Polaris Pool Cleaners

Three categories, one brand

That table is the whole decision, and it is made before you look at any model. Choosing the wrong category is expensive in a way that choosing the wrong model within a category is not.

The booster pump question

A pressure-side cleaner is genuinely cheap to buy, and it is cheap because the expensive part is already installed. Many in-ground pools built in the 1990s and 2000s were plumbed for one.

If yours was, a Vac-Sweep is an inexpensive, long-lived cleaner with plentiful spares that bags leaves rather than sending them through your filter. If yours was not, the retrofit costs more than the price difference to a robot - and then adds a second pump's electricity to every cycle. Our cost-to-run arithmetic puts that at roughly ten times a robot's seasonal draw.

Polaris publishes length ratings, which is useful

Where Wybot publishes coverage area, Polaris publishes pool length - 50 ft on the Freedom Plus, and 60 ft with a 70 ft swivel cable on the 9550 Sport. Both are directly checkable against a tape measure, which makes them more useful than most of what this category prints.

The cable-longer-than-the-pool pairing matters on a corded unit: a robot fighting a taut cord spends the cycle working against itself, and the swivel is what stops the cable knotting over a long run.

The suction-side option

The MAXX runs off your existing pump and needs nothing else. It is the cheapest automatic cleaner Polaris makes and it carries the highest ongoing maintenance burden, because everything it picks up goes into your pump basket and filter.

It also reduces filtration flow while it runs, and it does not clean the waterline. For a pool with light debris and an owner who does not mind emptying the basket, it is a reasonable buy. On a leaf-heavy pool it is the wrong tool.

The picks

Top pick - In-ground pools up to 50 ft, cordless

Polaris Freedom Plus Cordless Robotic Pool Cleaner

Polaris's cordless entry, rated to 50 ft, from the brand that built the pressure-side category it is replacing.

The published figure

Cordless, rated by the maker for in-ground pools up to 50 ft

Polaris spent decades on pressure-side cleaners that ran off a booster pump. Freedom Plus is the company's answer to the cordless robots that made that category obsolete for most owners.

A 50 ft length rating is a straightforward sizing figure: measure the long axis of your pool and compare.

Polaris parts and dealer support are widely available in a way that the newer direct-to-consumer brands are not, which matters more in year three than year one.

What it does well

• Length rating published in a directly checkable form
• Long-established dealer and parts network
• No booster pump, unlike the brand's pressure-side range

What it costs you

• Fewer published filtration and coverage specs than the Wybot units
• Cordless battery is still the wear part

Skip it if your pool is longer than 50 ft. The maker's rating is the limit, not a suggestion.

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Pick 2 - Long pools

Polaris 9550 Sport Robotic Pool Cleaner

A 60 ft rating and a 70 ft cable, which is the pairing that lets a corded robot reach the far end of a long pool without dragging.

The published figure

Rated for in-ground pools up to 60 ft, with a 70 ft swivel cable

Cable length has to exceed the pool length by a margin, or the robot spends the cycle fighting a taut cord. Polaris publishes both figures here, which makes the sizing check trivial.

The swivel is what stops the cable twisting into a knot over a long cycle. It is a small feature that decides whether a corded robot is tolerable.

For pools over 50 ft this is one of the few units that publishes a rating that covers them.

What it does well

• 60 ft pool rating with a 70 ft cable published together
• Swivel cable reduces tangling on long cycles

What it costs you

• Corded
• Heavier than the cordless units

Skip it if your pool is under 40 ft — you are paying for reach you cannot use.

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Pick 3 - Pools already plumbed for a booster pump

Polaris Vac-Sweep 280 Pressure-Side Cleaner

Makes sense only if your pool already has the booster pump plumbed in. Retro-fitting one to save money on the cleaner is backwards.

The published figure

Double venturi jet-powered, 31 ft of hose, requires a booster pump

Pressure-side cleaners run on water pressure from a dedicated booster pump. Many older in-ground pools were plumbed for one, and in that case the cleaner is inexpensive and the infrastructure is already paid for.

If your pool has no booster pump, adding one costs more than the difference between this and a robot, and it adds a second pump's electricity to every cycle.

Its debris goes into its own bag rather than through the filter, which is genuinely useful for leaves.

What it does well

• Cheap to buy if the booster pump already exists
• Handles leaves in its own bag rather than through the filter
• Long-established design with plentiful spares

What it costs you

• Requires a booster pump, which is an expensive retrofit
• Runs a second pump's worth of electricity every cycle
• Does not clean the waterline

Skip it if your pool has no booster pump. The retrofit cost makes this the expensive option, not the cheap one.

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Pick 4 - Running off the existing skimmer line

Polaris MAXX Premium Suction-Side Automatic Pool Cleaner

Uses the pump you already have and sends every piece of debris through your filter, which is the whole trade.

The published figure

Suction-side cleaner driven from the pool's own pump

A suction-side cleaner needs no extra pump and no power outlet. It plugs into the skimmer and runs on the filtration you already pay to run.

Everything it picks up goes into the pump basket and the filter, so it shortens the interval between filter cleans considerably.

It is the cheapest automatic cleaner category and the one with the highest ongoing maintenance burden.

What it does well

• No booster pump, no power outlet, no battery
• Cheapest automatic option to buy

What it costs you

• All debris passes through the pump basket and filter
• Reduces filtration flow while it runs
• No waterline cleaning

Skip it if your pool collects a lot of leaves. Sending those through the filter is a worse problem than the one you were solving.

Check price on Amazon

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What we could not verify

Coverage area per cycle and filtration micron ratings for the Polaris robots. Polaris publishes length ratings clearly and the other two figures either not at all or not on the listings we read. If micron rating is your buying criterion, that is a reason to look at a brand that prints it.