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ComparisonHayward TigerShark QC and Polaris 9450 Sport

Up to three

All robot pool cleaners. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.

Where each one suits you.

The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.

Fit verdicts by condition for each robot
Condition Hayward TigerShark QC Polaris 9450 Sport
Pool type
In-ground GoodStandard in-ground operation; random pathing works well in pools under 15k gallons with consistent pump schedules. GoodDesigned specifically for in-ground pools; 4WD and wall-climbing brush are optimized for this geometry.
Above-groundthey differ GoodSuction cleaners pair directly with above-ground pump filtration; no separate equipment required. PoorManufacturer specifies in-ground pools only; drive configuration is not compatible with above-ground pool walls.
Mixed setupthey differ GoodWorks with either pool type, provided pool size stays under 15k gallons and floor is stable. DependsCapable only on the in-ground pool in the setup; does not cover any above-ground pool sharing the installation.
Pool size
Small (< 400 sqft) GoodRandom pathing naturally recycles the floor; small pools see consistent weekly coverage with light debris loads. GoodCovers pools well under 50 feet; 90-minute cycle completes full coverage with capacity to spare.
Medium (400 – 800)they differ DependsPool size around 12k–15k gallons benefits from 8+ hour daily pump schedules; shorter cycles risk coverage gaps. GoodSystematic gyroscopic navigation handles mid-size in-ground pools up to 50 feet within a single 90-minute cycle.
Large (> 800) PoorPools over 15k–20k gallons show unvisited dead zones; random pathing cannot ensure complete coverage. Poor60-foot swivel cable limits pool length coverage to 50 feet; pools exceeding that require a longer-cable model.
Debris load
Fine (sand / silt)they differ Poor100-micron mesh basket clogs rapidly with fine silt or algae; fine debris forces daily basket empties instead of weekly. GoodVortex Vacuum Technology draws fine sediment and particles into the 5L canister effectively.
Leaves / large debristhey differ DependsModerate leaf load manageable with weekly emptying; heavy seasonal leaf fall requires two to three empties per week. GoodExtra-large 5L canister handles leaf debris without mid-cycle full-canister pauses in most moderate-debris pools.
Algae / heavy foulingthey differ PoorActive algae blooms clog the fine-mesh basket within hours; unsuitable for pools experiencing algal blooms without chemical treatment. GoodSolid-blade scrubbing brush scrubs floor, wall, and waterline surfaces where algae accumulates.
Coverage you want
Floor only GoodPurpose-built for floor cleaning with fine-mesh debris capture; operates unattended on level floors. GoodSystematic floor coverage is the baseline function; gyroscopic navigation reduces missed strips.
Floor + wallsthey differ DependsFloor cleaning is effective; walls and steps require separate manual tools or a dedicated wall-climbing cleaner. Good4WD enables wall climbing; manufacturer specs include wall coverage as a documented capability.
Floor + walls + waterlinethey differ PoorNo built-in capacity for wall or waterline cleaning; random pathing keeps the cleaner on the pool floor. GoodSolid-blade scrubbing brush reaches the tile line and waterline surface; owner reports describe effective waterline scrubbing.

A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.

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Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.