iRobot Roomba Max 705 Combo vs Shark PowerDetect ThermaCharged RV2920XE

The iRobot Roomba Max 705 Combo takes the overall edge, mainly on the strength of its wider smart home support, including Apple HomeKit, Home Assistant, IFTTT and Matter alongside 5GHz Wi-Fi and Bluetooth, none of which the Shark PowerDetect ThermaCharged RV2920XE offers.

Ecosystem support is the clearest divide: the Roomba Max 705 Combo works with Apple HomeKit, Home Assistant, IFTTT and Matter on top of Alexa and Google Home, while the Shark PowerDetect ThermaCharged RV2920XE is limited to Alexa and Google Home over 2.4GHz Wi-Fi only. Battery life goes the other way, with the Shark's 180 minute runtime comfortably outlasting the Roomba's 75 minutes.

The Shark PowerDetect ThermaCharged RV2920XE, with two years of coverage against the Roomba Max 705 Combo's one year. Shark owners have also reported fewer of the dock and water tank issues that some Roomba Max 705 Combo buyers have run into.

Both use an automated dock that washes and dries the mop pad without user involvement. The Roomba Max 705 Combo's AutoWash dock also dispenses detergent automatically, something the Shark PowerDetect ThermaCharged RV2920XE's NeverTouch Pro dock does not do, though the Shark compensates with a genuinely hot water wash cycle for the mop pad.

Buyers already invested in Apple HomeKit or Home Assistant, or anyone who wants the broadest possible smart home compatibility including Matter and IFTTT, since that is where this model pulls ahead of the Shark PowerDetect ThermaCharged RV2920XE.

Buyers who want to vacuum a large home on a single charge and who value a longer warranty and a track record with fewer dock complaints, since the Shark PowerDetect ThermaCharged RV2920XE's 180 minute battery and two year warranty are its strongest selling points over the Roomba Max 705 Combo.