battery Life: 180 minutes vs 200 minutes
  • - Suction Power: 7000Pa vs 36000Pa
Winner
Roborock

Roborock Saros 20

8% OFF
Prime exclusive deal
$1479.99
$1599.99
Buy on Amazon USA
  • + Battery Life: 200 minutes
  • + Suction Power: 36000Pa
  • + Water Tank Capacity: 4L
  • - Price: $1479.99 vs $469.99
  • - Onboard Dustbin Capacity: 259ml vs 295ml

What owners say

Owners of the iRobot Roomba 505X and the Roborock Saros 20 both praise a dock that keeps the mop from becoming a chore, and accurate maps. iRobot Roomba 505X owners single out hardwood and tile with little weekly work, and they say deep-clean mode is loud and the first pairing can be fussy. Roborock Saros 20 owners single out suction in floor gaps, quiet overnight runs, and a low body that finally cleans under furniture, plus obstacle avoidance around cables. They complain that no mop solution is in the box, that threshold climbing is uneven, and that deep-clean runs drain the battery faster. The flagship price is the other hesitation they name.

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 505X
  • Roborock Saros 20

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Frequently Asked Questions

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

The Roborock Saros 20, on 36,000 Pa suction, a 79.8 mm body, a 4 L tank and detergent dosing. The iRobot Roomba 505X is the more affordable wash-and-dry robot vacuum, at 7,000 Pa, with the same Apple Home and Matter support.

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

Suction and height. The Roborock Saros 20 is 36,000 Pa and 79.8 mm tall. The iRobot Roomba 505X is 7,000 Pa and 107 mm tall. Both mop, self-empty and work with Apple Home and Matter.

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

Yes. Both list Apple Home, SmartThings, Home Assistant and Matter, plus Alexa and Google Home, and both join 5 GHz Wi-Fi. The Roborock Saros 20 also doses detergent. The Roomba does not.

Which charges faster, the iRobot Roomba 505X or the Roborock Saros 20?

The Roborock Saros 20, in 2.5 hours against 4.5 hours. It is also rated for 200 minutes of runtime against 180, and it publishes 63 dB.

Who should buy the Roborock Saros 20?

Homes that want flagship suction, a body that fits under low furniture, and a dock that doses detergent as well as washing the mop.

Who should buy the iRobot Roomba 505X?

Buyers who want a Roomba wash-and-dry dock with Apple Home and Matter, and who do not need 36,000 Pa or the slimmer chassis.

Full comparison table

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