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Robot Vacuums · Head to head

iRobot Roomba 505X vs Shark PowerDetect ThermaCharged RV2920XE

Full Robot Vacuums comparison in 2026

Updated September 2026
Data from Amazon and official iRobot and Shark sites.
2026 verdict
Need the widest smart-home reach? The iRobot Roomba 505X leads this comparison, connecting to far more platforms and costing less.
iRobot Roomba 505X
Winner
iRobot Roomba 505X
$469.99$999.9953% OFF
Buy on Amazon USACheck price
It works with Apple Home, Samsung SmartThings, Home Assistant and Matter on top of Google Home and Alexa, none of which the Shark PowerDetect ThermaCharged RV2920XE supports beyond Home Assistant. The Shark PowerDetect ThermaCharged RV2920XE answers with a higher owner rating and a longer 2-year warranty, and its own trick is a 185F heated mop wash owners praise on wood and tile. Both vacuum, mop, self-empty and wash and dry their mop pads automatically, and both use the same LiDAR navigation with multi-room mapping and no-go zones. Pick the iRobot Roomba 505X for broader ecosystem support and a lower price; pick the Shark PowerDetect ThermaCharged RV2920XE if the hottest mop wash and a longer warranty matter more to you.
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FeatureiRobot Roomba 505XShark PowerDetect ThermaCharged RV2920XEWinner
Price$469.99$1099.95iRobot Roomba 505X
Rating4.24.3Shark PowerDetect ThermaCharged RV2920XE
Warranty1 year2 yearsShark PowerDetect ThermaCharged RV2920XE
Connectivity2.4 GHz WiFi, 5 GHz WiFi, Bluetooth2.4 GHz WiFiiRobot Roomba 505X
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Home AssistantiRobot Roomba 505X
Onboard Dustbin Capacity295ml379mlShark PowerDetect ThermaCharged RV2920XE
Battery Life180 minutes180 minutesTie
Auto RechargeYESYESTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie

What the differences mean

Smart home reach

The iRobot Roomba 505X works with Apple Home, Samsung SmartThings, Home Assistant and Matter on top of Google Home and Alexa. The Shark PowerDetect ThermaCharged RV2920XE adds only Home Assistant beyond Google Home and Alexa.

Wi-Fi bands

The iRobot Roomba 505X connects over both 2.4 GHz and 5 GHz networks. The Shark PowerDetect ThermaCharged RV2920XE is 2.4 GHz only, which can complicate setup on some dual-band routers.

Warranty

The Shark PowerDetect ThermaCharged RV2920XE carries a 2-year warranty against 1 year on the iRobot Roomba 505X, meaningful protection on a premium purchase.

Mop wash temperature

Shark specifically rates its ThermaCharged wash at 185F, which owners credit with the difference between a pad that cleans and one that smears. The iRobot Roomba 505X's AutoWash dock also washes the pads, but its temperature is not published.

Price

The iRobot Roomba 505X is typically the more affordable of the two, on top of already winning the integrations list.

Which one to buy if

Winner
iRobot

iRobot Roomba 505X

53% OFF
$469.99
$999.99
Buy on Amazon USACheck price
  • + Price: $469.99
  • + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
  • + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • - Rating: 4.2 vs 4.3
  • - Warranty: 1 year vs 2 years

What owners say

Owners of both robots praise the mop-washing dock, but flag different failure points. iRobot Roomba 505X owners like how little manual work the AutoWash dock leaves, refilling its own water and washing and drying the pads, and are pleased with pet hair pickup on hardwood and tile, though several call the cleaning cycle loud enough to avoid running while home, and a few hit fiddly Wi-Fi pairing or a mapping reset. Shark PowerDetect ThermaCharged RV2920XE owners go further on the mopping itself, repeatedly calling the 185F wash the reason a pad cleans instead of smearing, and describe whole-home coverage on a single charge when vacuuming only, but a recurring group reports the robot failing to dock reliably, the self-clean cycle falsely reporting an obstruction, and water dispensing stopping entirely on some units within months.

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
  • Shark PowerDetect ThermaCharged RV2920XE

Loading price history...

Frequently Asked Questions

Which is better overall: the iRobot Roomba 505X or the Shark PowerDetect ThermaCharged RV2920XE?

The iRobot Roomba 505X wins overall on smart-home breadth and price, though the Shark PowerDetect ThermaCharged RV2920XE holds a higher owner rating and a longer warranty.

What is the biggest difference between the iRobot Roomba 505X and the Shark PowerDetect ThermaCharged RV2920XE?

Smart-home support. The iRobot Roomba 505X works with Apple Home, Samsung SmartThings, Home Assistant and Matter. The Shark PowerDetect ThermaCharged RV2920XE supports only Home Assistant beyond Google Home and Alexa.

Does the Shark PowerDetect ThermaCharged RV2920XE have any reported reliability issues?

Some owners report it occasionally failing to dock properly, the self-clean cycle falsely reporting an obstruction, and water dispensing stopping entirely on some units within months. When it works as intended, the mop washing draws strong reviews.

Which one has the longer warranty?

The Shark PowerDetect ThermaCharged RV2920XE, at 2 years against 1 year for the iRobot Roomba 505X.

Who should buy the iRobot Roomba 505X?

Buyers who want the widest smart-home integration list, a lower price, and a proven AutoWash dock for hands-off maintenance.

Who should buy the Shark PowerDetect ThermaCharged RV2920XE?

Buyers who prioritize heated mop-pad washing and a longer warranty, and who don't rely on Apple Home, Samsung SmartThings or Matter.

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