iRobot Roomba 105 Vac + AutoEmpty vs iRobot Roomba Plus 405 Combo

The iRobot Roomba Plus 405 Combo rates 3.4 among self-cleaning dock robot vacuums; the iRobot Roomba 105 Vac + AutoEmpty rates 3.3 among vacuum only ones. The iRobot Roomba 105 Vac + AutoEmpty costs $50.99 less ($449 vs $499.99).

iRobot Roomba Plus 405 Combo

#103 in Self-cleaning dock3.4Full 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 $499.99

$499.99

iRobot Roomba 105 Vac + AutoEmpty

#7 in Vacuum only3.3Full review

A budget self-emptying LiDAR vacuum for hard floors and low carpet in homes without pets; its poor pet hair score rules it out for shedding animals.

Amazon $449

$449

Prices were last checked October 27, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Scores side by side

These two sit in different type classes (self-cleaning dock and vacuum only), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.

Factor weight	iRobot Roomba Plus 405 Combo	iRobot Roomba 105 Vac + AutoEmpty
Overall rating	3.4/5	3.3/5
Cleaning 30%	11 measured 58% of sand from carpet, 49.5% of pet hair, some hair tangled (0.2)	29 measured 82% of sand from carpet, 29% of pet hair, some hair tangled (0.8)
Value 25%	78 $500	35 $449
Dock 20%	87 Self-empties the bin, washes the mop	100 Self-empties the bin
Navigation 15%	65 LiDAR	65 LiDAR
Mopping 10%	56 Dual spinning pads	Not scored

Independent tests

iRobot Roomba Plus 405 Combo

Tested by	Carpet deep clean	Pet hair	Hair tangle (0 = none)	Area per charge	Conditions
Vacuum Wars	58%	49.5%	0.2	1,421 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).