- Suction
- 19,000 Pa claimed
- Navigation
- LDS LiDAR
- Mopping
- Dual spinning mops
- Runtime
- Up to 180 min and 1,808
Two quick taps and get the right robot for them, with today's price.
Dreame L40s Ultra AE
Balanced mid price bot with AI avoidance and very long coverage
Researched by Riley Hart · updated Oct 30, 2026
Is the Dreame L40s Ultra AE worth it? Vacuum Wars named it Best Value of the Year for its balanced results: good obstacle avoidance, careful mopping and about 2,462 sq ft per charge. It costs $670 as of Oct 31, 2026, and Just A Dad Approved scored it 7.9/10.
Vacuum Wars named it Best Value of the Year for its balanced results: good obstacle avoidance, careful mopping and about 2,462 sq ft per charge. It is a smart buy for mixed floor homes on a mid budget. Pet owners with lots of carpet may prefer the L40s Ultra, which picked up more hair.
Best for: large mixed floor homes on a mid budget. Skip if: corner cleaning and heavy pet hair matter most.
Specs
- Suction
- 19,000 Pa claimed (Dreame)
- Navigation
- LDS LiDAR (Dreame); Vacuum Wars measured 0.87 m2 per minute against a 0.70 average
- Obstacle avoidance
- 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, 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)
- 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)
- Runtime
- Up to 180 min and 1,808 sq ft (Dreame); Vacuum Wars estimated about 2,462 sq ft per charge
- Dustbin
- 395 ml on the product page, but Dreame's comparison table lists 300 ml or more
3 year cost of ownership
- Robot
- $670
- Total
- $670
Just A Dad Approved lists replacing dust bags and mop pads about every 2 months, HEPA filters every 150 hours and the main brush every 300 hours, but part prices are not on the product page.
Status and safety
- US availability
- ● On sale
- Recalls
- ● No Dreame robot recall in the CPSC database as of Oct 31, 2026. Checked daily.
- FCC authorized
- Not checked
- Company
- ● Active
- Warranty
- ● 3 years (Dreame US store)
Parts and refills for the L40s Ultra AE
- Dreame 1 L multi surface cleaning solution
$26.99 on the product page on 2026-10-30; no use rate given (source: Dreame US store) - Shop on Amazon →
Check the part number matches your model before you order. Affiliate links.
Price history
Tracked dailyTracking started Oct 31, 2026 at $670.
Each day adds a point. Turn on a price alert to hear about drops.
Where to buy
- Amazon
- See price →
- Dreame US store
- $670 →
Affiliate links. We may earn a commission. It never changes our score. Disclosure
Pros
- Avoided 19 of 24 obstacles
- Very long coverage per charge
- Low water use when mopping
- No hair wrap with TriCut brush
- Hot water mop washing
Cons
- Pet hair pickup only average
- No extending side brush for corners
- Low 20 mm threshold limit
- Older design than 2026 models
- Dustbin size differs between Dreame pages
What independent reviewers found
- 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.
- Vacuum Wars · 3.52 Vacuum Wars stars
- 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.
- Just A Dad Approved · 7.9/10
Spec history
Checked dailyNo spec changes since we started tracking on Oct 31, 2026.
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Questions buyers ask
Is the AE or the regular L40s Ultra better?
Vacuum Wars found the AE better at obstacles, mopping and coverage, and the L40s Ultra better on carpet and pet hair.
Does it wash mops with hot water?
Yes. Dreame says the dock washes pads at 167 F (75 C) and dries them with hot air.
Can it connect to my water line?
Dreame sells a water hookup kit separately and says it is not available in all regions.
Guides and rankings with the Dreame L40s Ultra AE
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