The Mid-Size Sweet Spot
At 15,000 gallons — typically a 14×28 ft inground pool — a full-coverage cleaner like the Cayman or Quantum gives you floor, wall, and (with the Quantum) waterline cleaning without overspending. As one of the largest authorized dealers and retailers of robotic pool cleaners online, we've hand-tested 70+ robots across every major brand — every recommendation below comes from real poolside experience, and every unit we sell is factory-direct with a full manufacturer warranty.
Gallons vs. Feet: What Actually Matters
Robot ratings are based on pool length, not volume — the cable has to reach the far wall. Use this quick conversion: a 12×24 ft pool is roughly 10–13k gallons, 14×28 ft is ~15–19k, 16×32 ft is ~19–25k, and 18×36 ft is ~25–31k, depending on depth. If your pool is unusually deep or long for its volume, size up.
Our Picks at This Size
The Cayman is the value play; the Quantum is the upgrade that adds NanoFilters™ and waterline jets. If your pool collects heavy leaves, the Premier justifies its step-up here too. All are at or under $1,000 street price much of the year.
