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- RVF 7 Comfort vs Saros 20 Flow
Kärcher RVF 7 Comfort vs Roborock Saros 20 Flow
What RVF 7 Comfort does better (2) and where Saros 20 Flow wins (7) — every spec side by side.
vs
6.1Cleaning power8.3
7.3Navigation9.3
9.7Mopping9.6
6.4Base station6.0
6.1Battery9.8
Dimensions
Size comparison
RVF 7 ComfortSaros 20 Flow
| RVF 7 Comfort | Saros 20 Flow | Difference | |
|---|---|---|---|
| Height | 105 mm | 90 mm | +15 mm |
| Width / diameter | 360 mm | 353 mm | +7 mm |
| Length | 360 mm | 353 mm | +7 mm |
| Weight | 5.6 kg | 5 kg | +0.6 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is RVF 7 Comfort better than Saros 20 Flow?
- Dust bag (dock)4 l vs 2.7 l+48%
- Dustbin (robot)250 ml vs 245 ml+2%
Why is Saros 20 Flow better than RVF 7 Comfort?
- Suction power13,000 Pa vs 36,000 Pa2.8×
- Runtime150 min vs 300 min2×
- Threshold climbing18 mm vs 88 mm4.9×
- Battery capacity5,200 mAh vs 6,400 mAh+23%
- Height105 mm vs 90 mm+17%
- Charging time230 min vs 150 min+53%
- Clean water tank (dock)3 l vs 4 l+33%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 13,000 Pa | 36,000 Pa |
| Dustbin (robot) | 250 ml | 245 ml |
| Main brush | Single main brush | Single main brush |
| Anti-tangle brush | Yes | Yes |
| Side brushes | 2 | 2 |
| Extending side brush | — | Yes |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | Yes |
| Noise level | 67 dB | 67 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors | LiDAR laser (LDS), Retractable LiDAR, Wall sensor, Cliff sensors |
| Retractable LiDAR | — | Yes |
| Obstacle avoidance | AI camera | AI camera |
| Threshold climbing | 18 mm | 88 mm |
| No-go zones / virtual walls | — | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Roller mop | Roller mop |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | — | 15 mm |
| Extending mop (edges) | — | Yes |
| Water tank (robot) | 130 ml | — |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | All-in-one dock (empty + wash) |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 4 l | 2.7 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | Yes | Yes |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Clean water tank (dock) | 3 l | 4 l |
| Dirty water tank (dock) | 2.4 l | — |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 6,400 mAh |
| Runtime | 150 min | 300 min |
| Charging time | 230 min | 150 min |
| Cleaning area per charge | — | 200 m² |
| Size & weight | ||
| Width / diameter | 360 mm | 353 mm |
| Length | 360 mm | 353 mm |
| Height | 105 mm | 90 mm |
| Weight | 5.6 kg | 5 kg |
| Shape | Round | Round |
| Colours | White, Black | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | — | Amazon Alexa, Google Assistant, Apple Siri |
| Matter | — | Yes |
| Live camera view / video call | Yes | Yes |
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