What is the difference between a robotic, suction and pressure pool cleaner?

The power source and the debris destination. Hayward describes suction-side cleaners as using the water flow from your filtration system, attaching at a dedicated suction port or skimmer, with debris collected in the leaf canister, skimmer basket or routed to the pool filter. Polaris describes pressure-side cleaners as driven by water from the pool's system plus a required booster pump, collecting debris in an internal receptacle separately from the pool's filtration system. Hayward describes robotic cleaners as working separately from the existing filtration system, with their own motors, low voltage supply and on-board debris basket.

Does a pressure-side pool cleaner need a booster pump?

Usually. Polaris states that most pressure pool cleaners and pool vacuums require booster pumps to work effectively, and on its pressure-side listing today 11 of the 16 products are filtered as requiring a booster pump against 5 that are not. Polaris describes the booster pump as powering the cleaner through a dedicated water line connected to the pool filtration system, and as the component providing the force needed to move, climb and capture debris. Hayward's TracJet pressure cleaner is likewise published as running from the pool's pressure port with a booster pump.

Are robotic pool cleaners cheaper to run than pressure cleaners?

Hayward claims robotic cleaners use up to 94 percent less energy than pressure cleaners, but publishes no measurement basis for that figure on the page carrying it. The comparison is hard to verify because the robotic side publishes absolute power figures while the pressure side does not: the Polaris EPIC 8642 iQ manual publishes a 150 W maximum installed load and Wybot publishes 65 W for the C2 Vision and 90 W for the S2 Solar, while neither Polaris nor Hayward publishes a wattage for a booster pump on its category pages. Polaris publishes only a relative claim, that its PB4SQ uses 30 percent less energy than its own PB4-60.

Which type handles leaves best?

Polaris makes the strongest published claim, stating that pressure pool cleaners collect larger items like leaves, acorns and pebbles and are engineered with high-capacity intake areas to capture even the largest of debris. Hayward positions suction cleaners for small to medium debris including fine sand and dirt, and robotic cleaners for fine or ultra-fine debris. On the robotic side the relevant spec is on-board basket volume, which among the models we publish pages for runs from a 2 L chassis tray up to a 7 L top-load basket, with three models publishing no volume at all.

Can I run a robot pool cleaner while the pool pump is running?

Two of the robot makers we track say no, which is the opposite of how the other two categories work. Wybot's manuals for the C2, C2 Vision and S2 Solar list do not operate the cleaner while pool filter is running among the cautions that can damage the device, and Aiper's Seagull Pro manual instructs not to operate the cleaner and the pool filter simultaneously. A suction or pressure cleaner has the reverse requirement, since the pump is what drives it. Beatbot publishes no such prohibition for its models.

Robot pool cleaners buying guide

Robotic vs suction vs pressure pool cleaners: how the three systems differ

The three categories of automatic pool cleaner are not three price points of the same machine. They differ in where the motive power comes from, what has to be plumbed into the pool, and which filter ends up holding the debris, and those three differences drive everything else. Below is how Polaris and Hayward describe their own categories, in their own words, plus the published electrical figures for the robotic cleaners we track. We publish pages for robotic models only, and we have not tested any cleaner of any type.

Figures in this guide come from the manufacturer datasheets behind our model pages, verified 2026-08-06.

Where the power comes from

A suction-side cleaner has no motor of its own. Hayward's cleaner overview describes the mechanism directly: using the water flow from your filtration system, suction side cleaners attach to either a dedicated suction port or skimmer. Polaris says the same on its pool-cleaners overview, describing suction-side cleaners as powered by your pool's pump. The cleaner is a hydraulic device driven by the negative pressure your existing pump is already generating; turn the pump off and the cleaner stops.

A pressure-side cleaner also has no motor, but it is driven from the other end of the circuit and usually needs a second pump. Polaris describes pressure-side cleaners as attaching to your pool's circulation system, and states that most pressure pool cleaners and pool vacuums require booster pumps to work effectively, calling them an excellent option for pools with a dedicated pressure line. Its pressure-side product page spells out the drive path: water from your pool's system and the required booster pump drive the cleaner, creating continuous cleaning action, powering the wheels, and helping the cleaner move consistently across the pool. Polaris's booster-pump page confirms the plumbing requirement, describing booster pumps as powering pressure-side cleaners through a dedicated water line connected to your pool filtration system. On the Polaris pressure-side listing today, 11 of the 16 products are filtered as requiring a booster pump and 5 are not. Hayward describes its own pressure cleaner as powered by your pool's pressure port, and its TracJet listing states that it runs directly from the pool's pressure port with a booster pump.

A robotic cleaner carries its own motors and its own low-voltage electrical supply, and is plumbed into nothing. Hayward's description is the clearest statement of the category boundary: robotic pool cleaners work separately from your existing pool's filtration system, which it pairs with the observation that they are a sophisticated technology that may require a larger upfront investment. That independence is why every robot we publish a page for has a runtime or cycle figure of its own, and why two of the makers we track, Wybot and Aiper, publish instructions in their manuals not to run the robot and the pool filter at the same time. On a suction or pressure cleaner that instruction would be nonsensical, because the pump is the engine.

Suction-side: driven by the existing filter pump, connected at the skimmer or a dedicated suction port (Hayward, Polaris).
Pressure-side: driven by return-side water pressure, usually from a dedicated booster pump on its own line (Polaris, Hayward).
Robotic: self-contained drive and pump motors on a low-voltage supply, no plumbing connection (Hayward).

Where the debris ends up

This is the difference that shows up in your maintenance routine every week, and each maker states its own position plainly. Polaris describes suction-side cleaners as collecting debris in the pool filter rather than in self-contained debris bags or canisters. Hayward's version is slightly broader: as debris is being sucked up, it is collected in the leaf canister, skimmer basket, or routed directly to the pool filter. Either way, on a suction cleaner some or all of what the cleaner picks up is now loading the equipment that filters your whole pool.

Pressure-side cleaners are built specifically to avoid that. Polaris describes them as capturing debris before it reaches the filter, collecting it in an internal debris receptacle, and its pressure-side page repeats that debris is collected separately from your pool's filtration system. Hayward frames the same design as giving your pool's filtration system a break without going easy on debris, and describes the TracJet's debris bag as allowing easy dirt disposal without putting a strain on your filtration system.

Robotic cleaners hold everything on board, in a basket or canister the owner empties. That is why basket volume is a headline spec on this side of the market and does not exist as a concept on the other two. Among the models we publish pages for, published volumes run from a 2 L chassis tray on the Aiper Scuba SE to a 7 L top-load basket on the Aiper Seagull Pro, with the Polaris EPIC 8642 iQ at 4 L (about 1.1 gal) behind a transparent full-canister window. Three of the models we track publish no basket volume at all; we map the whole set in our guide to fall leaves and pool robot debris capacity.

What each category claims to pick up

The debris-size claims split along the same lines as the mechanism. Polaris states that pressure pool cleaners collect larger items like leaves, acorns and pebbles, and describes pressure-side cleaners as engineered with high-capacity intake areas to capture even the largest of debris. It adds that most pressure-side cleaners have a dedicated sweep hose that pushes debris out of corners, steps and tight spaces.

Hayward puts suction cleaners at the opposite end, stating that they handle small to medium size debris including fine sand and dirt, and that they are reliable, do not require professional installation, and are the most affordable pool cleaning option. For robotic cleaners it claims the fine end without the size ceiling, saying they handle fine or ultra-fine debris and offering interchangeable filter sets to swap between fine and ultra collection.

The published micron ratings on the robots we track are consistent with that framing, with an important caveat about which layer the number describes. Aiper publishes a 3 micron MicroMesh ultra-fine secondary layer behind a 180 micron basket on the Scuba S1 and Scuba S1 Pro. Wybot publishes 180 micron plus a 10 micron ultra-fine layer on the C2 Vision and 180 micron plus a 40 ppi sponge on the S2 Solar. Beatbot publishes 150 micron as the finest layer on the AquaSense 2, AquaSense 2 Pro and AquaSense 2 Ultra. Polaris publishes no micron rating for the EPIC 8642 iQ at all. In every case the headline number is the finest layer, not the whole filter, which our guide on pool robot filtration unpacks.

The energy claim, and what is actually published

Energy is where the marketing gets loudest and the published data gets thinnest. Hayward's robotic section claims that robotic cleaners use up to 94 percent less energy than pressure cleaners, and separately that they operate at low voltage and reduce the usage of water, chemicals and energy. Hayward states no measurement basis for the 94 percent figure on that page: no reference models, no pump size, no duty cycle. It is a manufacturer claim about the gap between two categories, and we are reporting it as one rather than treating it as a measurement.

Polaris's own energy claim on the booster-pump side is relative in the same way, but at least names its comparator. Its booster-pump page states that the PB4SQ's multi-stage design uses 30 percent less energy, footnoted as compared to the PB4-60, which is its own older booster pump. Neither the booster-pump category page nor the pressure-side page publishes an absolute wattage for either pump. So on the pressure side, the component that actually consumes the electricity has no published power figure on the pages we read.

On the robotic side, absolute figures do exist, on different bases. The Polaris EPIC series owner's manual (H0699900) publishes a control box supply of 100 to 125 VAC at 60 Hz, a supply voltage of 30 VDC to the cleaner, and an installed load of 150 W maximum. Wybot's manuals publish power as 65 W for the C2 Vision and 90 W for the S2 Solar. Aiper's Seagull Pro manual publishes motor power as 70 W, though Aiper's store page for the same model separately claims up to 196 W from its quad-motor system and its marketing page states 200 W, so even within one brand the figure depends on which page you read. Beatbot publishes no wattage for the AquaSense 2 line. None of these is comparable to a booster pump number, because no booster pump number is published.

Polaris EPIC 8642 iQ: 150 W maximum installed load, control box 100 to 125 VAC 60 Hz, 30 VDC to the cleaner (owner's manual H0699900).
Wybot S2 Solar: 90 W, charger output 29.4 V / 2.2 A, 5200 mAh battery (user manual).
Aiper Seagull Pro: 70 W motor power, 7800 mAh 25.2 V battery (user manual); the Aiper store page claims up to 196 W and the marketing page 200 W for the same model.
Wybot C2 Vision: 65 W, charger output 25.2 V / 1.5 A, 4600 mAh battery (user manual).
Beatbot AquaSense 2 line: no wattage published.
Booster pumps (Polaris PB4-60, PB4SQ): no absolute wattage published on the category pages; only a 30 percent relative claim for the PB4SQ against the PB4-60.

Installation, electrical safety and what stays in the pool

The three categories put the electricity in three different places, and the published safety instructions follow. Suction and pressure cleaners have no electrical connection at the cleaner itself; the current is all in the pump, which is why Hayward can say suction cleaners do not require professional installation and use the existing filtration system to operate. A pressure-side installation is the most involved of the three because it may need a dedicated pressure line and a booster pump, which is why Polaris tells buyers to check with a pool builder or service pro to confirm the pool is compatible.

Corded robots move the electrical requirement poolside. The Polaris EPIC owner's manual requires a GFCI-protected receptacle, prohibits extension cords, and states that per the US National Electrical Code the control box must be kept at least 5 ft from the edge of the pool, with the Canadian Electrical Code requiring a minimum of 3 m (10 ft). Cordless robots move it to charging time instead: Wybot's manuals instruct that the device be at least 3 m (about 10 ft) from the pool edge while charging and that the outlet be protected by both a GFCI and an earth leakage interrupter.

There is also a difference in what lives in the pool. Suction and pressure cleaners are typically left connected between cycles. Polaris publishes the opposite instruction for its robot, stating that the cleaner should not be left in the pool on a permanent basis and should be removed at the end of each cycle, and Hayward describes its suction range as simple to set up, drop in and retrieve. The other consequence of a self-contained machine is that its wear parts are yours to replace: the Polaris EPIC manual instructs replacing the brushes when the rubber is worn to the top of the wear indicator or every two years, whichever comes first, and the Polaris limited warranty document that covers its robotic cleaners for two years excludes wear items such as filter canisters, tires and tracks, brushes and rollers.

Where the record has gaps

Cross-category comparison is where the published record breaks down entirely, and it breaks down in a way that favours whoever is doing the comparing. There is no common measurement basis for cleaning performance across the three types: robots publish runtime, cycle time, flow rate in GPH and micron ratings, while suction and pressure cleaners publish none of those on the category pages we read, and a suction cleaner's throughput is a property of your pump rather than the cleaner. Nobody publishes a coverage figure on a comparable basis.

The energy comparison is the specific claim to be most careful with. Hayward's up-to-94-percent figure has no stated basis, and the pressure-side power draw it is implicitly comparing against is not published as a wattage by either Polaris or Hayward on their category pages. An honest reader can conclude that a robot with a published load of 65 to 150 W is drawing far less than a residential booster pump, but that is an inference from the physics of the two devices, not from two published numbers, and we are not going to dress it up as one.

On price we are staying qualitative deliberately. Hayward calls suction cleaners the most affordable pool cleaning option and says robotic cleaners may require a larger upfront investment; that ranking is the manufacturer's own and we are reporting it rather than pricing the categories ourselves. What a robot actually costs to own, on the figures its own maker publishes, is the subject of our guide on whether a robot pool cleaner is worth it. If you have already settled on the robotic side, how to choose a robot pool cleaner works through the specs that separate them, and cordless vs corded robot pool cleaners covers the split within the category.

Frequently asked questions

What is the difference between a robotic, suction and pressure pool cleaner?: The power source and the debris destination. Hayward describes suction-side cleaners as using the water flow from your filtration system, attaching at a dedicated suction port or skimmer, with debris collected in the leaf canister, skimmer basket or routed to the pool filter. Polaris describes pressure-side cleaners as driven by water from the pool's system plus a required booster pump, collecting debris in an internal receptacle separately from the pool's filtration system. Hayward describes robotic cleaners as working separately from the existing filtration system, with their own motors, low voltage supply and on-board debris basket.
Does a pressure-side pool cleaner need a booster pump?: Usually. Polaris states that most pressure pool cleaners and pool vacuums require booster pumps to work effectively, and on its pressure-side listing today 11 of the 16 products are filtered as requiring a booster pump against 5 that are not. Polaris describes the booster pump as powering the cleaner through a dedicated water line connected to the pool filtration system, and as the component providing the force needed to move, climb and capture debris. Hayward's TracJet pressure cleaner is likewise published as running from the pool's pressure port with a booster pump.
Are robotic pool cleaners cheaper to run than pressure cleaners?: Hayward claims robotic cleaners use up to 94 percent less energy than pressure cleaners, but publishes no measurement basis for that figure on the page carrying it. The comparison is hard to verify because the robotic side publishes absolute power figures while the pressure side does not: the Polaris EPIC 8642 iQ manual publishes a 150 W maximum installed load and Wybot publishes 65 W for the C2 Vision and 90 W for the S2 Solar, while neither Polaris nor Hayward publishes a wattage for a booster pump on its category pages. Polaris publishes only a relative claim, that its PB4SQ uses 30 percent less energy than its own PB4-60.
Which type handles leaves best?: Polaris makes the strongest published claim, stating that pressure pool cleaners collect larger items like leaves, acorns and pebbles and are engineered with high-capacity intake areas to capture even the largest of debris. Hayward positions suction cleaners for small to medium debris including fine sand and dirt, and robotic cleaners for fine or ultra-fine debris. On the robotic side the relevant spec is on-board basket volume, which among the models we publish pages for runs from a 2 L chassis tray up to a 7 L top-load basket, with three models publishing no volume at all.
Can I run a robot pool cleaner while the pool pump is running?: Two of the robot makers we track say no, which is the opposite of how the other two categories work. Wybot's manuals for the C2, C2 Vision and S2 Solar list do not operate the cleaner while pool filter is running among the cautions that can damage the device, and Aiper's Seagull Pro manual instructs not to operate the cleaner and the pool filter simultaneously. A suction or pressure cleaner has the reverse requirement, since the pump is what drives it. Beatbot publishes no such prohibition for its models.