Best pool cleaner for inground pools

Pool ratings, prices and warranty terms checked 5 September 2026

An inground pool asks for three things an above-ground pool does not: wall climbing on a hard surface, a waterline scrub, and enough range to finish a pool that may be twelve metres long. 56 of the 66 cleaners we track publish all of floor, wall and waterline cleaning, and this page sorts them by the pool rating each manufacturer actually publishes.

The ratings are not published in the same unit

This is the first thing to know, because it quietly breaks most comparisons. Dolphin and Zodiac publish a maximum pool length in metres. Aiper, Beatbot and Wybot publish a surface area, sometimes in square metres and sometimes in square feet, and in two cases they publish both with figures that do not agree with each other.

Those are not the same claim. A 300 square metre rating on a machine with a three hour battery says nothing useful about a 20 metre lap pool that is four metres wide, which is 80 square metres of floor but a long way to travel. We list each rating in the unit the manufacturer published it in and never convert one into the other.

Steps, benches and sun ledges

Almost every inground pool built in Australia in the last twenty years has a wide entry step or a sun ledge, and almost no product page tells you whether the machine cleans them. Where brands do address it, they are specific: two Dolphin models publish a step and ledge capability with a depth attached, one to 30 centimetres and one to 20. At the other end, one Aiper manual states plainly that the machine does not clean steps or benches and is not suitable for infinity pools.

Everything in between is silence, and silence is not a yes. If your pool has a ledge you care about, ask the retailer to point at the line in the manual before you buy.

Corded or cordless

On an inground pool this is a genuine trade, not a generation gap. 22 of the 56 models here are corded and the rest run on a battery. A corded machine cannot run out mid-cycle, which is the failure mode that matters on a long pool, but the cable has to reach a power point and it will tangle. A battery machine is easier to drop in and lift out, and it introduces a consumable part that no manufacturer publishes a cycle life for.

If you go cordless, read the runtime as a ceiling. It is quoted on the gentlest cleaning mode, so a full floor, wall and waterline cycle on an inground pool runs shorter than the headline figure. The cordless comparison and the battery register cover that in detail.

What decides it, once the pool fits

Once you have a shortlist that is rated for your pool and does the waterline, the remaining differences are smaller than the price gaps suggest. Mapping and app control do not change how clean the pool gets. Filtration figures cannot be compared across brands, because Dolphin publishes no micron rating at all. Running cost is a rounding error at roughly $4.86 to $7.85 of electricity across a season, against about $358 a year for the pump, so it should not enter the decision. See the running-cost register for the arithmetic.

What is left is who repairs the machine in Australia, and that varies far more than price does. Warranty terms in this set do not track price: identical prices carry two years from one brand and four from another, and the most expensive machine in the register has one of the shortest terms and no local service network. The warranty register lays out the evidence brand by brand.

Models we left off this page

8 cleaners in our register publish floor or floor-and-wall cleaning but no waterline capability. They are perfectly reasonable machines and several are explicitly aimed at above-ground pools, but on an inground pool they leave the job that most annoys owners undone. They are covered on the above-ground page and listed in full in the specification register.

Prices and pool ratings checked 5 September 2026. Of 72 models tracked, 71 have an Australian price and 70 publish a warranty term. Manufacturer pool ratings are quoted verbatim in the unit each brand publishes. Confirm the current price with the retailer before buying.