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Robot Vacuums · Head to head

iRobot Roomba Plus 505 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
Mixed carpet and hard floor in an Apple home favor the iRobot Roomba Plus 505.
iRobot Roomba Plus 505
Winner
iRobot Roomba Plus 505
$695.00$999.9930% OFF
Buy on Amazon USACheck price
It adds 5 GHz Wi-Fi, Apple Home, SmartThings and Matter, and it is the more affordable robot that still washes and dries a mop. The Shark PowerDetect ThermaCharged RV2920XE answers with a 2 year warranty and 185 F mop washing that owners like on wood and tile. Favor the iRobot Roomba Plus 505 for the apps and the price. Favor the Shark PowerDetect ThermaCharged RV2920XE when heated water and the extra warranty year win.
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FeatureiRobot Roomba Plus 505Shark PowerDetect ThermaCharged RV2920XEWinner
Price$695.00$1099.95iRobot Roomba Plus 505
Rating4.24.3Shark PowerDetect ThermaCharged RV2920XE
Warranty1 year2 yearsShark PowerDetect ThermaCharged RV2920XE
Connectivity2.4 GHz WiFi, 5 GHz WiFi, Bluetooth2.4 GHz WiFiiRobot Roomba Plus 505
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Home AssistantiRobot Roomba Plus 505
Battery Life180 minutes180 minutesTie
Auto RechargeYESYESTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie
No-Go ZonesYESYESTie

What the differences mean

Smart home and Wi-Fi

The iRobot Roomba Plus 505 supports 5 GHz Wi-Fi, Apple Home, SmartThings and Matter, plus Alexa, Google Home and Home Assistant. The Shark PowerDetect ThermaCharged RV2920XE supports Alexa, Google Home and Home Assistant on 2.4 GHz only, and does not support Apple Home, SmartThings or Matter. An Apple household is finished with this comparison at that row.

Heated wash and warranty

The Shark PowerDetect ThermaCharged RV2920XE washes the mop at 185 F and is covered for 2 years. The iRobot Roomba Plus 505 washes and dries the mop and lifts it, with a 1 year warranty and no automatic detergent dispenser. Heat and the extra warranty year are the Shark's case. The apps and the price are the Roomba's.

Battery is a tie on the sheet

Both are rated for 180 minutes, so a whole-home vacuum pass does not belong to either robot on runtime alone. The iRobot Roomba Plus 505 charges in about 4.5 hours. The Shark PowerDetect ThermaCharged RV2920XE charges in about 4 hours. That half hour is not why you pick. The child lock is more concrete: the Roomba has one, and the Shark does not.

Onboard bin

The Shark PowerDetect ThermaCharged RV2920XE holds 379 ml on the robot before the dock takes over. Both robots self-empty, wash, dry and lift the mop, so the onboard bin only matters when a run is long enough to fill it away from the base. The Roomba's listed suction is 7,000 Pa. The pair still separates on apps and heat, not on whether a dock exists.

Which one to buy if

Winner
iRobot

iRobot Roomba Plus 505

30% OFF
$695.00
$999.99
Buy on Amazon USACheck price
  • + Price: $695.00
  • + 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 want the dock to deal with a mop, then they hit different faults. iRobot Roomba Plus 505 owners praise fast maps, pet-hair pickup on carpet and hard floors, and obstacle avoidance around cords, while they say the dock cycle is loud and some units pick up navigation or bumper-stuck errors after a few months. Shark PowerDetect ThermaCharged RV2920XE owners single out 185 F washing on wood and tile, a long vacuum-only pass, and quiet floor-type detection, and they complain about failed dock departures and returns, false obstruction warnings during mop cleaning, and water dispensing that stops on some units.

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 Plus 505
  • Shark PowerDetect ThermaCharged RV2920XE

Loading price history...

Frequently Asked Questions

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

The iRobot Roomba Plus 505. It is the more affordable, it supports 5 GHz Wi-Fi, Apple Home, SmartThings and Matter, and it still washes and dries a mop. The Shark PowerDetect ThermaCharged RV2920XE is the pick for 185 F mop washing and a 2 year warranty. Both are rated for 180 minutes.

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

Smart home, then heat. The iRobot Roomba Plus 505 adds Apple Home, SmartThings, Matter and 5 GHz Wi-Fi. The Shark PowerDetect ThermaCharged RV2920XE adds 185 F mop washing and a 2 year warranty, and it has no child lock. Both self-empty and both wash and dry the mop.

Does the Shark PowerDetect ThermaCharged RV2920XE work with Apple Home?

No. The Shark PowerDetect ThermaCharged RV2920XE supports Alexa, Google Home and Home Assistant only. The iRobot Roomba Plus 505 supports those three plus Apple Home, SmartThings, Matter and 5 GHz Wi-Fi. Neither is a vacuum-only robot.

Which robot vacuum has the longer warranty?

The Shark PowerDetect ThermaCharged RV2920XE, at 2 years against 1 year for the iRobot Roomba Plus 505. Runtime matches at 180 minutes. The Roomba is the more affordable and the one with a child lock and Apple Home.

Who should buy the iRobot Roomba Plus 505?

Apple Home or Matter households that want a mop the dock washes, 5 GHz Wi-Fi and a child lock, at the lower price.

Who should buy the Shark PowerDetect ThermaCharged RV2920XE?

Wood and tile homes that want 185 F mop washing and a 2 year warranty, and that do not need Apple Home, SmartThings, Matter or a child lock.

Full comparison table

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