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Full Robot Vacuums comparison in 2026
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| Feature | Roborock Saros 20 | Shark PowerDetect ThermaCharged RV2920XE | Winner |
|---|---|---|---|
| Price | $1479.99 | $1099.95 | Shark PowerDetect ThermaCharged RV2920XE |
| Rating | 4.2 | 4.3 | Shark PowerDetect ThermaCharged RV2920XE |
| Warranty | 1 year | 2 years | Shark PowerDetect ThermaCharged RV2920XE |
| Battery Life | 200 minutes | 180 minutes | Roborock Saros 20 |
| Connectivity | 2.4 GHz WiFi, 5 GHz WiFi | 2.4 GHz WiFi | Roborock Saros 20 |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Home Assistant | Roborock Saros 20 |
| Onboard Dustbin Capacity | 259ml | 379ml | Shark PowerDetect ThermaCharged RV2920XE |
| Auto Recharge | YES | YES | Tie |
| Navigation Type | Laser (LiDAR) | Laser (LiDAR) | Tie |
| Obstacle Detection | YES | YES | Tie |
| Cliff Detection | YES | YES | Tie |
| Multi-Room Mapping | YES | YES | Tie |
The Shark PowerDetect ThermaCharged RV2920XE carries a two-year warranty and a 379 ml onboard bin. The Roborock Saros 20 carries a one-year warranty and a 259 ml bin, with a documented 2.5L dock bag. Shark's dock bag size is not documented. Both still self-empty, so the bin size is what the robot holds between trips to the base.
The Roborock Saros 20 publishes 36,000 Pa. The Shark PowerDetect ThermaCharged RV2920XE does not publish a suction figure, so this comparison cannot call either one ahead on airflow. What is known is the runtime: 200 minutes for the Roborock and 180 minutes for the Shark.
The Roborock Saros 20 supports 5 GHz Wi-Fi, a child lock, Apple Home, SmartThings and Matter, plus Alexa, Google Home and Home Assistant. The Shark PowerDetect ThermaCharged RV2920XE is 2.4 GHz only, has no child lock, and does not support Apple Home, SmartThings or Matter. It does work with Alexa, Google Home and Home Assistant.
The Roborock Saros 20 doses detergent automatically and lists a 4L water tank. The Shark PowerDetect ThermaCharged RV2920XE does not have an automatic dispenser, and its tank size is not documented. Both wash and dry the mop and both lift it. Shark owners specifically praise heated washing at the base.
The Shark PowerDetect ThermaCharged RV2920XE has a two-year warranty and is the more affordable robot vacuum in this pair.
The Roborock Saros 20 has all three. The Shark PowerDetect ThermaCharged RV2920XE has none of them.
The Roborock Saros 20 is rated at 36,000 Pa. The Shark PowerDetect ThermaCharged RV2920XE does not publish a Pascal figure.
The Roborock Saros 20 has a child lock. The Shark PowerDetect ThermaCharged RV2920XE does not.
The two owner groups are happy about mopping and annoyed about different failures. Roborock Saros 20 owners praise 36,000 Pa on embedded dust and pet hair, a very low body, a quiet overnight run, and obstacle avoidance around cables. They complain about the price, detergent that is not in the box, threshold climbs that are inconsistent, and a battery that drops faster on a deep carpet run. Shark PowerDetect ThermaCharged RV2920XE owners single out heated mop washing and wood and tile that look outstanding, plus a quiet map. Their complaints are mechanical: robots that will not leave or find the dock, a self-clean cycle that reports a blockage that is not there, and water flow that stops on some units within months.
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
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The Shark PowerDetect ThermaCharged RV2920XE, on review standing, price, a two-year warranty and a larger onboard bin. The Roborock Saros 20 is the one with 36,000 Pa, a 200 minute rating, 5 GHz Wi-Fi and Matter. Shark suction is not documented.
Smart home reach, not the mop. The Roborock Saros 20 supports Matter, Apple Home, SmartThings, a child lock and 5 GHz Wi-Fi. The Shark PowerDetect ThermaCharged RV2920XE does not. Both mop, wash, dry, lift and self-empty.
Only the Roborock Saros 20 publishes one, at 36,000 Pa. The Shark PowerDetect ThermaCharged RV2920XE leaves suction undocumented, so it is not scored as weaker. Runtime is 200 minutes for the Roborock and 180 for the Shark.
No. It works with Alexa, Google Home and Home Assistant, and it does not support Apple Home, SmartThings or Matter. The Roborock Saros 20 supports all of those, including Matter.
Buyers who want the more affordable robot vacuum, a two-year warranty, a larger onboard bin, and heated mop washing, and who are fine with Alexa, Google Home or Home Assistant on 2.4 GHz.
Buyers who want a published 36,000 Pa, Matter with Apple Home, 5 GHz Wi-Fi, a child lock and the longer 200 minute rating, and who will pay more for that.
You are looking at two of them. The full table lines up all Robot Vacuums in the catalog with the same specs, so you can filter by what you need and sort by price or rating.