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- L40 Ultra AE vs S1 HydroJet
Dreame L40 Ultra AE vs eufy S1 HydroJet
What L40 Ultra AE does better (5) and where S1 HydroJet wins (5) — every spec side by side.
vs
7.5Cleaning power5.7
7.8Navigation7.8
7.5Mopping9.6
8.8Base station7.1
6.8Battery8.0
Dimensions
Size comparison
L40 Ultra AES1 HydroJet
| L40 Ultra AE | S1 HydroJet | Difference | |
|---|---|---|---|
| Height | 97 mm | 96 mm | +1 mm |
| Width / diameter | 350 mm | 347 mm | +3 mm |
| Length | 350 mm | 347 mm | +3 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is L40 Ultra AE better than S1 HydroJet?
- Suction power19,000 Pa vs 8,000 Pa2.4×
- Dustbin (robot)395 ml vs 250 ml+58%
- Clean water tank (dock)4.5 l vs 3 l+50%
- Dust bag (dock)3.2 l vs 2.5 l+28%
- Charging time210 min vs 240 min+14%
Why is S1 HydroJet better than L40 Ultra AE?
- Mop typeRotating mop pads vs Roller mop
- Runtime180 min vs 216 min+20%
- Mop lift height10.5 mm vs 12 mm+14%
- Noise level74 dB vs 60 dB+23%
- Cleaning area per charge168 m² vs 183 m²+9%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 19,000 Pa | 8,000 Pa |
| Dustbin (robot) | 395 ml | 250 ml |
| Main brush | Single main brush | Single main brush |
| Side brushes | 1 | 2 |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | — |
| Noise level | 74 dB | 60 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor | LiDAR laser (LDS), dToF laser, Cliff sensors |
| Obstacle avoidance | AI camera | AI camera |
| Threshold climbing | 20 mm | 20 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Roller mop |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | 10.5 mm | 12 mm |
| Extending mop (edges) | Yes | — |
| Water tank (robot) | — | 240 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) | 3.2 l | 2.5 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | Yes | — |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Plumbed water connection | Yes | — |
| Clean water tank (dock) | 4.5 l | 3 l |
| Dirty water tank (dock) | 4 l | 2 l |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 5,200 mAh |
| Runtime | 180 min | 216 min |
| Charging time | 210 min | 240 min |
| Cleaning area per charge | 168 m² | 183 m² |
| Recharge & resume | Yes | — |
| Size & weight | ||
| Width / diameter | 350 mm | 347 mm |
| Length | 350 mm | 347 mm |
| Height | 97 mm | 96 mm |
| Weight | 4 kg | — |
| Shape | Round | Round |
| Colours | Black | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant |
| Live camera view / video call | Yes | — |
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