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- RVF 7 Comfort Extra vs S8 Pro Ultra
Kärcher RVF 7 Comfort Extra vs Roborock S8 Pro Ultra
What RVF 7 Comfort Extra does better (4) and where S8 Pro Ultra wins (5) — every spec side by side.
vs
6.1Cleaning power3.4
7.3Navigation6.8
9.7Mopping5.4
7.1Base station9.0
6.1Battery6.4
Dimensions
Size comparison
RVF 7 Comfort ExtraS8 Pro Ultra
| RVF 7 Comfort Extra | S8 Pro Ultra | Difference | |
|---|---|---|---|
| Height | 105 mm | 96 mm | +9 mm |
| Width / diameter | 360 mm | 350 mm | +10 mm |
| Length | 360 mm | 350 mm | +10 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is RVF 7 Comfort Extra better than S8 Pro Ultra?
- Suction power13,000 Pa vs 4,000 Pa3.2×
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Mop typeRoller mop vs Vibrating / sonic mop
- Charging time230 min vs 360 min+57%
Why is S8 Pro Ultra better than RVF 7 Comfort Extra?
- Runtime150 min vs 180 min+20%
- Threshold climbing18 mm vs 22 mm+22%
- Height105 mm vs 96 mm+9%
- Water tank (robot)130 ml vs 200 ml+54%
- Dustbin (robot)250 ml vs 350 ml+40%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 13,000 Pa | 4,000 Pa |
| Dustbin (robot) | 250 ml | 350 ml |
| Main brush | Single main brush | Dual main brushes |
| Anti-tangle brush | Yes | — |
| Side brushes | 2 | 1 |
| Carpet detection | Yes | Yes |
| Dirt detection | 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) |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| Threshold climbing | 18 mm | 22 mm |
| No-go zones / virtual walls | — | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Roller mop | Vibrating / sonic mop |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | — | 5 mm |
| Water tank (robot) | 130 ml | 200 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 | — |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | Yes | — |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Clean water tank (dock) | 3.2 l | — |
| Dirty water tank (dock) | 2.5 l | — |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 5,200 mAh |
| Runtime | 150 min | 180 min |
| Charging time | 230 min | 360 min |
| Cleaning area per charge | — | 300 m² |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 360 mm | 350 mm |
| Length | 360 mm | 350 mm |
| Height | 105 mm | 96 mm |
| Weight | 5.6 kg | — |
| Shape | Round | Round |
| Colours | White, Black | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | — | Amazon Alexa, Google Assistant, Apple Siri |
| Live camera view / video call | Yes | — |
| Remote control | — | Yes |
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