# Dreame D20 Plus vs Dreame L40s Ultra

As of Oct 31, 2026, the Dreame D20 Plus costs $310 and the Dreame L40s Ultra costs $570, so the Dreame D20 Plus is $260 cheaper. The Dreame D20 Plus scores higher in our ranking (9.5 vs 8.6 out of 10). Pick the Dreame D20 Plus for pet owners with carpet on a budget. Pick the Dreame L40s Ultra for pet owners with carpet on a budget.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/dreame-d20-plus-vs-dreame-l40s-ultra/

## Side by side

| | Dreame D20 Plus | Dreame L40s Ultra |
|---|---|---|
| Price | $310 | $570 |
| 3 year cost | $358 | $570 |
| Our score | 9.5/10 | 8.6/10 |
| Rank in Floors | #1 | #9 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 3 years (Dreame US store) |
| Suction | 13,000 Pa with five levels (Dreame); Vacuum Wars measured 0.53 kPa sealed suction against a 0.99 kPa average but 18 CFM airflow, above average | 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above average |
| Navigation | LDS LiDAR with multi floor maps, room selection and virtual barriers (Vacuum Wars) | LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute |
| Obstacle avoidance | No small object avoidance; Vacuum Wars recorded 0 of 24 obstacles avoided | 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7 of 24 objects |
| Mopping | Yes, detachable flat pad with a 350 ml tank and 32 water levels; no mop lift (Dreame, Vacuum Wars) | 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 |
| Self empty | Yes, 5 L bag, up to 150 days per bag (Dreame) | Yes, 3.2 L dust bag, up to 100 days (Dreame) |
| Dock features | Auto empty and charging only; no mop washing, drying or water refill (Vacuum Wars) | 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 | Dreame lists 285 min in its lab test; Vacuum Wars got 48 min in a vacuum and mop run but estimated about 2,761 sq ft of coverage per charge | Up to 220 min in quiet mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,935 sq ft per charge |
| Dustbin | 500 ml robot bin plus 5 L dock bag (Dreame) | 310 ml robot bin plus 3.2 L dock bag (Dreame) |
| Height | 3.8 in (robot 13.8 x 13.8 x 3.8 in, Dreame) | 3.82 in (Dreame) |
| Pet hair | Vacuum Wars measured 91% flattened pet hair pickup against an 82.2% average and 0% long hair wrap | HyperStream Detangling DuoBrush (Dreame); Vacuum Wars measured 91% pet hair pickup, 92% carpet sand removal and 0% hair wrap |
| App | Dreamehome app with room settings, no mop zones, auto empty frequency and carpet boost; works with Alexa, Siri and Google Home (Dreame, Vacuum Wars) | Dreamehome app with third party voice assistants only (Dreame); Vacuum Chef notes no built in voice assistant or live video |
| Threshold | Not published; Dreame's spec table lists 0.79 in under obstacle avoidance without explaining it | 1.57 in double layer and 0.87 in single steps (Dreame) |
| Noise | Vacuum Chef measured about 74 dB at max suction | Vacuum Chef measured 78 dB at max suction |
| Best for | pet owners with carpet on a budget | pet owners with carpet on a budget |
| Skip if | your floors are cluttered with cables and small objects | your floor often has cables, socks or toys |

## What reviewers found

### Dreame D20 Plus

- Vacuum Wars (2.90 Vacuum Wars stars): Removed 93% of embedded sand and 91% of flattened pet hair with 0% long hair wrap, and estimated about 2,761 sq ft per charge. It avoided 0 of 24 obstacles, crevice pickup was below average and mopping scored below average on dried stains. [Source](https://vacuumwars.com/dreame-d20-plus-review/)
- Vacuum Chef (95/100): Hands on review of a unit supplied by Dreame: strong cleaning on carpet, rugs and hard floors and good tangle resistance, but small or low objects were bumped and it reached about 74 dB at max suction. [Source](https://vacuumchef.com/dreame-d20-plus-robot-vacuum-and-mop-review-powerful-13000pa-suction-meets-smart-mid-range-value/)

### 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)

## Questions buyers ask

### Which is better, the Dreame D20 Plus or the Dreame L40s Ultra?

The Dreame D20 Plus scores higher in our ranking (9.5 vs 8.6 out of 10). Pick the Dreame D20 Plus for pet owners with carpet on a budget. Pick the Dreame L40s Ultra for pet owners with carpet on a budget.

### Which is cheaper?

The Dreame D20 Plus at $310, versus $570 for the Dreame L40s Ultra, checked Oct 31, 2026. Over 3 years with running costs: $358 vs $570.

### What is the difference between the D20 Plus and the L40s Ultra?

Suction: 13,000 Pa with five levels (Dreame); Vacuum Wars measured 0.53 kPa sealed suction… on the D20 Plus, 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above… on the L40s Ultra. Navigation: LDS LiDAR with multi floor maps, room selection and virtual barriers (Vacuum Wars) on the D20 Plus, LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute on the L40s Ultra. Obstacle avoidance: No small object avoidance; Vacuum Wars recorded 0 of 24 obstacles avoided on the D20 Plus, 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7… on the L40s Ultra.

Full reviews: [Dreame D20 Plus](https://robotsforthat.com/robot/dreame-d20-plus/index.md), [Dreame L40s Ultra](https://robotsforthat.com/robot/dreame-l40s-ultra/index.md)