iRobot
Comparison · 2 robots
iRobot Roomba 105 Vac · iRobot Roomba Plus 415 Combo
All robot vacuums. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.
- iRobot Roomba 105 Vac
- iRobot Roomba Plus 415 Combo
01 Classification
What each one does on its own.
The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.
V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
iRobot Roomba 105 VaciRobot Roomba Plus 415 Combo
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment
Where they actually differ.
The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.
Capability
Task completion16% of score
Does it finish the job it is sold to do, unattended
5860
- iRobot Roomba 105 Vac58
- iRobot Roomba Plus 415 Combo60
18median 72 across 433 scored robots100
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
7068
- iRobot Roomba 105 Vac70
- iRobot Roomba Plus 415 Combo68
0median 70 across 421 scored robots100
Edge-case recovery10% of score
Does it recover from the failures its category presents
4352
- iRobot Roomba 105 Vac43
- iRobot Roomba Plus 415 Combo52
18median 52 across 320 scored robots100
Operating envelope4% of score
How far conditions can vary before performance drops
5660
- iRobot Roomba 105 Vac56
- iRobot Roomba Plus 415 Combo60
28median 68 across 397 scored robots100
Dependability
Field failure rate16% of score
Documented hardware failures per owner-year
7055
- iRobot Roomba 105 Vac70
- iRobot Roomba Plus 415 Combo55
6median 70 across 359 scored robots100
Software stability14% of score
Whether updates fix more than they break
7755
- iRobot Roomba 105 Vac77
- iRobot Roomba Plus 415 Combo55
15median 65 across 342 scored robots100
Support longevity10% of score
Committed parts, service and updates, with dates
6368
- iRobot Roomba 105 Vac63
- iRobot Roomba Plus 415 Combo68
0median 62 across 429 scored robots100
Ownership burden
Routine maintenance12% of score
Hands-on time it asks for in normal operation
4384
- iRobot Roomba 105 Vac43
- iRobot Roomba Plus 415 Combo84
22median 67 across 434 scored robots100
Consumables8% of score
Parts that must be bought to keep it working
5166
- iRobot Roomba 105 Vac51
- iRobot Roomba Plus 415 Combo66
8median 69 across 434 scored robots100
03 Measured against the class
How far apart is a long way?
A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.
Price217 with a published figure
$449.99$599.99
- iRobot Roomba 105 Vac$449.99
- iRobot Roomba Plus 415 Combo$599.99
$160median $799.99$2,599
Suction (mode not stated)210 with a published figure
7,000 Pa20,000 Pa
- iRobot Roomba 105 Vac7,000 Pa
- iRobot Roomba Plus 415 Combo20,000 Pa
1,000 Pamedian 10,000 Pa42,000 Pa
Charge time165 with a published figure
120 min330 min
- iRobot Roomba 105 Vac120 min
- iRobot Roomba Plus 415 Combo330 min
90 minmedian 240 min420 min
Noise156 with a published figure
72 dB60 dB
- iRobot Roomba 105 Vac72 dB
- iRobot Roomba Plus 415 Combo60 dB
43 dBmedian 67 dB80 dB
Weight191 with a published figure
6.2 lbs6.4 lbs
- iRobot Roomba 105 Vac6.2 lbs
- iRobot Roomba Plus 415 Combo6.4 lbs
3.6 lbsmedian 8.4 lbs25 lbs
Height232 with a published figure
4.1 in3.3 in
- iRobot Roomba 105 Vac4.1 in
- iRobot Roomba Plus 415 Combo3.3 in
2.6 inmedian 3.8 in7.8 in
Not compared, because fewer than two of these robots carry a published figure: Runtime.
04 Ownership
What the numbers leave out.
The trade-off
What each design gives up to be good at what it is good at.
iRobot Roomba 105 Vac
Vacuum-only eliminates dock complexity, but it also eliminates mopping and self-emptying; the $249.99 entry price buys a machine you would replace with a costlier combo if hybrid cleaning ever becomes desirable.
iRobot Roomba Plus 415 Combo
Water-only pad washing skips a chemical cartridge to refill, and skips the deeper stain-lift a detergent wash cycle adds elsewhere in iRobot’s lineup.
No published per-charge runtime: buyers get a 330-minute charge time and no way to know how long one cleaning session actually lasts.
Who each one is wrong for
Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.
iRobot Roomba 105 Vac
- Multi-floor homes without per-floor dock setup
- Single dock location. Multi-floor operation requires manual dock relocation or purchasing additional units per floor.
- Owners combining vacuuming and mopping in one unit
- Vacuum-only design excludes mop capability. Separate mopping appliance or robot needed.
- Households with pets and high-shedding carpets
- No self-emptying dock. High-shedding environments require more frequent manual bin emptying (weekly or bi-weekly).
iRobot Roomba Plus 415 Combo
- Households needing a documented per-charge runtime figure
- iRobot has not published a per-charge runtime figure for this model, only a 330-minute charge time for the 5200mAh battery, leaving coverage-per-charge unconfirmed for buyers who need that number before deciding.
- Owners wanting automatic detergent dispensing at the dock
- The AutoWash Dock washes and heat-dries the DualClean mop pads with water only; buyers wanting an automatic cleaning-solution cycle for dried-on messes need a different dock tier.
- Buyers prioritizing the strongest suction in iRobot's combo lineup
- At 20,000 Pa, this model is the entry point among iRobot's current AutoWash Dock combos; buyers wanting the strongest suction in that lineup should compare other current models.
- Thick, deep-pile carpet homes
- No independent test of thick-pile performance was found, and 20,000 Pa is the lowest published suction figure among iRobot's current wash-dock combo models, so performance on heavy shag or high-pile rugs remains unverified.
- Buyers requiring a multi-year ownership track record
- The Plus 415 Combo launched summer 2026 with no independent hands-on reviews published yet; owners wanting years of documented field reliability should wait or choose a longer-tenured model.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
iRobot Roomba 105 Vac
- Weekly: Brush hair removal and visual inspection on pet homes.
- Monthly: Dust bin rinse and LiDAR dome wipe with microfiber cloth.
- Every 3-6 months: Main brush replacement (estimate $15-25 per brush).
- Annually: Filter replacement and dust-bin seal rinse or swap.
iRobot Roomba Plus 415 Combo
- Weekly: Wipe the LiDAR turret and check the roller for hair wrap.
- Monthly: Inspect the edge-sweeping brush for wear and clean the AutoWash Dock’s wash chamber.
- Every 3-6 months: Replace the DualClean mop pads if worn (one pair included in box).
- Every 3-6 months: Replace the dirt disposal bag as it fills (2 bags included in box).
- Annually: Check dock water lines and hose connections for mineral buildup.
- As needed: Empty and rinse the dock’s clean-water tank between wash cycles during heavy use.
05 Evidence
How much each of these is standing on.
Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.
| Robot | Evidence status | Sources reviewed | Last assessed |
|---|---|---|---|
| iRobot Roomba 105 Vac | Verified | 9 | Aug 2026 |
| iRobot Roomba Plus 415 Combo | Verified | 9 | Sep 2026 |
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