Dreame D20 Air Plus vs Dreame L40s Ultra
Researched by Riley Hart · prices checked Nov 4, 2026
As of Nov 4, 2026, the Dreame D20 Air Plus costs $350 and the Dreame L40s Ultra costs $500, so the Dreame D20 Air Plus is $150 cheaper. The Dreame L40s Ultra has a published review score and ranks #6 in our robot vacuums ranking; the Dreame D20 Air Plus is not scored yet. Pick the Dreame D20 Air Plus for hard floor homes on a budget that want auto empty. Pick the Dreame L40s Ultra for pet owners with carpet on a budget. The Dreame D20 Air Plus wins 4 of 7 points we can measure (1 tied).
Who wins, point by point
The Dreame D20 Air Plus wins 4 of 7 points we can measure (1 tied). Built from today's prices, the specs and independent tests for these two robots.
| D20 Air Plus | L40s Ultra | Winner | |
|---|---|---|---|
| Price today | $350 | $500 | D20 Air Plus |
| Warranty | 3 years | 3 years | Tie |
| Suction | 20,000 Pa | 19,000 Pa | D20 Air Plus |
| Runtime per charge | 150 min | 220 min | L40s Ultra |
| Onboard bin | 220 mL | 310 mL | L40s Ultra |
| Robot height (fits under furniture) | 3.7 in (tested) | 3.82 in | D20 Air Plus |
| Release year | 2026 | 2025 | D20 Air Plus |
- You want to spend less (saves $150)
- You care most about suction (20,000 Pa vs 19,000 Pa)
- You care most about robot height (fits under furniture) (3.7 in (tested) vs 3.82 in)
- Best for hard floor homes on a budget that want auto empty
- You care most about runtime per charge (220 min vs 150 min)
- You care most about onboard bin (310 mL vs 220 mL)
- Best for pet owners with carpet on a budget
- Suction
- 20,000 Pa claimed
- Navigation
- LiDAR
- Mopping
- Yes
- Runtime
- Up to 150 min from
Budget LiDAR robot with 20,000 Pa and a 120 day auto empty bag
Full Dreame D20 Air Plus review, pros and cons →- Suction
- 19,000 Pa claimed
- Navigation
- LDS LiDAR
- Mopping
- Dual spinning mops
- Runtime
- Up to 220 min in quiet
Strong pet hair cleaner with a full dock at a deep discount
Full Dreame L40s Ultra review, pros and cons →Side by side
| Dreame D20 Air Plus | Dreame L40s Ultra | |
|---|---|---|
| Price | $350 | $500 |
| 3 year cost | $350 | $500 |
| Our score | Not scored yet | 8.8/10 |
| Rank in Floors | #53 | #6 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 3 years (Dreame US store) |
| Suction | 20,000 Pa claimed (Dreame), with Quiet, Standard, Intense and Max levels (PCWorld) | 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above average |
| Navigation | LiDAR with up to 4 saved maps, 3D map and no go zones (Dreame); Android Authority found it navigates well and rarely hit furniture | LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute |
| Obstacle avoidance | No camera; LiDAR, front bumper and cliff sensors only (Android Authority, PCWorld). Android Authority saw it shove a plastic tub and fold a small mat | 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7 of 24 objects |
| Mopping | Yes, flat pad with a 280 mL water tank (Dreame) and 32 water levels (Android Authority); no mop lift and no pad washing in the dock (PCWorld) | 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, 4 L dust bag, up to 120 days per Dreame in house lab calculation | Yes, 3.2 L dust bag, up to 100 days (Dreame) |
| Dock features | Auto empty and charging only; small dock at 293 x 201 x 266.5 mm (Dreame) with a power switch on the back (PCWorld) | 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 150 min from a 3,200 mAh battery, about 140 m2 in quiet mode (Dreame); Android Authority cleaned about 463 sq ft in about 57 min using 73% battery | Up to 220 min in quiet mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,935 sq ft per charge |
| Dustbin | 220 mL robot bin (Dreame) plus 4 L dock bag | 310 ml robot bin plus 3.2 L dock bag (Dreame) |
| Height | 94.7 mm, about 3.7 in (Dreame; Android Authority also measured 3.7 in) | 3.82 in (Dreame) |
| Pet hair | PCWorld said it picked up its greyhound's hair; no review measured pet hair pickup | HyperStream Detangling DuoBrush (Dreame); Vacuum Wars measured 91% pet hair pickup, 92% carpet sand removal and 0% hair wrap |
| App | Dreame app with carpet settings, floor direction, 3D maps, zones and no go areas; works with Alexa, Google Home and Siri (Dreame) | Dreamehome app with third party voice assistants only (Dreame); Vacuum Chef notes no built in voice assistant or live video |
| Noise | No dB figure from Dreame; Android Authority and PCWorld both found it louder than average for a robot, and louder on carpet (PCWorld) | Vacuum Chef measured 78 dB at max suction |
| Threshold | n/a | 1.57 in double layer and 0.87 in single steps (Dreame) |
| Best for | hard floor homes on a budget that want auto empty | pet owners with carpet on a budget |
| Skip if | you need real mopping or camera obstacle avoidance | your floor often has cables, socks or toys |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Dreame D20 Air Plus
- Android Authority: Tested at home over several runs: cleaned about 400 sq ft in 48 min on 80% battery, then about 463 sq ft in 57 min on 73%. Navigation was good, but it shoved angled leg items and folded a small mat. Mop works only as a damp touch up. Given the AA Recommended badge, no numeric score. Source
- PCWorld: Tested in a split level home on hard floors and rugs: good vacuuming for the price, picked up greyhound hair, cleaned under a low entertainment center and finished a downstairs area in about 33 min with 77% battery left. It repeatedly nudged a mat and the mop is basic. Source
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
- 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
Questions buyers ask
Which is better, the Dreame D20 Air Plus or the Dreame L40s Ultra?
The Dreame L40s Ultra has a published review score and ranks #6 in our robot vacuums ranking; the Dreame D20 Air Plus is not scored yet. Pick the Dreame D20 Air Plus for hard floor homes on a budget that want auto empty. Pick the Dreame L40s Ultra for pet owners with carpet on a budget.
Which is cheaper?
The Dreame D20 Air Plus at $350, versus $500 for the Dreame L40s Ultra, checked Nov 4, 2026. Over 3 years with running costs: $350 vs $500.
What is the difference between the D20 Air Plus and the L40s Ultra?
Suction: 20,000 Pa claimed (Dreame), with Quiet, Standard, Intense and Max levels (PCWorld) on the D20 Air Plus, 19,000 Pa claimed (Dreame); Vacuum Chef measured 490 FPM carpet airflow, well above… on the L40s Ultra. Navigation: LiDAR with up to 4 saved maps, 3D map and no go zones (Dreame); Android Authority found… on the D20 Air Plus, LDS LiDAR with Pathfinder, 4 maps (Dreame); Vacuum Wars measured 0.85 m2 per minute on the L40s Ultra. Obstacle avoidance: No camera; LiDAR, front bumper and cliff sensors only (Android Authority, PCWorld)… on the D20 Air Plus, 3D structured light only, no camera or object count (Dreame); Vacuum Wars saw it avoid 7… on the L40s Ultra.
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