Roborock QV 35A vs Roborock Saros 20: which fits your home?

The published differences, side by side, with the makers’ store prices of Oct 23, 2026.

Updated Oct 23, 2026. Figures from the sources listed at the end; we don’t test robots.

Pick the Roborock QV 35A for the lower price ($449.99, Oct 23, 2026). Pick the Roborock Saros 20 for a lower body (3.14 in) and higher door sills (up to 1.77 in).

The two robots

For the lower price ($449.99, Oct 23, 2026)

Roborock QV 35A

  • LiDAR mapping
  • Structured-light sensor
  • Spinning pads
  • Full dock
  • Empties its own bin, washes its mops and refills its tank
  • Rated for door sills up to 0.79 in

$449.99at Roborock, checked Oct 23; Amazon’s may differ

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For a lower body (3.14 in)

Roborock Saros 20

  • 3D sensor and camera mapping
  • Recognizes 300+ object types
  • Spinning pads
  • Full dock
  • Rated for door sills up to 1.77 in, or two stacked sills up to 3.46 in
  • Only 3.14 in tall, for low sofas and beds

$1,599.99at Roborock, checked Oct 23; Amazon’s may differ

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Pick the Roborock QV 35A if

Pick the Roborock Saros 20 if

Published for only one of them

Side by side

Roborock QV 35ARoborock Saros 20
What the dock does
  • Full dock
  • Empties its bin into a bag
  • Washes its mops
  • Dries its mops with cold air
  • Refills the robot’s water tank
  • Full dock
  • Empties its bin into a bag
  • Washes its mops in hot water
  • Dries its mops with warm air
  • Refills the robot’s water tank
Door sills
0.79 in (20 mm)1.77 in single, 3.46 in for two stacked sills
Robot height
3.8 in3.14 in
Rugs and carpet
Not publishedCarpet pile up to 1.18 in
Mop
Spinning padsSpinning pads
Mop on carpet
Lifts its mops (height not published)Lifts or detaches its mops (by mode) and lifts its chassis
Mop wash water
No hot water listedUp to 212°F
Mop drying
Cold airWarm air, 131°F
Suction (maker’s figure)
8,000 Pa36,000 Pa
Noise (maker’s figure)
Not publishedNot published
Navigation
LiDARCamera and 3D time-of-flight
Obstacle recognition
Structured light; no camera listedStructured light, RGB camera and side laser; 300+ object types
Edges and corners
Arc-shaped side brushFlexiArm extends the side brush and mop into corners
Main brush
All-rubber anti-tangle brushDuoDivide anti-tangle main brush
Dust storage in dock
Not publishedUp to 65 days
Warranty
1 year1 year
Matter
Not statedWorks with Matter
On sale in the US since
May 2025March 23, 2026

Questions

Which is cheaper, the Roborock QV 35A or the Roborock Saros 20?

The Roborock QV 35A: $449.99 at Roborock, against $1,599.99 at Roborock (checked Oct 23, 2026).

Which fits under lower furniture?

The Roborock Saros 20, at 3.14 in tall; the Roborock QV 35A is 3.8 in.

Which climbs higher door sills?

The Roborock Saros 20, rated for sills up to 1.77 in; the Roborock QV 35A is rated up to 0.79 in.

What do their docks do?

The Roborock QV 35A has a full dock that empties the bin, washes the mops and refills the water tank. The Roborock Saros 20 has a full dock that empties the bin, washes the mops and refills the water tank.

How do they mop?

The Roborock QV 35A: spinning pads. The Roborock Saros 20: spinning pads.

Check both against your home
Sources