Which is better for carpet?

The Dreame L40s Ultra. Its 19,000Pa Vormax suction is far higher than anything iRobot publishes for the 575 Combo, and it is built for versatile carpet cleaning.

Is the Dreame worth twice the price?

Only if you have heavy carpet or shedding pets. The Roomba costs $499.00 at Best Buy versus $999.99 at Dreame as of November 7, 2026, and rates higher with shoppers.

Which keeps rugs dry better?

The Roomba Plus 575 Combo. Its DualClean pads lift 10mm during a run, while the Dreame's pads are cleaned and dried on the dock rather than lifted mid-clean.

Which holds more dirt before I empty it?

The Dreame. Its 3.2L bag lasts up to 100 days of auto-empty. The Roomba's onboard bin is 0.07 gal and depends on the AutoWash dock to empty.

Which fits under low furniture?

The Roomba Plus 575 Combo. It weighs 9 lb and iRobot says the design is 46% smaller. The Dreame robot and dock weigh 29 lb.

Which has better obstacle avoidance?

Both are strong. The Dreame uses 3DAdapt avoidance and clears 1.57in steps. The Roomba uses ClearView Pro LiDAR with PrecisionVision AI and climbs 35mm thresholds.

Dreame L40s Ultra Robot Vacuum vs iRobot Roomba Plus 575 Combo

The Roomba Plus 575 Combo is the better buy for most shoppers. It costs $499.00 at Best Buy as of November 7, 2026, half the Dreame L40s Ultra's $999.99 at Dreame, and it has the higher rating, 4.8 versus 4.1. The Dreame wins on raw suction, 19,000Pa, and on a 3.2L bag that holds up to 100 days of debris. Pick the Dreame only if you have heavy carpet and want maximum power.

Today the iRobot Roomba Plus 575 Combo costs $500.99 less at its best price.

Ask our shopping agent

It checks today's price at every store, compares the alternatives and answers in about a minute.