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DreameL40s Ultra CE
Suction
13,000 Pa on the Dreame
Navigation
LDS LiDAR
Mopping
Dual spinning mops
Runtime
Up to 260 min in quiet
ON SALEPrice tracked daily
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Dreame

Dreame L40s Ultra CE

Lowest cost L40s with auto empty and mop washing

Researched by Riley Hart · updated Oct 30, 2026

2testersREAD THE TESTS
Short answer

Is the Dreame L40s Ultra CE worth it? A cheap way into a self emptying, mop washing dock with long runtime. It costs $470 as of Oct 31, 2026, and 2 independent reviewers tested it.

$470Suction: 13,000 Pa on the DreameRuntime: Up to 260 min in quiet2 independent tests
Smart buy checkChecked Oct 31, 2026
$470$75037% off list
New to our trackerWe have no past sale price yet. Lowest we have seen: $470. Get a price alert.
Where to buyAmazon: see today's price. Dreame US store $470.
Right for your home?Best for first time buyers who want a full dock cheaply. Skip it if you have pets, clutter or want hot water mop washing.
Check price at Amazon →Or buy at Dreame US store, $470
$470CHECKED OCT 31, 2026
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Quick verdict · checked Oct 30, 2026

A cheap way into a self emptying, mop washing dock with long runtime. Vacuum Wars found good carpet cleaning and no hair tangles, but weak pet hair pickup, poor obstacle avoidance and wet mopping. Spend more on the L40s Ultra or AE if you have pets or clutter.

Best for: first time buyers who want a full dock cheaply. Skip if: you have pets, clutter or want hot water mop washing.

Specs

Suction
13,000 Pa on the Dreame product page and comparison blog
Navigation
LDS LiDAR with Smart Pathfinder (Dreame); Vacuum Wars measured 0.73 m2 per minute
Obstacle avoidance
Single laser 3DAdapt structured light, no camera (Dreame); Vacuum Wars saw it avoid 8 of 24 objects
Mopping
Dual spinning mops with RoboSwing, 10.5 mm lift, no extension or auto removal (Dreame); Vacuum Wars measured 2.20 g water left, the most of the L40s range
Self empty
Yes, 3.2 L dust bag, up to 100 days (Dreame)
Dock features
Auto empty, cool water mop wash, warm air drying, auto water refill, 4.5 L clean and 4 L used tanks; auto detergent dosing is a $39.99 add on (Dreame)
Runtime
Up to 260 min in quiet vacuum mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,922 sq ft per charge
Dustbin
300 ml or more plus 3.2 L dock bag (Dreame)

3 year cost of ownership

Robot
$470
Total
$510

Bag and pad prices are not listed 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 CE

Dreame auto solution dosing accessory
one time add on, $39.99 on the product page on 2026-10-30, needed for auto detergent (source: Dreame US store)
Shop on Amazon →

Check the part number matches your model before you order. Affiliate links.

Price history

Tracked daily

Tracking started Oct 31, 2026 at $470.

Each day adds a point. Turn on a price alert to hear about drops.

Where to buy

Dreame US store
$470 →

Affiliate links. We may earn a commission. It never changes our score. Disclosure

Pros

  • Low price for a full dock
  • 89% carpet sand removal
  • No hair wrap with TriCut brush
  • Long claimed runtime
  • LiDAR mapping

Cons

  • Avoided only 8 of 24 obstacles
  • 68% pet hair pickup
  • Leaves the most water of the L40s range
  • Cool water mop wash only
  • Detergent dosing costs extra

What independent reviewers found

89% carpet sand removal, 68% pet hair pickup, 0% hair wrap, 8 of 24 obstacles avoided, about 1,922 sq ft per charge and 2.20 g of water left behind, the most of the three L40s models. Not in its Top 20.
Vacuum Wars · 3.10 Vacuum Wars stars
Ranked it with the Mova P50 Ultra at the top for vacuuming among robots from the last three years and tied for first in mopping with the Narwal Flow. Noted the detergent dispenser is sold separately; listed $469.99 MSRP.
The Smart Home Hookup

Spec history

Checked daily

No spec changes since we started tracking on Oct 31, 2026.

Versions
L40s Ultra2025Adds 19,000 Pa claimed suction, DuoBrush, hot water mop wash and extending mop (Dreame)
Price drop alert

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Owners say

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We email owners 3 quick questions now and every 6 months, then show the results here.

Questions buyers ask

Does the dock wash mops with hot water?

No. Vacuum Wars says the CE uses cold water to wash pads, then dries them with warm air.

Will it add detergent automatically?

Only with the $39.99 auto solution dosing accessory, sold separately.

How long does it run?

Dreame claims up to 260 min in quiet vacuum mode. Vacuum Wars estimated about 1,922 sq ft per charge.

Guides and rankings with the Dreame L40s Ultra CE

Compare the Dreame L40s Ultra CE

Alternatives in Floors

See all ranked →
Floors · Dreame D20 Plus $3109.5/10 Floors · TP-Link Tapo RV30 Max Plus $2509.2/10 Floors · Ecovacs Deebot N30 Pro Omni $3159.1/10 Floors · Ecovacs Deebot T50 Pro Omni $4009.1/10
SOURCES [1] [2] [3] [4] [5] · COMPLETENESS 80/100 Is this your robot? Claim it →
$470Dreame L40s Ultra CE
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