# Robotic vs suction pool cleaner: which one to buy

Robotic vs suction pool cleaner comes down to upfront price against running cost and cleaning reach. Suction cleaners cost less to buy but run off your pool pump; robots cost more but run on their own low voltage motor and filter.

Updated Oct 15, 2026. HTML version: https://robotsforthat.com/guides/robotic-vs-suction-pool-cleaner/

## Short answer

Buy a robotic cleaner if you want walls and waterline scrubbed, fine debris caught in the robot's own filter, and the lowest power bill: a PG&E study cited by ENERGY STAR measured 197 kWh a year for a robot against 1,675 kWh for a cleaner driven by the filter pump. Buy a suction cleaner if your budget is under about $500 and you run your pump for hours anyway. The suction models we checked cost $479 to $786, while the robots we list cost $629.99 to $2,999 as of October 15, 2026.

| Feature | Robotic cleaner | Suction side cleaner |
|---|---|---|
| Power source | Own motor; corded low voltage supply or onboard battery | Your pool pump pulls water through it via the skimmer or a dedicated suction line |
| Pool pump must run? | No; it works independently of the filtration system | Yes; The Pool Factory says the pool filter must run for it to operate |
| Example prices (Oct 15, 2026) | $629.99 (WYBOT C2 Vision) to $2,999 (Dolphin Sigma) in our list | $479 (Hayward PoolCleaner 2x, Leslie's); $785.99 (Zodiac Baracuda MX8, sold out when checked) |
| Yearly energy (PG&E study via ENERGY STAR) | 197 kWh | 1,675 kWh for a cleaner powered by the filter pump |
| Where debris goes | The robot's own basket, bag or cartridge | Pump basket and pool filter, or an optional leaf canister |
| Fine filtering | Down to 10 µm on the WYBOT C2 Vision; ultra fine kits on Dolphins | Depends on your pool filter |
| Walls and waterline | Most robots in our list scrub floor, walls and waterline | Varies by model; the Hayward 2x lists walls and waterline, InyoPools says not all suction cleaners scrub walls |
| Hose or cable | Floating cable on corded models (none on cordless) | Segmented hose, 33 ft on the Hayward 2x and 36 ft on the MX8 |
| Warranty examples | 2 to 3 years in our list | 1 year limited on the Hayward 2x |

## How a suction cleaner works

A suction side cleaner has no motor of its own. It connects by hose to your skimmer or a dedicated suction port, and your pool pump pulls water and debris through it. InyoPools describes it as a moving drain. Hayward calls suction cleaners the most affordable type and notes they need no professional installation.

Because the pump does the work, the pump has to run whenever the cleaner runs. The Pool Factory says you need to run your pool filter for a suction cleaner to operate. Some models also have flow requirements: the Zodiac Baracuda MX8 listing says it needs 22 GPM and works with variable speed and 2 speed pumps.

Debris goes into your pump basket and filter unless you add a leaf canister. InyoPools recommends an extra leaf trap and says a dirty filter makes for a poor cleaner. Swim University warns that a suction cleaner can damage your filter if it picks up rocks or other large debris.

## How a robotic cleaner works

A robot carries its own drive motor and pump and collects debris in its own basket or bag. Hayward describes robots as self contained plug and play units that run separately from the filtration system at low voltage. Corded models plug into a GFCI outlet through a power supply at the pool edge; cordless models run on a battery and charge out of the water.

Most robots also navigate rather than wander. InyoPools says robots map the pool shape and calls them the only cleaner type that scrubs both walls and the tile line. In our list, nearly every robot cleans floor, walls and waterline; the Dolphin Cayman is an exception, since Maytronics lists no waterline scrubbing for it.

## Upfront cost

Suction cleaners cost less to buy. Leslie's listed the Hayward PoolCleaner 2x at $479 when we checked, and Royal Swimming Pools listed the Zodiac Baracuda MX8 at $785.99, though it showed as sold out.

Robots start higher. The cheapest robot in our ranking is the cordless WYBOT C2 Vision at $629.99, and the cheapest corded robot is the Dolphin Cayman at $1,129, as of October 15, 2026. At the top, the Dolphin Sigma costs $2,999. So the gap between a good suction cleaner and an entry robot can be small, while a premium corded robot costs several times more.

## Energy and running cost

This is the biggest difference. ENERGY STAR's pool pump page cites a PG&E study that measured a robotic cleaner at 197 kWh a year, a cleaner powered by the filter pump at 1,675 kWh a year, and a cleaner powered by a booster pump at 2,989 kWh a year. Suction cleaners fall in the filter pump group.

Hayward says its robots use up to 94% less energy than most pressure cleaners and about as much as a standard light bulb. Aiper says a robot draws around 150 to 200 watts. Bob Vila estimated about 5 cents an hour to run the corded Dolphin Premier, or under $20 a year at three cycles a week.

There is a catch: you may run the pump anyway for filtration. ENERGY STAR says a pool pump can cost as much as $310 a year in energy and that an ENERGY STAR variable speed pump can save about $50 a year on an in-ground pool. If your pump already runs long hours, a suction cleaner adds less than the study figure suggests. If you want to shorten pump hours, a robot lets you do that because it does not need the pump.

## Filtering and cleaning results

A robot traps debris before it reaches your filter. Hayward says its eVac robot reduces filter backwashing and water use for this reason. Robot filters vary a lot: many cordless robots ship with 150 µm baskets, while the WYBOT C2 Vision pairs a 180 µm cartridge with a 10 µm ultra fine filter and Dolphins include fine or ultra fine options. The Smart Home Hookup found 150 micron baskets will not trap algae or fine silt.

InyoPools says suction cleaners remove smaller particles well but send them into the filter and pump basket. Aiper, which makes robots, says suction coverage is a matter of hours and luck. Leslie's lists the Hayward 2x for floor, walls, steps and waterline, climbing about 2 to 3 feet up the wall before turning back, and recommends it for lighter colored pools no deeper than 5 feet.

## Who should buy a suction cleaner

A suction cleaner makes sense if you have a small budget, an in-ground pool with a working skimmer or suction port, and a pump you already run for many hours a day. It is also simpler: no battery to charge and no robot to lift out after every run.

Check your pump first if it is a variable speed model run on low settings, since some suction cleaners need a minimum flow; the MX8 listing says 22 GPM. Skip suction if your pool gets fine sand and silt that you want kept out of the main filter, or if you want to cut pump hours.

## Who should buy a robot

Buy a robot if you want walls and waterline scrubbed, lower energy use, and debris kept out of your main filter. A corded robot on a weekly timer, like the Dolphin Cayman or Dolphin Premier, gives the most hands off routine. A cordless robot such as the WYBOT C2 Vision or Beatbot AquaSense 2 avoids the cable but needs charging and lifting after each run.

Our full ranking of robotic pool cleaners scores each one on published test results and value, and the buying guide explains how to match a robot to your pool size and type.

## Questions people ask

### Is a robotic pool cleaner better than a suction cleaner?

For most cleaning jobs, yes: robots scrub walls and waterline, carry their own filter and used far less energy in the PG&E study cited by ENERGY STAR (197 vs 1,675 kWh a year). Suction cleaners win on purchase price.

### Does a suction pool cleaner need the pump running?

Yes. It is powered by the suction from your pool pump, so the pump and filter must run while it cleans. A robot works independently of the pump.

### How much does a suction pool cleaner cost?

As of October 15, 2026, Leslie's listed the Hayward PoolCleaner 2x at $479 and Royal Swimming Pools listed the Zodiac Baracuda MX8 at $785.99 (sold out when checked).

### How much electricity does a robotic pool cleaner use?

A PG&E study cited by ENERGY STAR measured 197 kWh a year. Aiper says robots draw about 150 to 200 watts, and Bob Vila estimated about 5 cents an hour for the Dolphin Premier.

### Can a suction cleaner damage my pool filter?

Swim University warns it can if it picks up rocks or other large debris, since everything it collects goes toward the pump basket and filter. InyoPools suggests adding a leaf trap.

## Sources

1. [ENERGY STAR: Pool pumps](https://www.energystar.gov/node/10446)
2. [Hayward: Better cleaners](https://ca.hayward.com/why-hayward/explore-products/better-cleaners)
3. [InyoPools: Which type of automatic cleaner should I use?](https://diy.inyopools.com/article/which-type-of-automatic-cleaner-should-i-use/)
4. [Swim University: Pool cleaner types](https://www.swimuniversity.com/?p=5792)
5. [The Pool Factory: Robotic vs suction side cleaners](https://support.thepoolfactory.com/hc/en-us/articles/204161125-What-is-the-difference-between-robotic-cleaners-and-suction-side-pool-cleaners)
6. [Aiper: Robotic, suction and pressure pool cleaners](https://aiper.com/blogs/suction-pool-cleaner-vs-robotic/)
7. [Leslie's: Hayward PoolCleaner 2x suction cleaner](https://lesliespool.com/the-hayward-w3pvs20jst-the-poolcleaner-2x-suction-side-pool-cleaner-2wd/340059.html)
8. [Royal Swimming Pools: Zodiac Baracuda MX8](https://www.royalswimmingpools.com/baracuda-mx8-inground-pool-cleaner.html)
9. [Bob Vila: Dolphin Premier review](https://www.bobvila.com/articles/dolphin-premier-robotic-pool-cleaner-review.md)