Dreame L40s Ultra vs Dreame D30 Ultra
Quick take: The Dreame D30 Ultra costs $120 less; the Dreame D30 Ultra has stronger suction (25,000 vs 19,000 Pa); the Dreame D30 Ultra runs longer per charge (230 vs 220 min).
Which one to buy
Pay $120 more and get the better robot. The L40s Ultra, at $570, costs more than the D30 Ultra at $450, and it's the one with hot-water mop washing and the pet-hair reputation. The D30 Ultra's selling points are a bigger suction rating, 25,000 Pa against 19,000 Pa, and a 3-year warranty against 1 year.
The suction number doesn't carry over to results. In independent testing the D30 Ultra picked up only 61% of flattened pet hair on carpet against an 82% average, scored 60 on dried-stain removal against a 108 average, and avoided 6 of 12 test objects. Its dock rinses pads with room-temperature water. L40s Ultra owners rank it first for heavy shedding thanks to two counter-rotating rollers that swallow even 30cm hair without tangling, and they say its roughly 75°C pad wash brings mops back clean. It's also the only one with an extending side brush for corners.
The L40s Ultra isn't flawless. Owners repeatedly call it poor on carpet despite the suction figure, the mop tray doesn't fully come out for cleaning, it sometimes fails to pick its pads back up at the dock, and raised thresholds stop it. Owners of the standard model also mention it trying to eat cords. The D30 Ultra's strengths are fast LiDAR coverage, a well-liked app and above-average battery efficiency in testing.
For a hard-floor home with pets, the L40s Ultra is worth the extra $120. Neither is a carpet robot. The D30 Ultra makes sense only if you have no pets, keep floors clear, and value the longer warranty and the $120 saving above cleaning results.
Dreame L40s Ultra
Best for mostly hard floors and shedding pets; it hot-washes its mops and leads on pet hair by owner accounts, which justifies the extra $120.
Dreame D30 Ultra
Buy the D30 Ultra only for a pet-free home with clear floors where a 3-year warranty and full dock automation matter more than mopping or pet-hair results.
| Spec | Dreame L40s Ultra | Dreame D30 Ultra |
|---|---|---|
| Price | ~$570 | ~$450 |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 19000 Pa | 25,000 Pa |
| Battery | 220 min | 230 min |
| Navigation | LiDAR + Camera | LiDAR |
| Filtration | — | — |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | 66 dB | — |
| Dustbin | 310 ml | 300 ml |
| Water tank | 300 ml | 4.5 L |
| Self-empty dock | Yes | Yes |
| Auto mop washing | Yes | Yes |
| Hot water washing | Yes | No |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | Yes | Yes |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.78 x 13.78 x 3.82 in | 13.78 x 13.78 x 3.81 in |
| Weight | 9.04 lbs | 8.6 lbs |
| Warranty | 3 years | 3 years |
Pros & cons
Dreame L40s Ultra
- ✓Flagship-grade 19000Pa suction and hot water mop washing at a mid-range price
- ✓81% positive owner sentiment — praised for obstacle avoidance and pet hair
- ✓DuoBrush design shrugs off long hair that kills single-roller robots
- ✓MopExtend reaches baseboards and into corners most round robots miss
- ✓260-minute battery covers large homes in a single run
- ✗Carpet performance is good but not class-leading — fine dust stays in thick pile
- ✗Dock takes up serious floor space and the water tanks need weekly attention
- ✗Dreame app notifications are chatty out of the box
- ✗Frequent sale-price swings make it easy to overpay — wait for the $600s
Dreame D30 Ultra
- ✓25,000Pa suction beats several pricier Dreame L-series robots
- ✓230-minute runtime covers large homes in a single charge
- ✓MopExtend arm and TriCut detangling brush handle corners and pet hair well
- ✓Self-empty dock rated for roughly 100 days between bag changes
- ✓LiDAR navigation with multi-floor mapping and app no-go zones
- ✗Mop pads are rinsed with room-temperature water, not heat-washed, so greasy spots need more passes
- ✗No hot-air pad drying claim published, so pads may stay damp longer between cycles
- ✗Noise level isn't published by Dreame
- ✗300ml onboard dust box is small without the auto-empty dock
- ✗D30 Ultra CE sibling looks similar in listings but drops the self-cleaning washboard — easy to buy the wrong one
Dreame L40s Ultra vs Dreame D30 Ultra: common questions
Is the Dreame D30 Ultra's higher suction rating worth choosing over the L40s Ultra?▾
Not by test results. Its 25,000 Pa rating and 3-year warranty look strong, and it costs $120 less, but testing found weak pet-hair pickup, dried-stain removal and obstacle avoidance. L40s Ultra owners, by contrast, rank it first for heavy shedding at its price.
Which one is better on carpet?▾
Neither is strong. L40s Ultra owners repeatedly call it poor on carpet, and the D30 Ultra scored 61% on flattened pet hair in carpet testing. If more than a third of your floors are carpet, look elsewhere.
Does the D30 Ultra wash its mops with hot water?▾
No. Its dock rinses pads with room-temperature water, so greasy kitchen spots leave more residue on the pads. The L40s Ultra hot-washes its pads, and owners say they come back clean instead of smelling.