Shark IP3251 vs Shark IZ862H
The short answer
Shark IP3251 comes out ahead overall with 7.7/10 against 7.1/10 for the Shark IZ862H. Shark IP3251 is stronger on pet hair pickup, versatility & pet tools, ease of use & maintenance and filtration, safety & repairability. Shark IZ862H is stronger on value. At current verified prices, the Shark IZ862H costs about $20.00 less.
- 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.
- Choose the Shark IZ862H if: Carpet-heavy pet homes that want solid high-pile pickup for about $330.
Scores by criterion
| Criterion | Shark IP3251 | Shark IZ862H |
|---|---|---|
| Pet hair pickup | 8.5Best high-pile result (74%) and 84% low pile in TechGearLab testing; RTINGS gives the IP1251 sibling 7.5 | 7.674%/64% (TechGearLab) and 7.3 from RTINGS |
| Hair-tangle resistance | 6.0TechGearLab: hair and fur wrap around the rollers | 6.0Brushroll isn't removable; hair can stick (RTINGS) |
| Versatility & pet tools | 7.0MultiFlex wand, but the motorized pet tool costs extra and the bumper limits edge cleaning | 6.5No turbo upholstery tool |
| Battery & runtime | 7.047 min low / 12 min max in testing, detachable battery, slow 4.7 h charge | 7.055 min low / 11 min max (TechGearLab), removable battery |
| Ease of use & maintenance | 8.5Dock holds up to 45 days of debris; 3.9 lb handheld | 7.03.6 lb handheld, 0.68 L bin |
| Filtration, safety & repairability | 8.5Post-motor HEPA, 'Excellent' emissions per TechGearLab, 5-year warranty, no cordless recalls | 7.0Sealed HEPA claim; TechGearLab particle count 55; odor cartridge ingredients not disclosed |
| Value | 7.5$549 from Amazon, dock included | 8.0$330 from Amazon |
Specifications
| Spec | Shark IP3251 | Shark IZ862H |
|---|---|---|
| Pet hair removed, low-pile carpet (TechGearLab test) | 84 % | 74 % |
| Pet hair removed, high-pile carpet (TechGearLab test) | 74 % | 64 % |
| Runtime at max power (TechGearLab) | 12 min | 11 min |
| Claimed max runtime (eco mode) | 70 min | 60 min |
| Swappable/click-in battery | Yes | Yes |
| Handheld unit weight (TechGearLab measured) | 3.9 lbs | 3.6 lbs |
| Dustbin capacity | 0.7 L | 0.68 L |
| Anti-tangle/de-tangling floorhead (claimed) | Yes | Yes |
| Auto-empty dock included | Yes | No |
| HEPA filtration (manufacturer claim) | Yes | Yes |
| Manufacturer warranty | 5 years | — |
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 →Shark IZ862H
Pros
- 64% on high-pile pet hair
- Mid-range price
- HEPA filtration
- Removable battery
Cons
- Brushroll is not removable
- Hair can still stick to it
- No turbo upholstery tool
- May be phasing out
A good deal for carpeted homes if you can find it in stock. It trails the Shark IP3251 on tangles and convenience.
Full Shark IZ862H 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.