Scooba 330 vs Scooba 230
images from manufacturer

* Cleaning Process:
This is one of the major difference between these two Scoobas.
The 330 features a 4 stage cleaning process: preps, washes, scrubs and dries; as for the Scooba 230, the initial preping stage was cut, it only has the last 3 stage cleaning system: wash, scrub, then lift dirty water to dry the floors.

* Size:
Another main difference is their sizes.
The Scooba 230 is smaller than the Scooba 330. The 230 has a diameter of 6.5 inches which is less than half the diameter of the Scooba 330.
So the 230 can fit tighter spaces.

* Noise Level:
The 230 is quieter than the Scooba 330.

* Area Coverage:
The 330 covers a maximum of 250 square feet per battery charge while the the 230 can clean up to 150 square ft.

* Internal Design:
The 330 uses a clean tank to hold the cleaning solution and water that Scooba uses to clean the floor, and a dirty tank to collects dirty solution from the floor, while the 230 uses bladders.

* Weight: The 330 is heavier than the 230.
Weight of the Scooba 230: 3 pounds
Weight of the Scooba 330: 8.6 pounds

* Color:
The 230 is black whereas the Scooba 330 is blue.

Do you own the iRobot Scooba 230 and 330? If yes, please share your reviews.