Shark PowerDetect Clean & Empty vs LG CordZero All-in-One A931KWM
Quick take: The Shark PowerDetect Clean & Empty costs $51 less; the Shark PowerDetect Clean & Empty runs longer per charge (70 vs 60 min).
Which one to buy
Five years of warranty against one is the quiet difference between two self-emptying sticks priced $51 apart. The Shark PowerDetect Clean & Empty at $549 and the LG CordZero All-in-One A931KWM at $600 both dock into a base that empties the bin and recharges the battery, and both use a dual-roller head that moves from hardwood to rugs without a swap. LG's coverage is 1 year, with a 10-year motor warranty that covers parts only. Given how owners describe each dock, that gap matters.
Shark owners in heavy-shedding homes say the brushroll stays clear for months to years and that they touch the dock about once a month. LG owners report debris, especially pet hair, sticking around the filter or stick motor during emptying, so the tower needs more hand-clearing than promised, and its bags are an ongoing cost. Battery and auto-empty reliability make up a large share of LG complaints. Runtime claims fall short on both, but further on the LG: owners see 14 to 20 minutes at full suction against the Shark's typical 30-45 in mixed cleaning.
The LG's case is weight and gadgets. At 5.95 lbs it is easy to lift onto furniture, while Shark owners call their stick bulky and top-heavy on stairs. The LG adds an LED headlight and a ThinQ app that tracks filter and bag upkeep, and owners say it handles wool rugs well. It is rated at 84 dB, and the tower is a large footprint for small apartments.
The Shark has weak spots too: thick plush carpet is its hardest surface, its empty cycle is loud, it only docks with the wand attached, and its sensors need wiping. For pet homes and anyone who wants the dock to just work, the Shark is the safer buy. The LG is the pick only when a light stick matters more than runtime and reliability.
Shark PowerDetect Clean & Empty
For pet households that want the dock to handle hair without fuss, plus a 5-year warranty behind it.
LG CordZero All-in-One A931KWM
Suits someone who needs a stick under 6 lbs and likes app maintenance alerts, and accepts short full-power runtime and a fussier dock.
| Spec | Shark PowerDetect Clean & Empty | LG CordZero All-in-One A931KWM |
|---|---|---|
| Price | ~$549 | ~$600 |
| Type | Cordless Stick | Cordless Stick |
| Suction | Not disclosed | 210 AW |
| Battery | 70 min | 60 min |
| Navigation | — | — |
| Filtration | HEPA | 5-Step Filtration System |
| Cordless | Yes | Yes |
| Bagged | No | No |
| Noise | — | 84 dB |
| Dustbin | — | 33.8 oz |
| Water tank | — | — |
| Self-empty dock | No | Yes |
| Auto mop washing | No | No |
| Hot water washing | No | No |
| Obstacle avoidance | No | No |
| Carpet detection | No | No |
| Auto mop lifting | No | No |
| Multi-floor mapping | No | No |
| App control | No | Yes |
| Dimensions | — | 10.1 x 11.7 x 39.7 in |
| Weight | — | 5.95 lbs |
| Warranty | 5 years | 1 year (10-year motor warranty, parts only) |
Pros & cons
Shark PowerDetect Clean & Empty
- ✓Auto-empty dock stores up to 45 days of debris and recharges after every clean
- ✓DuoClean Detect nozzle handles hard floor and carpet without swapping heads
- ✓Detects dirt, edges, and direction changes and boosts suction automatically
- ✓MultiFlex wand bends to clean under furniture and folds for compact storage
- ✓5-year warranty is the longest of any premium stick
- ✓Excellent tested pickup at a street price near $400
- ✗Shark publishes no suction figure for spec comparison
- ✗Battery life is average, and boost mode drains it quickly
- ✗Nozzle can get grabby and hard to push on thick rugs at high power
- ✗Dock is bulky compared with bag-based rivals
- ✗No app, screen, or particle counter at a price where rivals offer them
LG CordZero All-in-One A931KWM
- ✓Auto-empty, auto-charge tower for meaningfully less than LG's flagship A949KTMS
- ✓Kompressor tech compacts debris so the small bin needs emptying less often
- ✓Dual Floor Max nozzle handles carpet and hard floors without swapping heads
- ✓ThinQ app tracks battery health, filter status, and runs diagnostics
- ✓Washable, removable filters keep ongoing filter costs low
- ✓LED headlight and telescoping wand for reach and visibility
- ✓Real street price (~$400) undercuts the $599.99 list price substantially
- ✗Single battery caps runtime at about an hour, less in Power/Turbo mode
- ✗Long-term owners report mixed cleaning performance, including units that cut out after seconds of runtime
- ✗Multiple owners report the vacuum breaking within roughly three months of normal use
- ✗Auto-empty tower reliability is inconsistent — works well for some, stops working reliably for others
- ✗Tower disposal uses proprietary bags, not a simple bagless bin — a recurring cost
- ✗No mop attachment or second battery — those are reserved for the pricier A949KTMS
Shark PowerDetect Clean & Empty vs LG CordZero All-in-One A931KWM: common questions
Does the LG CordZero A931KWM's tower clog with pet hair more than the Shark PowerDetect Clean & Empty's dock?▾
By owner accounts, yes. LG owners report debris, especially pet hair, getting stuck around the filter or stick motor during emptying. Shark owners in husky and multi-cat homes say the brushroll resists wrap and they empty the dock roughly monthly.
Which runs longer, the Shark PowerDetect Clean & Empty or the LG CordZero A931KWM?▾
The Shark is rated at 70 minutes and owners see about 30-45 in mixed cleaning. The LG is rated at 60, but owners report 14 to 20 minutes at full suction, which is the most common complaint about it.
Is the LG CordZero A931KWM lighter to use than the Shark PowerDetect Clean & Empty?▾
Yes. The LG weighs 5.95 lbs and owners find it easy to lift onto furniture or carry upstairs. Shark owners describe the PowerDetect as bulky and top-heavy, tiring for stairs and overhead work.
Does the LG CordZero A931KWM cost more to run than the Shark PowerDetect Clean & Empty?▾
Likely. LG owners point out that the tower uses replaceable bags on top of a washable filter, a recurring cost. The Shark's main upkeep, per owners, is washing the foam filter, checking the HEPA and wiping the sensors.