Robot Vacuums · Head to head

Narwal Flow vs Shark PowerDetect ThermaCharged RV2920XE

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from Amazon and official Narwal and Shark sites.
2026 verdict
Both of these robot vacuums wash and dry their own mop pad at the dock, but only the Narwal Flow carries that into a wider smart home.
Narwal Flow
Winner
Narwal Flow
$999.99

Last recorded price

Buy on Amazon USA
It is the pick of this pairing on owner rating, runtime and platform reach, while the Shark PowerDetect ThermaCharged RV2920XE answers with Google Home, Alexa and Home Assistant support, a two-year warranty and a typically lower price. Owners of both praise the heated mop wash and how quietly each one runs, but the Narwal Flow is Matter certified, which is what adds Apple Home and Samsung SmartThings on top of a longer 200-minute runtime and a faster 3-hour charge. Carpet is where the Narwal Flow's own owners report friction, with the app sometimes reading a rug as bare floor, a comparison the Shark's spec sheet cannot settle since several of its own measurements, including suction and noise, are not published. Pick the Narwal Flow for the wider smart home reach and the better-reviewed machine, and the Shark PowerDetect ThermaCharged RV2920XE for the lower price and the longer warranty.
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FeatureNarwal FlowShark PowerDetect ThermaCharged RV2920XEWinner
Price$999.99$1089.95Narwal Flow
Rating4.44.2Narwal Flow
Warranty1 year2 yearsShark PowerDetect ThermaCharged RV2920XE
Battery Life200 minutes180 minutesNarwal Flow
Connectivity2.4 GHz WiFi, 5 GHz WiFi, Bluetooth2.4 GHz WiFiNarwal Flow
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Home AssistantNarwal Flow
Auto RechargeYESYESTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie
No-Go ZonesYESYESTie

What the differences mean

Smart home reach

The Narwal Flow is Matter certified, which is what lets it join Apple Home and Samsung SmartThings on top of Google Home, Alexa and Home Assistant. The Shark PowerDetect ThermaCharged RV2920XE reaches only Google Home, Alexa and Home Assistant through its own Shark IQ integration, with no Matter path to the other two.

Warranty

The Shark PowerDetect ThermaCharged RV2920XE ships with a 2-year warranty, twice the Narwal Flow's 1 year, worth weighing against the docking and water-dispensing issues a share of Shark owners report.

Runtime and charging

The Narwal Flow runs about 200 minutes on a charge and recharges in roughly 3 hours. The Shark PowerDetect ThermaCharged RV2920XE is rated for 180 minutes and takes about 4 hours to top up, a gap that adds up over a week of daily runs.

Wi-Fi and Bluetooth

The Narwal Flow joins both 2.4 GHz and 5 GHz Wi-Fi networks and pairs over Bluetooth. The Shark PowerDetect ThermaCharged RV2920XE is 2.4 GHz only with no Bluetooth radio, which matters most on a router that keeps its bands separate.

Price

The Shark PowerDetect ThermaCharged RV2920XE is typically the more affordable of the two, a gap worth weighing against the Narwal Flow's longer runtime and wider smart home reach.

Which one to buy if

Winner
Narwal

Narwal Flow

Prime exclusive deal
$999.99

Last recorded price

Buy on Amazon USA
  • + Price: $999.99
  • + Rating: 4.4
  • + Battery Life: 200 minutes
  • - Warranty: 1 year vs 2 years

What owners say

Owners of both robots land on the same praise first: a mop wash hot enough to trust and a machine quiet enough to run while people are home. From there the reports split. Narwal Flow owners single out FlowWash lifting dried kitchen marks in one pass and a roller that stays free of pet hair, while a recurring complaint is the app misreading bare floor as carpet during the first few mapping runs. Shark PowerDetect ThermaCharged RV2920XE owners praise how accurately it tells hardwood from carpet and that a single charge covers a whole home when vacuuming only, but a meaningful share report the robot failing to dock reliably or the mop's water dispensing stopping within a few months, problems the Narwal Flow's own owners do not raise.

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.

  • Narwal Flow
  • Shark PowerDetect ThermaCharged RV2920XE

Loading price history...

Frequently Asked Questions

Which is better overall: Narwal Flow or Shark PowerDetect ThermaCharged RV2920XE?

The Narwal Flow, on owner rating, runtime and smart home reach: it is Matter certified and adds Apple Home and Samsung SmartThings. The Shark PowerDetect ThermaCharged RV2920XE answers with a longer warranty and a typically lower price.

What is the biggest difference between the Narwal Flow and the Shark PowerDetect ThermaCharged RV2920XE?

Smart home reach. The Narwal Flow is Matter certified, which brings in Apple Home and Samsung SmartThings alongside Google Home, Alexa and Home Assistant. The Shark PowerDetect ThermaCharged RV2920XE stops at Google Home, Alexa and Home Assistant.

Does the Shark PowerDetect ThermaCharged RV2920XE work with Apple Home?

No. It connects to Google Home, Alexa and Home Assistant through its own Shark IQ integration, but it is not Matter certified, so it has no path to Apple Home or Samsung SmartThings the way the Narwal Flow does.

Which has the longer warranty, the Narwal Flow or the Shark PowerDetect ThermaCharged RV2920XE?

The Shark PowerDetect ThermaCharged RV2920XE, covered for 2 years against the Narwal Flow's 1 year.

Who should buy the Narwal Flow?

Buyers who want the widest smart home reach, including Apple Home and SmartThings through Matter, along with the longer runtime and the better-reviewed machine of the two.

Who should buy the Shark PowerDetect ThermaCharged RV2920XE?

Buyers whose smart home stops at Google Home, Alexa or Home Assistant, and who would rather have the longer warranty and the lower price than the extra platform reach.

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