Quick takeaway
iRobot Roomba s9 Plus leads this matchup 0 to 0 on measured spec rows and by 100 points overall. Kenmore Elite 31150 Pet Friendly is also about $100.00 cheaper at the latest tracked price.
iRobot Roomba s9 Plus vs Kenmore Elite 31150 Pet Friendly
Choose iRobot Roomba s9 Plus if...
Pick iRobot Roomba s9 Plus if its current price, brand, or design fits your shortlist better than Kenmore Elite 31150 Pet Friendly. It currently costs about $100.00 more, so make sure those wins matter to you.
Choose Kenmore Elite 31150 Pet Friendly if...
Pick Kenmore Elite 31150 Pet Friendly if its current price, brand, or design fits your shortlist better than iRobot Roomba s9 Plus.
Side-by-side specs
This is the raw comparison view. It is there for the rows that actually decide the purchase, not just the headline winner badge.
Performance
| Spec | iRobot Roomba s9 Plus | Kenmore Elite 31150 Pet Friendly |
|---|---|---|
| Suction | 40x (strongest in Roomba line) | - |
Battery and power
| Spec | iRobot Roomba s9 Plus | Kenmore Elite 31150 Pet Friendly |
|---|---|---|
| Battery Life | Up to 120 min | - |
| Power Source | - | Corded |
Dimensions
| Spec | iRobot Roomba s9 Plus | Kenmore Elite 31150 Pet Friendly |
|---|---|---|
| Dustbin | 0.5 L | - |
General
| Spec | iRobot Roomba s9 Plus | Kenmore Elite 31150 Pet Friendly |
|---|---|---|
| Bin Type | - | Bagless |
| Brand | iRobot | Kenmore |
| Category | Vacuum cleaner | Vacuum cleaner |
| Type | Robot vacuum | Upright or stick |
The verdict
Based on 13 spec comparisons plus user ratings, the iRobot Roomba s9 Plus comes out ahead with a stronger overall score.
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Comparison FAQ
These answers explain how the score is built, when the lower-scoring option still makes sense, and what to confirm before you buy.
What is the iRobot Roomba s9 Plus vs Kenmore Elite 31150 Pet Friendly score measuring?
VSFinder compares 12 visible spec rows, then blends those wins with current price and Amazon rating signals so the page reflects both raw specs and real shopping context.
When does the lower-scoring option still make sense?
The lower-scoring model can still be the better buy if the few areas where it wins line up with how you shop. That matters most when those wins cover the exact features you care about more than the overall leader.
What should I confirm before I buy?
Confirm the live Amazon listing for price and availability, then double-check the few spec rows that matter most to your use case. We currently track $299.99 for iRobot Roomba s9 Plus and $199.99 for Kenmore Elite 31150 Pet Friendly.