It makes sense comparing iRobot Roomba S9plus vs iRobot Roomba S9 because they both are able to give some premium features. Based on our rating, Roomba S9plus has the overall rating of 8.5 out of 10 versus 9 for Roomba S9.
Advantages iRobot Roomba S9plus over iRobot Roomba S9
Advantages iRobot Roomba S9 over iRobot Roomba S9plus
Better battery life, 120 min vs 60 min
Common features and specifications
The same suction power: 2000 PA
Equal noise level: 70 dB
Both robot vacuums are Wi-Fi enabled
Equal dust bin capacity: 400 ml
Dry cleaning mode
A Virtual Wall creates an invisible barrier that robot vacuums won't cross
Both robot vacuums use smart path planning to clean more efficient
One side brush
Single room mode
Intensive clean mode
Vacuums sizes is the same: 30.9 x 8.8/12.2 x 3.5 (D x H) cm/inches. The weight is identical and equal to 3.6/8.1 kg/lbs.