- Which is better for homes with pets?
- The Roomba 105 Combo has a multi-surface bristle brush, an edge-sweeping brush and a hair cutting tool in the box, and it empties itself so you handle debris less often. The Xiaomi S20's 5000 Pa suction and HEPA filter suit pet hair on hard floors, but you empty its bin by hand.
- Which lasts longer on one charge?
- The Xiaomi S20 is rated at up to 120 minutes. iRobot does not state a runtime for the Roomba 105 Combo, only a 3000 mAh battery, so the S20 is the safer pick for large floors.
- Is the Roomba worth the extra over the Xiaomi?
- At $169.00 at Home Depot as of November 7, 2026, the Roomba buys self-emptying, carpet detection and Alexa and Siri support. The S20's price was not provided; if it is much cheaper, its longer runtime and lower height may outweigh those extras.
- Which is better for mopping?
- The Roomba 105 Combo mops with a microfiber pad and uses Carpet Detect to avoid rugs. The Xiaomi S20 has a 270 ml tank and a Y-shape mopping route but no carpet detection, so you must keep it off rugs yourself.
- Will either fit under low furniture?
- The Xiaomi S20 is 9.8 cm tall, so it clears most low sofas and beds. The Roomba 105 Combo's height is not stated, and its AutoEmpty dock needs open floor space against a wall.
- Which works with more smart home systems?
- The Roomba 105 Combo supports Google Assistant, Amazon Alexa and Siri. The Xiaomi S20 supports Google Assistant only, through the Mi Home app.
