Robot Vacuums · Head to head

iRobot Roomba Max 705 Combo vs Shark PowerDetect ThermaCharged RV2920XE

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from Amazon and official iRobot and Shark sites.
2026 verdict
Both wash their mops, so what tips it? The Shark PowerDetect ThermaCharged RV2920XE is the better robot vacuum and mop of the two, with 180 minutes of runtime and a two-year warranty.
Shark PowerDetect ThermaCharged RV2920XE
Winner
Shark PowerDetect ThermaCharged RV2920XE
$1089.95$1199.999% OFF

Last recorded price

Buy on Amazon USA
The iRobot Roomba Max 705 Combo lasts 120 minutes per charge and carries one year of cover, but it answers with the wider smart home reach: Apple Home, SmartThings and Matter on top of Alexa, Google Home and Home Assistant, plus 5 GHz Wi-Fi, Bluetooth, a child lock and a dock that doses detergent on its own. Both map with LiDAR, lift the mop over carpet and empty themselves. Pick the Shark PowerDetect ThermaCharged RV2920XE to cover a whole home on one charge, and the iRobot Roomba Max 705 Combo if the robot has to live inside an Apple Home or Matter setup.
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FeatureiRobot Roomba Max 705 ComboShark PowerDetect ThermaCharged RV2920XEWinner
Price$799.00$1089.95iRobot Roomba Max 705 Combo
Rating3.64.2Shark PowerDetect ThermaCharged RV2920XE
Warranty1 year2 yearsShark PowerDetect ThermaCharged RV2920XE
Battery Life120 minutes180 minutesShark PowerDetect ThermaCharged RV2920XE
Connectivity2.4 GHz WiFi, 5 GHz WiFi, Bluetooth2.4 GHz WiFiiRobot Roomba Max 705 Combo
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Home AssistantiRobot Roomba Max 705 Combo
Auto RechargeYESYESTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie
No-Go ZonesYESYESTie

What the differences mean

Runtime per charge

The Shark PowerDetect ThermaCharged RV2920XE is rated for 180 minutes, the iRobot Roomba Max 705 Combo for 120. In a larger home that is the difference between one continuous run and a stop at the dock to recharge before the job is finished.

Smart home platforms

Both work with Alexa, Google Home and Home Assistant. Only the iRobot Roomba Max 705 Combo adds Apple Home, SmartThings and Matter, so it is the one that fits a home built around Siri or a Matter controller.

Detergent handling

The iRobot Roomba Max 705 Combo dock doses cleaning solution automatically. The Shark PowerDetect ThermaCharged RV2920XE accepts detergent but has no automatic dispenser, so solution goes into the tank by hand.

Warranty

Shark covers the Shark PowerDetect ThermaCharged RV2920XE for two years, iRobot covers the iRobot Roomba Max 705 Combo for one. On a robot with a washing dock and water pumps, the extra year is worth having.

Wi-Fi and pairing

The iRobot Roomba Max 705 Combo supports 5 GHz Wi-Fi and Bluetooth, while the Shark PowerDetect ThermaCharged RV2920XE is 2.4 GHz only. On a mixed dual-band router, the Roomba has fewer ways to trip up during setup.

Which one to buy if

iRobot

iRobot Roomba Max 705 Combo

39% OFF
Prime exclusive deal
$799.00
$1299.99

Last recorded price

Buy on Amazon USA
  • + Price: $799.00
  • + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
  • + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • - Rating: 3.6 vs 4.2
  • - Warranty: 1 year vs 2 years

What owners say

Owners of both robots describe the same pattern: excellent results on the days it works, and a dock that becomes the weak point. Shark PowerDetect ThermaCharged RV2920XE owners single out finishing the whole home on a single charge when it only vacuums, mopping they call outstanding on wood and tile, quiet runs and floor-type detection, while their complaints are the robot failing to leave or return to the dock, false mop obstruction alerts and water dispensing that stops on some units. iRobot Roomba Max 705 Combo owners praise the wood-front design, LiDAR mapping they call scarily accurate and an extending roller mop that reaches edges, but many report false bin and dirty water errors, leaking docks, streaks on the floor and a buggy app with broken schedules.

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 Max 705 Combo
  • Shark PowerDetect ThermaCharged RV2920XE

Loading price history...

Frequently Asked Questions

Which is better overall: iRobot Roomba Max 705 Combo or Shark PowerDetect ThermaCharged RV2920XE?

The Shark PowerDetect ThermaCharged RV2920XE, for most homes. It runs 180 minutes against 120, carries a two-year warranty against one, and mops with a heated wash and dry at the base. The iRobot Roomba Max 705 Combo is the better fit only when Apple Home, SmartThings or Matter support matters.

What is the biggest difference between the iRobot Roomba Max 705 Combo and the Shark PowerDetect ThermaCharged RV2920XE?

Runtime against platform support. The Shark PowerDetect ThermaCharged RV2920XE lasts longer per charge, while the iRobot Roomba Max 705 Combo works with Apple Home, SmartThings and Matter as well as Alexa, Google Home and Home Assistant, and doses detergent automatically.

Do both robots mop and clean their own mop?

Yes. The iRobot Roomba Max 705 Combo and the Shark PowerDetect ThermaCharged RV2920XE both mop, wash and dry the mop at the dock, lift it over carpet and empty their own dustbin. Only the Roomba also dispenses detergent automatically.

Does the Shark PowerDetect ThermaCharged RV2920XE work with Apple Home?

No. The Shark PowerDetect ThermaCharged RV2920XE works with Alexa, Google Home and Home Assistant, but not with Apple Home, SmartThings or Matter. The iRobot Roomba Max 705 Combo supports all six.

Who should buy the iRobot Roomba Max 705 Combo?

Homes built around Apple Home, SmartThings or Matter that want a LiDAR robot with a self-washing roller mop, automatic detergent dosing and a child lock, and that can live with a 120 minute battery and one year of warranty.

Who should buy the Shark PowerDetect ThermaCharged RV2920XE?

Anyone who wants a self-washing, self-emptying robot that covers a whole home on one charge when vacuuming, with two years of warranty, and whose smart home runs on Alexa, Google Home or Home Assistant.

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