Live nowPrime Day 2026October 6 to 7, 2026Starts in08d05h23m36sSee the deals
Robot Vacuums · Head to head

Dreame L40 Ultra Gen 2 vs iRobot Roomba Plus 505

Full Robot Vacuums comparison in 2026

Updated September 2026
Data from Amazon and official Dreame and iRobot sites.
2026 verdict
Compare 25000Pa versus 7000Pa of suction, 3 years of warranty versus 1 year and the Dreame L40 Ultra Gen 2 is already the robot vacuum that wins on 25000Pa of suction.
Dreame L40 Ultra Gen 2
Winner
Dreame L40 Ultra Gen 2
$499.99$749.9933% OFF
Buy on Amazon USACheck price
The rest of its lead is 25000Pa of suction, 231 minutes of battery life, and a 3-year warranty. Both machines mop, so the gap is elsewhere on the spec sheet. iRobot Roomba Plus 505 keeps a broader connectivity mix, so it remains the pick when that priority beats 25000Pa of suction. Most households that want a capable robot vacuum should take the Dreame L40 Ultra Gen 2, and leave the iRobot Roomba Plus 505 for the narrower case above.
vs
Price alerts

Robot Vacuum prices change while you decide

We check the price of every Robot Vacuum in the catalog daily and email you the drops, whichever one you pick.

Smart home deals and news, straight to your inbox

Price drops, new releases and the smart home news worth knowing.

No spam. Unsubscribe in one click.

Your subscription could not be saved. Please try again.
Please enter a valid email address.
Your subscription has been successful.
FeatureDreame L40 Ultra Gen 2iRobot Roomba Plus 505Winner
Price$499.99$695.00Dreame L40 Ultra Gen 2
Rating4.44.2Dreame L40 Ultra Gen 2
Warranty3 years1 yearDreame L40 Ultra Gen 2
Battery Life231 minutes180 minutesDreame L40 Ultra Gen 2
Connectivity2.4 GHz WiFi2.4 GHz WiFi, 5 GHz WiFiiRobot Roomba Plus 505
Suction Power25000Pa7000PaDreame L40 Ultra Gen 2
Auto RechargeYESYESTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie
Cliff DetectionYESYESTie
Multi-Room MappingYESYESTie

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Dreame L40 Ultra Gen 2
  • iRobot Roomba Plus 505

Loading price history...

Frequently Asked Questions

Which is better overall: Dreame L40 Ultra Gen 2 or iRobot Roomba Plus 505?

The Dreame L40 Ultra Gen 2 is better overall as a robot vacuum. It wins on 25000Pa of suction, 231 minutes of battery life, and a 3-year warranty. The iRobot Roomba Plus 505 is the alternative when you want a broader connectivity mix.

What is the biggest difference between the Dreame L40 Ultra Gen 2 and the iRobot Roomba Plus 505?

Cleaning power and dock support. Dreame L40 Ultra Gen 2 is listed at 25000Pa of suction, against 7000Pa on iRobot Roomba Plus 505, and the rest of the dock features follow that split.

Which robot vacuum runs longer on a charge, the Dreame L40 Ultra Gen 2 or the iRobot Roomba Plus 505?

Dreame L40 Ultra Gen 2 is listed at 231 minutes of battery life, against 180 minutes on iRobot Roomba Plus 505. Runtime still depends on suction mode and mopping, but the published figure favors Dreame L40 Ultra Gen 2.

Who should buy the Dreame L40 Ultra Gen 2?

Buy the Dreame L40 Ultra Gen 2 if 25000Pa of suction is the priority, along with 231 minutes of battery life and a 3-year warranty. Choose the iRobot Roomba Plus 505 instead when a broader connectivity mix matters more than those extras.

Who should buy the iRobot Roomba Plus 505?

Buy the iRobot Roomba Plus 505 if a broader connectivity mix is the priority. Choose the Dreame L40 Ultra Gen 2 instead when 25000Pa of suction matters more than those extras.

Full comparison table

Compare all 155 Robot Vacuums side by side

You are looking at two of them. The full table lines up all Robot Vacuums in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 155 Robot Vacuums
  • 46 specs compared
  • 41 filters
Open the full comparison
More Robot Vacuums

Top Robot Vacuums to compare next

155 robot vacuums from 12 brands compared: Roborock, Dreame, Ecovacs, iRobot and more. Suction, navigation, mopping, self-emptying docks and prices.

All Robot Vacuums
Dreame

More Dreame products

A sharper look at other Dreame products worth comparing.

Explore Dreame
iRobot

More iRobot products

A sharper look at other iRobot products worth comparing.

Explore iRobot
Independent · Not sponsoredBrands never pay for placement or rankings. Affiliate commissions never influence our comparisons.
© 2026 Smart Home Compared
Search