Quick answer: The right robotic pool cleaner depends on your pool size, surface type, and the debris you deal with most. Pools under trees need a canister-style cleaner with a large basket; pools with fine dust or sand need ultra-fine bag filtration. For larger pools, a corded wall-climbing robotic cleaner is usually the most reliable long-term option. Cordless models suit smaller pools and lighter debris loads.
Here's what to look for before buying.
Start With Your Pool Environment
This is the first thing you should think about before comparing features or price.
If your pool sits under trees and constantly fills with leaves, bark, gum nuts or twigs, you'll want a robotic pool cleaner with a larger canister system that's quick and easy to empty.
If your biggest issue is fine dust, dirt or sandy sediment settling on the floor, look for a robotic pool cleaner with ultra-fine filtration.
Your pool surface matters too. Concrete and tiled pools often need stronger scrubbing power to help manage calcium build-up and algae, while fibreglass pools are generally a little less demanding.
Bag vs Canister Robotic Pool Cleaners
Robotic pool cleaners use either a bag or canister filtration system, and each suits different pool environments.
| Feature | Bag Style | Canister Style |
|---|---|---|
| Ideal For | Fine dust, dirt, pollen and sandy sediment | Leaves, gum nuts, twigs, palm fronds and heavier debris |
| Best Pool Environment | Pools affected by dust or sandy sediment | Pools surrounded by trees or exposed to storms |
| Filtration | Ultra-fine, some systems filter down to ~2 microns | Designed to collect larger debris efficiently |
| Maintenance | Takes a little longer to empty and clean | Easy to remove, hose out and re-install |
| Good Choice If... | Your biggest issue is fine debris settling on the pool floor | Your pool regularly collects leaves and larger debris |
Cordless vs Corded Robotic Pool Cleaners
Cordless robotic pool cleaners have become popular over the last few years, especially for plunge pools and smaller backyard pools. The biggest advantage is convenience — no cords to manage and easy to drop in for a quick clean.
They're a great option for:
- Smaller pools
- Lighter debris loads
- Quick cleaning cycles
- Pool owners wanting a simpler setup
Maytronics Dolphin Active X6 Robotic Pool Cleaner
However, battery runtime becomes important in larger pools, and some cordless models may need multiple cleaning cycles to finish the job properly. For larger pools or pools with heavier leaf load, a quality corded robotic pool cleaner is often still the more reliable long-term option.
Do You Need a Wall-Climbing Robotic Pool Cleaner?
Floor-only robotic pool cleaners can work well in smaller pools, but walls, waterlines and steps are where grime, algae and calcium deposits usually start building up.
A robotic cleaner that climbs walls and scrubs waterlines will generally keep your pool looking cleaner between services and reduce how often you need to manually brush. Most modern robotic pool cleaners can clean:
- Floors
- Walls
- Waterlines
- Steps and ledges
If you have a concrete or tiled pool, wall-climbing capability becomes even more important as these surfaces often need more scrubbing power over time. Regular cleaning also helps prevent algae and debris build-up — if your pool water has already started turning cloudy or green, check out our guide on why pools turn green and how to fix it.
BWT COSMY Star Robotic Pool Cleaner
The key is choosing a robotic pool cleaner that suits your pool size, surface and the type of debris you deal with most often.
Frequently Asked Questions
Are robotic pool cleaners worth it?
For most pool owners, yes. A quality robotic pool cleaner saves hours of manual cleaning and helps improve water clarity by removing debris before it breaks down in the pool. They're especially useful for pools surrounded by trees or exposed to regular dust and debris, and they run independently of your filtration system so they don't add load to your pump.
How often should you run a robotic pool cleaner?
Most pools only need a robotic pool cleaner running once or twice a week. If your pool regularly fills with leaves or gets plenty of use, run it more often during summer or after storms. Many modern robotic cleaners have scheduling features so you can automate this.
What's the best robotic pool cleaner for a concrete pool?
Concrete pools usually benefit from robotic pool cleaners with strong wall-climbing capability and active scrubbing brushes. Because concrete surfaces are rougher than fibreglass, they often require a cleaner with more cleaning power to help manage algae and calcium build-up over time.
Should I get a cordless or corded robotic pool cleaner?
Cordless robotic pool cleaners are convenient and great for smaller pools with lighter debris loads — no cords to manage and easy to drop in for a quick clean. For larger pools or pools with heavy leaf loads, a corded model is usually more reliable as battery runtime can be a limiting factor over a full cleaning cycle.
What's the difference between a bag and canister robotic pool cleaner?
Bag-style robotic pool cleaners use fine mesh or fabric filtration and are best for pools with fine dust, dirt, pollen or sandy sediment — some filter down to around 2 microns. Canister-style cleaners have a larger collection basket that's easy to remove and hose out, making them better suited to pools that collect leaves, gum nuts, twigs and heavier debris.