# Dreame L40s Ultra vs Dreame L40s Ultra AE

As of Oct 31, 2026, the Dreame L40s Ultra costs $570 and the Dreame L40s Ultra AE costs $670, so the Dreame L40s Ultra is $100 cheaper. The Dreame L40s Ultra scores higher in our ranking (8.6 vs 7.2 out of 10). Pick the Dreame L40s Ultra for pet owners with carpet on a budget. Pick the Dreame L40s Ultra AE for large mixed floor homes on a mid budget.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/dreame-l40s-ultra-vs-dreame-l40s-ultra-ae/

## Side by side

| | Dreame L40s Ultra | Dreame L40s Ultra AE |
|---|---|---|
| Price | $570 | $670 |
| 3 year cost | $570 | $670 |
| Our score | 8.6/10 | 7.2/10 |
| Rank in Floors | #9 | #16 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 3 years (Dreame US store) |
| Suction | 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above average | 19,000 Pa claimed (Dreame) |
| Navigation | LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute | LDS LiDAR (Dreame); Vacuum Wars measured 0.87 m2 per minute against a 0.70 average |
| Obstacle avoidance | 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7 of 24 objects | RGB AI camera plus 3D structured light, 120+ obstacle types (Dreame); Vacuum Wars saw it avoid 19 of 24 objects |
| Mopping | Dual spinning mops, 10.5 mm lift, extend and auto removal (Dreame); Vacuum Wars measured 0.95 g water left and a 259 combined mop score | Dual spinning mops, 10.5 mm lift, MopExtend (Dreame); Vacuum Wars measured only 0.35 g of water left behind and a 269 combined mop score against a 188 average |
| Self empty | Yes, 3.2 L dust bag, up to 100 days (Dreame) | Yes, 3.2 L dust bag, up to 100 days (Dreame) |
| Dock features | Auto empty, 167 F (75 C) hot water mop wash, hot air drying, self cleaning washboard, auto detergent and water refill, 4.5 L clean and 4.0 L dirty tanks; water hookup kit sold separately (Dreame) | Auto empty, 167 F (75 C) hot water mop wash, hot air drying, self cleaning washboard, auto detergent and water refill, 4.5 L clean and 4.0 L dirty tanks; water hookup kit sold separately (Dreame) |
| Runtime | Up to 220 min in quiet mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,935 sq ft per charge | Up to 180 min and 1,808 sq ft (Dreame); Vacuum Wars estimated about 2,462 sq ft per charge |
| Dustbin | 310 ml robot bin plus 3.2 L dock bag (Dreame) | 395 ml on the product page, but Dreame's comparison table lists 300 ml or more |
| Height | 3.82 in (Dreame) | 97 mm (Dreame dimensions) |
| Pet hair | HyperStream Detangling DuoBrush (Dreame); Vacuum Wars measured 91% pet hair pickup, 92% carpet sand removal and 0% hair wrap | Liftable rubber brush plus TriCut Brush 3.0 (Dreame); Vacuum Wars measured 81% pet hair pickup and 0% hair wrap with the TriCut brush |
| App | Dreamehome app with third party voice assistants only (Dreame); Vacuum Chef notes no built in voice assistant or live video | Dreamehome app with Alexa, Google Home, Siri and Apple Watch (Dreame); Matter support (Just A Dad Approved) |
| Threshold | 1.57 in double layer and 0.87 in single steps (Dreame) | 20 mm (Dreame) |
| Noise | Vacuum Chef measured 78 dB at max suction | n/a |
| Best for | pet owners with carpet on a budget | large mixed floor homes on a mid budget |
| Skip if | your floor often has cables, socks or toys | corner cleaning and heavy pet hair matter most |

## What reviewers found

### Dreame L40s Ultra

- Vacuum Wars (3.51 Vacuum Wars stars): 92% carpet sand removal, 91% pet hair pickup and 0% hair wrap with the DuoBrush, about 1,935 sq ft per charge, but only 7 of 24 obstacles avoided. [Source](https://vacuumwars.com/dreame-l40s-series-review/)
- Vacuum Chef (95/100): Scored 95/100 in its real world cleaning tests, measured 490 FPM carpet airflow and 78 dB at max suction. Obstacle avoidance varied by floor and object. [Source](https://vacuumchef.com/dreame-l40s-ultra-review-powerful-suction-smart-mopping-real-world-performance-tested/?amp=1)

### Dreame L40s Ultra AE

- Vacuum Wars (3.52 Vacuum Wars stars): 85% carpet sand removal, 81% pet hair pickup, 0% hair wrap, 19 of 24 obstacles avoided and about 2,462 sq ft per charge against a 1,015 average. Named Best Value of the Year. [Source](https://vacuumwars.com/dreame-l40s-series-review/)
- Just A Dad Approved (7.9/10): After 90+ days of home testing, liked the AI camera, included TriCut brush and low upkeep, but said corners get less attention without an extending side brush and recommended buying only on deep sale. Its bottom line text names a different model, so treat the score with care. [Source](https://justadadapproved.com/product/dreame-l40s-ultra-ae-robot/)

## Questions buyers ask

### Which is better, the Dreame L40s Ultra or the Dreame L40s Ultra AE?

The Dreame L40s Ultra scores higher in our ranking (8.6 vs 7.2 out of 10). Pick the Dreame L40s Ultra for pet owners with carpet on a budget. Pick the Dreame L40s Ultra AE for large mixed floor homes on a mid budget.

### Which is cheaper?

The Dreame L40s Ultra at $570, versus $670 for the Dreame L40s Ultra AE, checked Oct 31, 2026. Over 3 years with running costs: $570 vs $670.

### What is the difference between the L40s Ultra and the L40s Ultra AE?

Suction: 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above… on the L40s Ultra, 19,000 Pa claimed (Dreame) on the L40s Ultra AE. Navigation: LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute on the L40s Ultra, LDS LiDAR (Dreame); Vacuum Wars measured 0.87 m2 per minute against a 0.70 average on the L40s Ultra AE. Obstacle avoidance: 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7… on the L40s Ultra, RGB AI camera plus 3D structured light, 120+ obstacle types (Dreame); Vacuum Wars saw it… on the L40s Ultra AE.

Full reviews: [Dreame L40s Ultra](https://robotsforthat.com/robot/dreame-l40s-ultra/index.md), [Dreame L40s Ultra AE](https://robotsforthat.com/robot/dreame-l40s-ultra-ae/index.md)