iRobot Roomba Plus 405 Combo vs Yeedi S20 Infinity: Which to Buy

The Yeedi S20 Infinity is the better robot vacuum overall, rated 4.3 to 3.2. The Yeedi S20 Infinity leads on cleaning, navigation and mopping.

Higher rated

Yeedi S20 Infinity

#30 in Self-cleaning dock4.3Full review

A strong-cleaning bagless roller-mop robot from ECOVACS’ sister brand; good results in testing, but yeedi publishes few specs and sells it only on Amazon.

Amazon $799.99

$799.99

iRobot Roomba Plus 405 Combo

#103 in Self-cleaning dock3.2Full review

Suits large, mostly hard-floor homes that want a self-washing mop dock from a familiar brand; weak carpet and pet hair results make it a poor fit for rugs and pets.

Amazon $799.99

$799.99

Prices were last checked November 1, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Which should you buy?

Choose the Yeedi S20 Infinity for cleaning (measured 89% of sand from carpet, 100% of pet hair, no hair tangled vs measured 58% of sand from carpet, 49.5% of pet hair, some hair tangled (0.2)), navigation (LiDAR + 3D light vs LiDAR) and mopping (Roller, extends to edges vs Dual spinning pads).

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every self-cleaning dock robot vacuum; a clear win is highlighted. How we rank explains each one.

Factor weight	Yeedi S20 Infinity	iRobot Roomba Plus 405 Combo
Overall rating	4.3/5	3.2/5
Cleaning 30%	86 measured 89% of sand from carpet, 100% of pet hair, no hair tangled	11 measured 58% of sand from carpet, 49.5% of pet hair, some hair tangled (0.2)
Value 25%	50 $800	50 $800
Dock 20%	100 Self-empties the bin, washes the mop, hot-water mop wash, hot-air mop drying, doses detergent	87 Self-empties the bin, washes the mop
Navigation 15%	85 LiDAR + 3D light	65 LiDAR
Mopping 10%	85 Roller, extends to edges	56 Dual spinning pads

Independent tests

Yeedi S20 Infinity

Tested by	Carpet deep clean	Pet hair	Hair tangle (0 = none)	Area per charge	Conditions
Vacuum Wars	89%	100%	0	1,335 sq ft	Embedded sand in medium-pile carpet; flattened 2.5 in pet hair on carpet, two runs; 7 in hair tangle on hard floor (0 = none wrapped).