Our Verdict
DREAME L40s Ultra AE Wins

Its 19,000Pa suction power is superior for deep cleaning. Choose the DREAME L40s Ultra CE for more reliable LiDAR navigation and auto water refills for mopping.
Bottom Line: DREAME L40s Ultra AE is the better choice. Its 19,000Pa suction power is superior for deep cleaning.
Key Differences
The most significant spec differences at a glance
Suction Power
46% moreAdvantages
Where each product wins
DREAME
- Suction Power: 46% higher (19000 vs 13000.0)
Who Should Buy Which?
Find the right product for your needs
Buy DREAME if...
DREAME L40s Ultra AE
If you prioritize the absolute deepest clean and don't mind a premium budget, the DREAME L40s Ultra AE is ideal. Its immense 19,000Pa suction effortlessly handles heavy debris, while the 167F hot water mop cleaning ensures superior hygiene and sterilization. This is for users who want cutting-edge mop sanitization and powerful vacuuming, especially if tackling challenging messes is a daily occurrence. Expect top-tier performance for a pristine home, even if it means manual water refills for the dock.
Buy DREAME if...
DREAME L40s Ultra CE
The DREAME L40s Ultra CE is perfect for users seeking excellent value without sacrificing core smart features. With reliable LiDAR navigation and a strong 13,000Pa suction, it expertly cleans both hard floors and carpets. Its advanced base automatically refills water and hot-air dries mops, offering enhanced convenience. This is an ideal choice for pet owners or busy individuals who want effective, consistent cleaning and intelligent room mapping at a more accessible price point, valuing efficiency and smart capabilities.
Spec Comparison
10 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $1000 | $399 |
| Rating | 4.2(225) | 4.3(613) |
| Suction Power Pa | 19000 | 13000 |
| Navigation Type | camera | LiDAR |
| Self Emptying Base | Yes | Yes |
| Model Number | RLL77SE | — |
| Carpet Detection | Yes | Yes |
| Mopping Function | Yes | Yes |
| Obstacle Avoidance | Yes | Yes |
| Weight | — | 17 lbs |
| App Control | — | Yes |
| Battery Life Mins | — | 160 |
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Pros & Cons
Quick overview of strengths and weaknesses
DREAME L40s Ultra
- 19,000Pa suction removes diverse floor debris.
- TriCut brush actively prevents hair tangling.
- MopExtend reaches edges and under furniture.
- Auto-empties dust bin for 100 days.
- Camera navigation struggles in low light conditions.
- Requires proprietary dust bags for auto-empty.
- Dock requires manual water tank refills.
DREAME L40s Ultra
- 13,000Pa suction removes deep dirt from hard floors and carp
- Base refills water, washes mops, hot air dries pads.
- TriCut Brush cuts hair, prevents brush tangles.
- Mop lifts 10.5mm on carpet, prevents wetting rugs.
- Auto-filling cleaning solution requires separate module.
- Requires 2.4GHz Wi-Fi network, no 5GHz support.
Frequently Asked Questions
Common questions about this comparison
What is the main difference in suction power between the two models?
The DREAME L40s Ultra AE boasts a superior 19,000Pa suction, ideal for deep cleaning various debris. The DREAME L40s Ultra CE offers 13,000Pa suction, which is still effective for everyday dirt on hard floors and carpets.
How do their navigation systems compare?
The L40s Ultra AE uses camera navigation, which can face challenges in low-light environments. In contrast, the L40s Ultra CE employs LiDAR navigation, providing generally more robust and accurate mapping and obstacle avoidance.
Which robot offers more advanced mopping features and convenience?
The DREAME L40s Ultra CE base automatically refills water for mopping, washes pads, and hot-air dries them. The L40s Ultra AE provides 1670F hot water mop cleaning but requires manual water tank refills.
Which model performs better in low-light conditions?
The DREAME L40s Ultra CE, with its LiDAR navigation, will perform better in low-light conditions. The DREAME L40s Ultra AE's camera navigation is noted to struggle in such environments, impacting its efficiency.
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