Robotic vs suction vs pressure pool cleaners
Almost every automatic pool cleaner sold in Australia is one of three types, and they work in genuinely different ways. Buying the wrong category is a more expensive mistake than buying the wrong model within a category, so it is worth five minutes.
The short version
| Type | How it is powered | Typical AU price | Best at | Weakness |
|---|---|---|---|---|
| Roboticmains or battery | Its own low-voltage motor, independent of your pump | $700 to $3,500 | Floor, walls and waterline. Filters fine debris. Lowest running cost | Highest purchase price. Electronics can fail out of warranty |
| Suctionhose to skimmer | Your filtration pump's suction | $150 to $900 | Fine silt and everyday dust on a budget | Adds pump hours. Blocks on leaves and bark. Hose across the pool |
| Pressureoften needs a booster | Return-line pressure, sometimes a dedicated booster pump | $400 to $1,600 | Large debris, leaves and gumnuts, in its own bag | Booster pump uses more power again. Poor on fine silt |
Robotic cleaners
A robotic cleaner is a self-contained machine. It has its own motor, its own filter and, on most modern units, its own navigation logic, so it does not touch your filtration system at all. You drop it in, it works through a cycle, you lift it out and rinse the basket.
That independence is the whole argument for them. Because it is not stealing suction from your pump, you are not running the pump for extra hours to get the pool clean, and pool pumps are one of the biggest electricity loads in an Australian house. The better robots also climb walls and scrub the waterline, which is where the greasy tide-mark forms, and neither of the other types does that well.
The trade-off is money and complexity. You are paying for motors, a battery or a floating cable, and a control board, and when one of those fails outside warranty the repair economics are grim unless the brand has a service presence in Australia.
Suction cleaners
A suction cleaner is the familiar shape most Australians grew up with: a head on the end of a long hose plugged into the skimmer box or a dedicated suction point. It has no motor of its own. Your pump provides the pull, the cleaner wanders semi-randomly, and everything it picks up ends up in your pump basket and filter.
They are cheap, mechanically simple and genuinely good at fine silt. The catch is the pump. To get a full clean you typically run the filtration longer than you otherwise would, so the cheap purchase price is partly paid back in electricity. And in a yard with gum trees, larger leaves and strips of bark will block the throat regularly.
Pressure cleaners
A pressure cleaner works the opposite way. Instead of sucking debris toward your filter, it uses water pushed out of the return line to drive itself around and lift debris into its own collection bag. Many need a separate booster pump to get enough pressure.
Because debris goes into a bag rather than through your filtration system, they handle leaves and gumnuts far better than a suction cleaner, and they spare your pump basket. But the booster pump is another motor drawing power, and they are noticeably worse than the other two at fine silt and dust.
How to choose
- Heavy leaf litter, gum trees overhead: a pressure cleaner with a large bag, or a robot with a high-capacity basket. Avoid a plain suction cleaner, you will spend your weekends unblocking it.
- Fine dust, not much organic debris: a suction cleaner is genuinely adequate and much cheaper, provided you are comfortable with the extra pump time.
- You want the waterline and walls done: robotic, and specifically a model rated for waterline scrubbing. Nothing else does this properly.
- You want the lowest ongoing cost and least handling: robotic, and check the published power draw before you buy.
- Above-ground or soft-sided pool: a smaller robot or a basic suction unit. Many full-size robots are too heavy and are not rated for the wall construction.
One question worth asking before any purchase: who repairs this in Australia, and are parts available here? On a machine over a thousand dollars this matters more than most spec-sheet differences, and it is the thing least likely to be on the product page.
Common questions
Which type of pool cleaner is cheapest to run?
A robotic cleaner, in most cases. It runs on its own low-voltage motor rather than driving off your filtration pump, so it does not force the pump to run longer. Suction and pressure cleaners are cheaper to buy but they add pump hours, and the pump is one of the largest electricity loads in a house with a pool.
Do I still need a pool pump if I buy a robot?
Yes. A robot cleans the surfaces and captures debris in its own filter basket, but your filtration and sanitation system still has to circulate and treat the water. A robot replaces the vacuuming job, not the pump.
Will a suction cleaner damage my pool?
Not usually, but suction cleaners drag a hose across the surfaces and can scuff soft vinyl liners over years of use. They also block on larger debris such as gum leaves and eucalyptus bark, which is a common frustration in Australian backyards.
Are cheap robotic cleaners worth it?
It depends entirely on whether anyone in Australia will repair one. A cheap unit with no local service presence is effectively disposable, so compare the purchase price against the likely lifespan rather than against a serviceable machine.