iRobot Roomba Max 705 Combo vs iRobot Roomba Plus 505

The iRobot Roomba Plus 505 is the better all-round pick, with a longer 120-minute runtime and typically a lower price. The iRobot Roomba Max 705 Combo answers with stronger 13000Pa suction, Bluetooth connectivity and an auto-detergent dispenser, so it suits buyers who value raw cleaning power over runtime and cost.

Suction versus runtime. The Max 705 Combo vacuums at 13000Pa but only runs 75 minutes per charge, while the Roomba Plus 505 vacuums at 7000Pa but lasts 120 minutes, nearly twice as long, before it needs to recharge.

Yes, it automatically dispenses detergent for mopping, a feature the iRobot Roomba Plus 505 does not have. Both otherwise share the same auto-mop washing, auto-mop drying and self-emptying AutoWash dock design.

Yes. Both the iRobot Roomba Max 705 Combo and the iRobot Roomba Plus 505 work with Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant and Matter, so platform support is identical between them.

Choose the iRobot Roomba Max 705 Combo if you want the strongest suction available in this pairing, plus Bluetooth and automatic detergent dispensing, and can accept a shorter 75-minute runtime and typically a higher price.

Choose the iRobot Roomba Plus 505 if you want a longer 120-minute runtime and typically lower price while keeping the same LiDAR mapping, self-washing mop dock and smart-home support as the Max 705 Combo.