iRobot Roomba 205 DustCompactor Combo vs Roborock Saros Z70
Researched by Riley Hart · prices checked Nov 11, 2026
As of Nov 11, 2026, the iRobot Roomba 205 DustCompactor Combo costs $470 and the Roborock Saros Z70 has no store price on file. The Roborock Saros Z70 scores higher in our ranking (5.9 vs 5.8 out of 10). Pick the iRobot Roomba 205 DustCompactor Combo for small spaces with no room for a dock. Pick the Roborock Saros Z70 for early adopters with mostly hard floors. They split the points we can measure, 1 each.
Who wins, point by point
They split the points we can measure, 1 each. Built from today's prices, the specs and independent tests for these two robots.
| iRobot Roomba 205 DustCompactor Combo | Saros Z70 | Winner | |
|---|---|---|---|
| Onboard bin | 1.5 L | 180 mL | iRobot Roomba 205 DustCompactor Combo |
| Robot height (fits under furniture) | 3.98 in | 3.14 in | Saros Z70 |
- You care most about onboard bin (1.5 L vs 180 mL)
- Best for small spaces with no room for a dock
- You care most about robot height (fits under furniture) (3.14 in vs 3.98 in)
- Best for early adopters with mostly hard floors
- Suction
- iRobot claims 70x
- Navigation
- ClearView LiDAR
- Mopping
- Reusable microfiber pad
LiDAR Roomba that compacts dirt onboard instead of using a big dock
Full iRobot Roomba 205 DustCompactor Combo review, pros and cons →- Suction
- 22,000 Pa
- Navigation
- StarSight 2.0 camera
- Mopping
- Yes
- Runtime
- 6,400 mAh battery
Slim Roborock flagship with a folding arm that picks up small items off the floor
Full Roborock Saros Z70 review, pros and cons →Side by side
| iRobot Roomba 205 DustCompactor Combo | Roborock Saros Z70 | |
|---|---|---|
| Price | $470 | n/a |
| 3 year cost | $470 | n/a |
| Our score | 5.8/10 | 5.9/10 |
| Rank in Floors | #49 | #48 |
| Status | on sale | on sale |
| Warranty | n/a | 1 year limited per Roborock US store listings for its other robot vacuums; the Saros Z70 US page was not reachable to confirm |
| Suction | iRobot claims 70x the suction of Roomba 600 series, 4 levels; no Pa figure published | 22,000 Pa (brand claim); Vacuum Wars measured 0.3 kPa at the intake, below average, and 16 CFM airflow |
| Navigation | ClearView LiDAR, up to 3 maps (iRobot) | StarSight 2.0 camera and 3D ToF system with no LiDAR turret |
| Obstacle avoidance | Basic; TechRadar saw it push toys and drag a cable, Tech Advisor saw it suck up a glove and get stuck | AI object recognition with VertiBeam side sensing; Vacuum Wars scored 22 of 24 |
| Mopping | Reusable microfiber pad with Carpet Detect to avoid rugs (iRobot); Tech Advisor found it mostly spread mess | Yes, dual spinning pads with an extending pad, 22 mm lift on carpet, pads detach for vacuum only runs |
| Self empty | No dock emptying; compacts debris onboard, claimed up to 60 days (iRobot); TechRadar needed to empty it after 8 days | Yes, into a disposable bag (2.7 L per Vacuum Wars, 2.5 L per TechRadar) |
| Dock features | Small charging base only (Tech Advisor) | Washes pads with 176°F water, dries at 131°F, doses detergent; 4 L clean and 3 L dirty tanks |
| Runtime | Not published; iRobot says it covers up to 1,000 sq ft | 6,400 mAh battery, 180 min official runtime per Vacuum Wars; Vacuum Wars estimated 1,115 sq ft per charge |
| Dustbin | About 1.5 L compacting bin (TechRadar, Tech Advisor) | 180 mL onboard bin, the smallest Vacuum Wars has tested |
| Height | 3.98 in (robot 14.1 x 14.09 x 3.98 in, iRobot) | 3.14 in per Android Authority and Vacuum Wars |
| Pet hair | No measured pet hair result published in the reviews we read | Vacuum Wars measured 83% flattened pet hair pickup against a 92% average, and hair still tangled |
| App | Roomba Home app; works with Alexa, Siri and Google Assistant (iRobot) | Roborock app with remote arm control, multi floor maps and pet features |
| Threshold | Not published | Up to 1.57 in (40 mm) per Roborock as reported by Android Authority and TechRadar |
| Noise | TechRadar measured an average of 78 dB from five feet | n/a |
| Best for | small spaces with no room for a dock | early adopters with mostly hard floors |
| Skip if | you want real mopping or good obstacle avoidance | you have a lot of carpet |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
iRobot Roomba 205 DustCompactor Combo
- TechRadar (Performance 2.5/5): Measured an average of 78 dB from five feet. The roughly 1.5 L bin needed emptying after eight days. It pushed aside toys and dragged a phone cable. Called a crushing disappointment. Source
- Tech Advisor: Good carpet cleaning and LiDAR navigation, but mopping mostly spread mess and it got stuck on furniture bases and thin table legs. Source
Roborock Saros Z70
- TechRadar: Vacuuming was excellent on carpet and lino and mopping strong at edges, but the arm had no fully successful autonomous pickup and the review unit rattled while cleaning. Source
- Vacuum Wars (3.17/5): Lab tests found top tier mopping with a combined score of 269 against a 171 average and 22 of 24 obstacles avoided, but only 67% sand removal from carpet and 83% pet hair pickup; the arm worked about half the time. Source
Questions buyers ask
Which is better, the iRobot Roomba 205 DustCompactor Combo or the Roborock Saros Z70?
The Roborock Saros Z70 scores higher in our ranking (5.9 vs 5.8 out of 10). Pick the iRobot Roomba 205 DustCompactor Combo for small spaces with no room for a dock. Pick the Roborock Saros Z70 for early adopters with mostly hard floors.
What is the difference between the Roomba 205 DustCompactor Combo and the Saros Z70?
Suction: iRobot claims 70x the suction of Roomba 600 series, 4 levels; no Pa figure published on the Roomba 205 DustCompactor Combo, 22,000 Pa (brand claim); Vacuum Wars measured 0.3 kPa at the intake, below average, and… on the Saros Z70. Navigation: ClearView LiDAR, up to 3 maps (iRobot) on the Roomba 205 DustCompactor Combo, StarSight 2.0 camera and 3D ToF system with no LiDAR turret on the Saros Z70. Obstacle avoidance: Basic; TechRadar saw it push toys and drag a cable, Tech Advisor saw it suck up a glove… on the Roomba 205 DustCompactor Combo, AI object recognition with VertiBeam side sensing; Vacuum Wars scored 22 of 24 on the Saros Z70.
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