Dyson Gen5detect vs Shark IP3251
The short answer
Shark IP3251 comes out ahead overall with 7.7/10 against 7.2/10 for the Dyson Gen5detect. Dyson Gen5detect is stronger on pet hair pickup, hair-tangle resistance and versatility & pet tools. Shark IP3251 is stronger on battery & runtime, ease of use & maintenance and value. At current verified prices, the Shark IP3251 costs about $605.26 less.
- Choose the Dyson Gen5detect if: Allergy-sensitive pet households that want the cleanest exhaust and top low-pile pickup whatever the 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 Gen5detect | Shark IP3251 |
|---|---|---|
| Pet hair pickup | 8.890%/62% (TechGearLab); Bob Vila needed 2-3 passes on its rug | 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 Motorbar head; no zero-wrap result reported | 6.0TechGearLab: hair and fur wrap around the rollers |
| Versatility & pet tools | 8.5Large kit with the Hair Screw tool; RTINGS furniture score 8.5 | 7.0MultiFlex wand, but the motorized pet tool costs extra and the bumper limits edge cleaning |
| Battery & runtime | 5.567 min low / 7 min max (TechGearLab); click-in spare battery | 7.047 min low / 12 min max in testing, detachable battery, slow 4.7 h charge |
| Ease of use & maintenance | 5.5About 7.6 lb total; Tom's Guide calls it a workout to use | 8.5Dock holds up to 45 days of debris; 3.9 lb handheld |
| Filtration, safety & repairability | 8.5Best TechGearLab particle count (37), sealed HEPA, 2-year warranty, no recalls | 8.5Post-motor HEPA, 'Excellent' emissions per TechGearLab, 5-year warranty, no cordless recalls |
| Value | 4.0$961 from a marketplace seller; most expensive pick | 7.5$549 from Amazon, dock included |
Specifications
| Spec | Dyson Gen5detect | Shark IP3251 |
|---|---|---|
| Pet hair removed, low-pile carpet (TechGearLab test) | 90 % | 84 % |
| Pet hair removed, high-pile carpet (TechGearLab test) | 62 % | 74 % |
| Runtime at max power (TechGearLab) | 7 min | 12 min |
| Claimed max runtime (eco mode) | 70 min | 70 min |
| Swappable/click-in battery | Yes | Yes |
| Handheld unit weight (TechGearLab measured) | 5 lbs | 3.9 lbs |
| Dustbin capacity | 0.77 L | 0.7 L |
| Claimed suction (max) | 280 AW | — |
| Anti-tangle/de-tangling floorhead (claimed) | Yes | Yes |
| Auto-empty dock included | No | Yes |
| HEPA filtration (manufacturer claim) | Yes | Yes |
| Manufacturer warranty | 2 years | 5 years |
Dyson Gen5detect
Pros
- Lowest small-particle count in the group
- 90% on low-pile pet hair
- Best furniture pet hair score here
- Sealed HEPA filtration
- Removable battery
Cons
- 7 minutes at max power
- Heavy
- Highest price in the group
- Bob Vila needed 2-3 passes on its rug
The choice for households where air quality matters most and budget is flexible. The Amazon price is a marketplace markup, so compare Dyson and Best Buy first.
Full Dyson Gen5detect 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.