Dyson V15 Detect vs Shark IP3251
The short answer
Dyson V15 Detect and Shark IP3251 finish almost level in our scoring (7.6 vs 7.7 out of 10), so the right pick depends on what you value most. Dyson V15 Detect is stronger on pet hair pickup, hair-tangle resistance and versatility & pet tools. Shark IP3251 is stronger on battery & runtime, ease of use & maintenance, filtration, safety & repairability and value. At current verified prices, the Shark IP3251 costs about $349.01 less.
- Choose the Dyson V15 Detect if: Owners of heavy shedders who want the top lab-rated pet-hair pickup and Dyson's tool kit at less than flagship price.
- Choose the Shark IP3251 if: Pet owners with mixed floors and rugs who want strong carpet pickup and an auto-empty dock so they never touch the debris.
Scores by criterion
| Criterion | Dyson V15 Detect | Shark IP3251 |
|---|---|---|
| Pet hair pickup | 9.0RTINGS pet-hair score 9.5 and its top pet-hair cordless; TechGearLab 88%/60% | 8.5Best high-pile result (74%) and 84% low pile in TechGearLab testing; RTINGS gives the IP1251 sibling 7.5 |
| Hair-tangle resistance | 7.5De-tangling head; TechGearLab: some long hair wraps, easy to free | 6.0TechGearLab: hair and fur wrap around the rollers |
| Versatility & pet tools | 8.5Laser hard-floor head, upholstery tool, handheld mode; RTINGS furniture pet-hair score 8.0 | 7.0MultiFlex wand, but the motorized pet tool costs extra and the bumper limits edge cleaning |
| Battery & runtime | 6.064 min low / 9 min max (TechGearLab); genuine click-in battery 970938-01 | 7.047 min low / 12 min max in testing, detachable battery, slow 4.7 h charge |
| Ease of use & maintenance | 6.54.5 lb handheld, 0.77 L bin, no dock | 8.5Dock holds up to 45 days of debris; 3.9 lb handheld |
| Filtration, safety & repairability | 7.5Dyson claims whole-machine filtration (99.99% at 0.3 micron) but TechGearLab marks it not HEPA; 2-year warranty, genuine parts, no recalls | 8.5Post-motor HEPA, 'Excellent' emissions per TechGearLab, 5-year warranty, no cordless recalls |
| Value | 6.0About $692 at Best Buy; premium price | 7.5$549 from Amazon, dock included |
Specifications
| Spec | Dyson V15 Detect | Shark IP3251 |
|---|---|---|
| Pet hair removed, low-pile carpet (TechGearLab test) | 88 % | 84 % |
| Pet hair removed, high-pile carpet (TechGearLab test) | 60 % | 74 % |
| Runtime at max power (TechGearLab) | 9 min | 12 min |
| Claimed max runtime (eco mode) | 60 min | 70 min |
| Swappable/click-in battery | Yes | Yes |
| Handheld unit weight (TechGearLab measured) | 4.5 lbs | 3.9 lbs |
| Dustbin capacity | 0.77 L | 0.7 L |
| Claimed suction (max) | 240 AW | — |
| Anti-tangle/de-tangling floorhead (claimed) | Yes | Yes |
| Auto-empty dock included | No | Yes |
| HEPA filtration (manufacturer claim) | — | Yes |
| Manufacturer warranty | 2 years | 5 years |
Dyson V15 Detect
Pros
- Top pet hair pickup scores from RTINGS
- 88% on low-pile pet hair
- Full Dyson tool kit
- Removable battery
- Easy-to-clear roller
Cons
- 9 minutes at max power
- 60% on high pile
- Not rated HEPA by TechGearLab
- 2-year warranty
A proven pet hair cleaner for heavy shedders with mostly low-pile floors. Buy from Dyson or a major retailer rather than a marketplace seller, since the Amazon listing is third-party.
Full Dyson V15 Detect review →Shark IP3251
Pros
- Best high-pile pet hair result in TechGearLab's test
- Auto-empty dock with HEPA filtration
- Detachable battery
- 5-year limited warranty
- Excellent emitted air quality in TechGearLab testing
Cons
- Hair and fur wrap around the rollers
- Front bumper limits head-on edge cleaning
- Motorized upholstery tool sold separately
- Charge time is about 4.7 hours
The best all-round choice for pet owners with mixed floors. It is not the lab leader on every test, but its carpet results, dock and warranty add up to the strongest overall package at a price well below the premium Dysons.
Full Shark IP3251 review →Both products are part of our guide The Best Cordless Stick Vacuums for Pet Hair of 2026, where you can see every pick, how we score and current prices from each retailer.