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- RVF 7 Comfort Extra vs S8 MaxV Ultra
Kärcher RVF 7 Comfort Extra vs Roborock S8 MaxV Ultra
What RVF 7 Comfort Extra does better (5) and where S8 MaxV Ultra wins (4) — every spec side by side.
vs
6.1Cleaning power5.5
7.3Navigation7.6
9.7Mopping7.7
7.1Base station5.4
6.1Battery7.4
Dimensions
Size comparison
RVF 7 Comfort ExtraS8 MaxV Ultra
| RVF 7 Comfort Extra | S8 MaxV Ultra | Difference | |
|---|---|---|---|
| Height | 105 mm | 103 mm | +2 mm |
| Width / diameter | 360 mm | 353 mm | +7 mm |
| Length | 360 mm | 353 mm | +7 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is RVF 7 Comfort Extra better than S8 MaxV Ultra?
- Mop typeRoller mop vs Vibrating / sonic mop
- Suction power13,000 Pa vs 10,000 Pa+30%
- Dust bag (dock)4 l vs 2.5 l+60%
- Water tank (robot)130 ml vs 100 ml+30%
- Charging time230 min vs 240 min+4%
Why is S8 MaxV Ultra better than RVF 7 Comfort Extra?
- Runtime150 min vs 180 min+20%
- Threshold climbing18 mm vs 20 mm+11%
- Clean water tank (dock)3.2 l vs 4 l+23%
- Dustbin (robot)250 ml vs 270 ml+8%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 13,000 Pa | 10,000 Pa |
| Dustbin (robot) | 250 ml | 270 ml |
| Main brush | Single main brush | Dual main brushes |
| Anti-tangle brush | Yes | — |
| Side brushes | 2 | 1 |
| 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), Wall sensor, Cliff sensors |
| Obstacle avoidance | AI camera | AI camera |
| Threshold climbing | 18 mm | 20 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 | — | 20 mm |
| Extending mop (edges) | — | Yes |
| Water tank (robot) | 130 ml | 100 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 | 2.5 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) | 3.2 l | 4 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 | 240 min |
| Cleaning area per charge | — | 300 m² |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 360 mm | 353 mm |
| Length | 360 mm | 353 mm |
| Height | 105 mm | 103 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 | Yes |
| Remote control | — | Yes |
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