iGarden K Series review

The K Series is iGarden's cordless robotic cleaner platform, sold in three runtime tiers built around the same core hardware: the K36, K70, and K90. Rather than one fixed model, you pick the battery size, and price, that matches your pool, from a 3.6-hour floor-only cleaner around $449 up to a 9-hour flagship around $949. All three climb walls, scrub the waterline, and steer themselves with iGarden's 3D S-Path planning, backed by an unusually long 3-year warranty.

Three battery sizes, one platform

The K36, K70, and K90 share the same cleaning hardware, suction, and navigation; the difference is battery capacity and price. iGarden rates the K36 at up to 3.6 hours on floor-only cleaning from a 5Ah, 127Wh battery (around $449 on sale, $799 list). The K70 steps up to a 7.5Ah, 192Wh pack good for a claimed 7 hours (around $799, $1,249 list), and the K90 tops out at 9.4Ah, 242.8Wh for up to 9 hours (around $949, $1,549 list). All three recharge in roughly 3.5 to 5 hours. That spread lets you buy just enough runtime for a small above-ground pool without paying flagship money, or size up to the K90 for a large in-ground pool that needs a longer single cycle.

Full floor, wall, and waterline coverage

On paper the K Series covers the whole pool: floor, walls, and waterline, with the ability to climb walls and slopes and handle steps on both in-ground and above-ground pools (concrete, vinyl, fiberglass, mosaic tile, and stainless finishes are all listed as compatible). There are four cleaning modes: floor only, wall and waterline, wall-and-waterline-then-floor, and full coverage, so you can target a greasy waterline ring one day and run the whole pool the next. The catch is runtime math: full coverage climbing walls and scrubbing the waterline is far more demanding than rolling across a flat floor, so iGarden's own full-coverage runtimes drop to 2.25 hours (K36), 3.75 hours (K70), and 4.75 hours (K90), roughly half the floor-only figures.

Suction, filtration, and pool size

iGarden rates suction at 22,000 LPH with a 200% Turbo mode and what it calls an AI-Inverter motor system, paired with dual brushes and a 4-liter debris basket. Filtration runs through a dual-layer mesh, a 50-micron layer plus a coarser 180-micron layer, built to catch leaves, bugs, and coarse debris rather than the sub-5-micron dust and algae haze that pricier cleaners with ultra-fine filters target. The K36 and K70 are rated for pools up to about 5 x 10 meters; the K90 stretches that to 6 x 12 meters, close to 39 feet on the long side. Water depth range is 1 to 2.5 meters and water temperature 4 to 35°C, which covers most seasonal pool conditions.

Handling, navigation, and scheduling

Navigation is handled by iGarden's 3D S-Path planning, and the robot self-parks at the end of a cycle rather than leaving you to fish it out mid-pool. Control runs through iGarden's app, which includes an AI Timer for scheduled auto-restarts every 24, 48, or 72 hours, so the cleaner can run itself on a rotation without you starting each cycle by hand. At about 9.8 kg (21.6 lb) and 489 x 389 x 240 mm, it's on the heavier side for a cordless cleaner, so lifting it out solo takes a bit more effort than lighter rivals.

The trade-offs

The 50/180-micron filtration is the clearest compromise: it's built for leaves, bugs, and visible debris, not the fine dust or algae haze that ultra-fine 3-micron filters are designed to pull out, so owners fighting hazy water should look elsewhere. Full-coverage runtime is also meaningfully shorter than the floor-only number on the box, worth planning around on a large pool. And as a newer entrant to the cordless robot category, iGarden doesn't have the multi-year track record of more established brands, though the 3-year warranty is a longer commitment than many competitors offer.