Dreame L40s Ultra CE Review: Great Value Cleaner Undone by Side Brush Errors
13,000 Pa suction and a hair-cutting TriCut brush win over pet owners fast, but a repeated side brush error around the two to three month mark is the pattern in the negative reviews.
The CE is the affordable entry into Dreame's L40s line, and owners who avoid the known fault are enthusiastic: 13,000 Pa suction that pulls debris out of rugs, a TriCut brush that cuts long hair so it never wraps, corner coverage that reviewers specifically praise, and an easy app. Golden retriever owners describe hair almost disappearing from the house. The problem that shows up again and again is a side brush error appearing after roughly one to three months, which owners cannot clear even after replacing the brush, and which requires shipping the unit back to Dreame. Excellent value if you get a good unit; the warranty process is the weak link.
- Long-haired households and pet owners
- Budget-conscious buyers wanting a full auto dock
- Carpet and rug cleaning
- First-time robot vacuum buyers
Pros
- TriCut brush cuts long hair so it never wraps the roller
- 13,000 Pa suction pulls debris out of rugs effectively
- Corner and edge coverage praised by multiple owners
- Full auto dock with hot-water washing at a low price
- Quick setup and an easy-to-use app
Cons
- Side brush error reported repeatedly after one to three months
- Warranty requires shipping the unit back to Dreame
- Mopping too light for heavy kitchen messes
- High-traffic homes need frequent manual cleaning
- Lower suction than the standard L40s Ultra
Who is the Dreame L40s Ultra CE for?
The CE trims suction to 13,000 Pa and simplifies the station relative to its siblings, which is how it lands at a much lower price while keeping the parts most buyers care about: self-emptying, hot-water mop washing, warm-air drying, an extendable mop and LiDAR mapping. It suits people who want the full automated experience without flagship pricing, and pet owners are strongly represented among the happiest reviewers.
What buyers love
The TriCut brush is the standout. Owners with two golden retrievers say the hair problem almost disappeared because the brush cuts long hair rather than letting it wrap. Suction earns specific praise for pulling debris out of rugs, and several reviewers highlight corner coverage, saying it reaches places they expected it to miss. The app is called quick to set up and easy to use, and multiple owners who have been through several robot vacuums over the years rate this as the best they have owned.
Where it falls short
A side brush error dominates the negative reviews, appearing after about one to three months. Owners report replacing the brush and running every troubleshooting step without clearing it, then being asked to send photos and data before shipping the unit back to Dreame, which reviewers describe as a hassle. One buyer with a busy household found the mopping too weak for kitchen messes, keeping the house manageable rather than genuinely clean. Another notes the machine needed cleaning every other day in a high-traffic home.
Living with it day to day
Set-up is quick and mapping is reliable. The dock empties into a dust bag, washes the pads with hot water and dries them, so day-to-day work is light. Mopping is best treated as maintenance for light dust and footprints rather than a substitute for scrubbing a messy kitchen floor. Consumables are dust bags, pads and brushes. Alexa and Google Home voice control are supported.
