iRobot Roomba 770 review

Although iRobot's product line is rather simple and straightforward, it can be confusing and overwhelming to those who just want to pick the right robot for themselves. The robots look almost the same, and most of their key features are identical. The detailed specifications reveal most of the differences, but they don't always make sense to inexperienced buyers. In this review I will do my best to highlight all the differences between the two most advanced Roomba models.

Design and Technology

Because the Roomba 770 and the Roomba 780 models are based on the very same technology, I will make this review as short as possible. Those who have missed my iRobot Roomba 780 review should spend a few minutes to get to know that robot a little better before reading about the differences.

iRobot Roomba 770iRobot Roomba 780
iRobot Roomba 770iRobot Roomba 780

Differences between the Roomba 770 and Roomba 780

The first noticeable difference is the color: while the Roomba 780 comes in a gray/black combination, the Roomba 770 has a full black outfit, and the high-tech touch sensitive user interface has been replaced with a more traditional button-based control panel. The functions available on the two robots, and the display details (numbers, icons, etc.) are identical on the two.

iRobot Roomba 770

Those who have read the Roomba 780 review probably saw that the spare filters and brushes that came with the high-end model are missing from the Roomba 770. This bundle alone makes up approximately half of the price difference of the models.

iRobot Roomba 770 button based interface

While the color and user interface are mostly aesthetic differences, and the spare accessories can be purchased anytime later, the Lighthouse support is something that the potential buyers have to decide on. The Roomba 780 comes with two Virtual Wall Lighthouses, the Roomba 770 box includes only one or two Virtual Walls. To make matters worse, Lighthouses are only supported by the Roomba 780 robot; therefore Lighthouses bought later will not be recognized by the Roomba 770 (and Roomba 760).

Why is it important? Lighthouses are small gatekeepers that block doorways for approximately 25 minutes to keep the vacuum cleaning robot in a certain area. This gives enough time for the Roomba to cover that area before it moves to the next room. Without these IR towers the robot will go in and out of each room several times during the program, which makes covering the entire floor in houses with complicated floor plans a lot more difficult. In small houses, or if you only intend to regularly clean a smaller area of the house (or apartment) separately, the Roomba 770 will have no problems, but if the area is larger than ~50 sq m (or ~500 sq ft) and/or consists of more than two rooms, I would definitely recommend buying the Roomba 780.

iRobot Roomba 760iRobot Roomba 770
iRobot Roomba 760iRobot Roomba 770

Differences between the Roomba 760 and Roomba 770

Both Roomba 770 and 780 models use the Dirt Detect 2 (DD2) technology and sport a Full Bin indicator. These features are missing from the Roomba 760 robot. DD2 can detect both small and large particles to recognize dirtier spots and initiate some sort of a spot cleaning.

Common features of the Roomba 700 series

On the bottom all three models look the same

All three of the currently available 700 series Roombas come with the new AeroVac Series 2 bin and use two HEPA filters to screen the air blown back to the room. The redesigned cleaning head module (CHM) has a better protection against the debris (especially hair) entering the gearbox. Scheduling has become a standard feature, and a simple remote control is now included with all three of the Roomba 700 series robots.

iRobot Roomba 770 AeroVac 2 duist bin and HEPA filters
iRobot Roomba 770 CHM

Since all cleaning technology of the Roomba 770 is the same as that of the Roomba 780, I would recommend reading my in-depth review of the iRobot Roomba 780.

The review is not over yet!

Next page: Roomba buying guide

Next page »
  1. Introduction
  2. Design and Technology
  3. Roomba buying guide

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