Last recorded priceOct 1, 2026$1499.99
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| Feature | iRobot Roomba Max 705 | Roborock Saros 20 Sonic | Winner |
|---|---|---|---|
| Rating | 3.8 | 4.2 | Roborock Saros 20 Sonic |
| Battery Life | 120 minutes | 190 minutes | Roborock Saros 20 Sonic |
| Suction Power | 13000Pa | 36000Pa | Roborock Saros 20 Sonic |
| Mopping Functionality | NO | YES | Roborock Saros 20 Sonic |
| Auto Mop Washing | NO | YES | Roborock Saros 20 Sonic |
| Auto Mop Drying | NO | YES | Roborock Saros 20 Sonic |
| Onboard Dustbin Capacity | 275ml | 228ml | iRobot Roomba Max 705 |
| Warranty | 1 year | 1 year | Tie |
| Auto Recharge | YES | YES | Tie |
| Connectivity | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Navigation Type | Laser (LiDAR) | Laser (LiDAR) | Tie |
What the differences mean
Mopping
The Roborock Saros 20 Sonic mops, and the dock washes and dries the pads and lifts them for carpet. The iRobot Roomba Max 705 does not mop at all, so hard floors stay a manual job. In a carpet-only home that missing pad is a simpler machine rather than a feature you will miss.
Suction and runtime
The Roborock Saros 20 Sonic is rated at 36,000 Pa and 190 minutes, against 13,000 Pa and 120 minutes on the iRobot Roomba Max 705, and it also charges in about 2.5 hours instead of 4.5. On a large floor the runtime is fewer trips home.
Height under furniture
The Roborock Saros 20 Sonic is 79.8 mm tall, so it slides under more sofas and beds than the iRobot Roomba Max 705 at 104 mm. Both use LiDAR, obstacle detection, multi-room maps and no-go zones, so the difference is the body, not the brain.
Connectivity
Both support 5 GHz Wi-Fi and work with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter. Both list Bluetooth. Smart-home reach is a tie, and so is the radio set.
Onboard bin
The iRobot Roomba Max 705 carries a 275 ml onboard bin, ahead of the 228 ml on the Roborock Saros 20 Sonic, and both self-empty into their docks. The iRobot AutoEmpty dock is the smaller, lower station of the two, made for vacuuming only.
Which one to buy if
- hard floors need a mop the dock can wash
The Roborock Saros 20 Sonic mops and the dock washes and dries the pads. The iRobot Roomba Max 705 is vacuum only.
- the home is mostly carpet and you already mop by hand
The iRobot Roomba Max 705 puts 13,000 Pa and a self-empty dock on carpet without a mop system to fill, wash or dry.
- the robot must slide under low beds
At 79.8 mm, the Roborock Saros 20 Sonic clears furniture the 104 mm iRobot Roomba Max 705 cannot.
- you want the more affordable vacuum and will skip mopping
The iRobot Roomba Max 705 is the lower priced of the pair and still maps, self-empties and works with Apple Home and Matter.
- + Onboard Dustbin Capacity: 275ml
- - Rating: 3.8 vs 4.2
- - Battery Life: 120 minutes vs 190 minutes
- + Rating: 4.2
- + Battery Life: 190 minutes
- + Suction Power: 36000Pa
- - Onboard Dustbin Capacity: 228ml vs 275ml
What owners say
The iRobot Roomba Max 705 is the only side of this pair with owner reviews, and many owners arrived from an older Roomba. They praise LiDAR mapping that holds across rooms, an AutoEmpty dock that clears the bin for weeks, and Carpet Boost that picks up pet hair and dander on carpet, and they call this generation quieter than the Roombas it replaced. The recurring complaint is Wi-Fi setup: the app can fail when the router password contains special characters, and a few report the dock not fully clearing the bin or a false stuck error. Because the robot does not mop, those owners keep a separate mop for hard floors.
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 Max 705
- Roborock Saros 20 Sonic
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Frequently Asked Questions
Which is better overall: iRobot Roomba Max 705 or Roborock Saros 20 Sonic?
The Roborock Saros 20 Sonic, unless you truly do not want a mop. It adds mopping with dock washing and drying, 36,000 Pa against 13,000 Pa, 190 minutes against 120, and a 79.8 mm body. The iRobot Roomba Max 705 is the more affordable vacuum-only robot with a self-empty dock.
What is the biggest difference between the iRobot Roomba Max 705 and the Roborock Saros 20 Sonic?
The mop. The Roborock Saros 20 Sonic vacuums and mops, and the dock washes and dries the pads. The iRobot Roomba Max 705 does not mop. Suction and runtime follow: 36,000 Pa and 190 minutes against 13,000 Pa and 120 minutes.
Does the iRobot Roomba Max 705 mop, or only the Roborock Saros 20 Sonic?
Only the Roborock Saros 20 Sonic mops. The iRobot Roomba Max 705 is vacuum only, with a self-empty dock, LiDAR mapping and Carpet Boost. Both work with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter.
Which robot vacuum fits under low furniture?
The Roborock Saros 20 Sonic, at 79.8 mm tall, against 104 mm for the iRobot Roomba Max 705. That gap is what decides whether a low sofa or bed frame is inside the map or a permanent skip.
Who should buy the Roborock Saros 20 Sonic?
Homes that want one robot to vacuum and mop, with 36,000 Pa, a 190 minute battery, a short body and a dock that washes and dries the mop, including buyers on Apple Home or Matter.
Who should buy the iRobot Roomba Max 705?
Carpet-heavy homes that only need vacuuming, want a self-empty dock and LiDAR maps, and prefer the more affordable robot without a mop to maintain.
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