Which are the best pool robots? An expert analysis to help you decide

Pool robots are a real boon for pool owners – we spoke with suppliers and experts who themselves rigorously tested 22 models in their own pools. We found that the trend is clearly towards high-priced devices that systematically clean the pool and effectively clean the floor, walls, and waterline.

But does it always have to be the most expensive model? Our expert analysis shows: With the right knowledge, you can save up to €400 without compromising on cleaning performance.

battery-powered pool robots are particularly popular , offering up to 150 minutes of independent operation after a charging time of approximately 90 minutes. Compared to corded models, they offer greater flexibility, albeit at a higher price. The price range extends from affordable entry-level models between €200 and €500 to premium pool robots starting at €1,000. Top-of-the-line models such as the Zodiac CNX-Li 52 iQ (approx. €1,149) and the Dolphin Liberty 200 (approx. €889) currently lead the rankings.

But which device is really worth it for whom? And which features are actually worth your money?

What makes a good pool robot?

Several factors determine whether a pool robot will truly impress when purchasing one. The right choice depends on individual requirements and the specific characteristics of the home swimming pool.

• Top models are characterized by efficiency and user-friendliness.
• Popular robots impress with their durability and reliable results.
• The choice depends on pool size and individual requirements.
• Optimal devices adapt perfectly to pool characteristics.
• Personal consultation helps you find the right pool robot.

Cleaning areas: floor, walls, waterline

A high-quality pool robot cleans not only the pool floor, but also the walls and waterline. This triple cleaning process ensures that the pool remains spotless all around. Many models offer different cleaning modes, such as "Quick" for a quick floor cleaning in about 1.5 hours or "Smart" for a comprehensive cleaning of the floor, walls, and waterline in about 2.5 hours. Consistent adhesion to the walls is particularly important – it determines whether a device merely cleans properly or truly thoroughly.

the walls places higher demands on the technology. While almost all pool robots can effectively clean the floor, wall cleaners require a powerful motor and special brushes. Complete wall cleaning is usually not possible with inflatable pools (quick-up pools).

Filter performance and particle size

The filter unit is one of the most important, yet often underestimated, aspects of a pool robot. There are three main types of filtration: filter bags made of fine microfiber fleece, cartridge filters made of paper or textile cartridges, and filter baskets made of multi-layered plastic.

The crucial factor is the filter fineness , measured in micrometers (μm). Top models achieve filter finenesses between 5 and 10 μm, reliably capturing even fine dust and airborne particles. For comparison: The Wybot C2 offers a dual filtration system with a 180 μm coarse filter plus a 10 μm HEPA filter, while the Zodiac Alpha OA 6400 iQ uses a 100 μm filter basket.

Filter capacity also plays an important role. A small filter basket with a capacity of around 3 liters will quickly clog up in a pool with trees or heavy pollen, reducing suction power. Ideally, a pool robot combines a large filter basket with a fine filter medium for consistently clear results.

Navigation: Random or systematic

Modern pool robots differ fundamentally in their navigation methods. Older or less expensive models navigate randomly, while more advanced devices proceed systematically. Intelligent navigation with sensors, such as the Sensor Nav System™ of the Zodiac Alpha OA 6400 iQ , analyzes the pool structure and optimizes its movement patterns.

Aiper models utilize innovative WavePath navigation technology , which employs a fixed movement pattern instead of the traditional random pattern, significantly increasing cleaning efficiency. State-of-the-art navigation systems, like those in the Wybot C2, combine a gyroscope, orientation sensors, and other precision sensors to continuously monitor the pool environment.

Battery life and charging time

For wireless models, battery life and charging time are crucial factors. Run times range from 60 minutes for the Steinbach Poolrunner Basic 2.0 to an impressive 180 minutes for the Wybot C2 . Charging times also vary considerably – while some models require 5-6 hours, others are ready to use again after just 3 hours.

Battery capacity is measured in milliampere-hours (mAh) and ranges from 5,000 mAh to 7,800 mAh in premium models. Advanced devices feature different operating modes that optimize energy consumption and extend battery life.

Compatibility with pool types, shapes and surfaces

Different pool types place specific demands on pool robots, which must be considered when making a selection. The shape and size of the pool significantly influence the efficiency of the cleaning device.

Rectangular pools require systematic lane cleaning, while freeform pools need intelligent navigation to cover all areas. Large pools benefit from powerful models with large filter baskets that ensure high dirt collection. The brush type should also be matched to the pool's surface material to enable optimal cleaning without damage.

The ideal pool robot must be perfectly matched to the pool's characteristics. Precise matching ensures not only effective cleaning but also the longevity of both the device and the pool. An incorrect choice can lead to insufficient cleaning or premature wear.

A high-performance pool robot should be able to adapt to different pool shapes and surfaces. While most models work without problems in rectangular, round, and oval pools, freeform pools can pose a challenge.

The surface texture also plays a crucial role. Almost all pool robots work perfectly on foil and fiberglass pools. However, cleaners with lamellar brushes often struggle with tiled pools, which have a very smooth surface – a model with a continuous PVA roller is recommended here.

Choosing the right brushes determines not only the robot's grip but also its effectiveness in removing deposits and the material's durability. For polyester or tiled pools, hard PVC brushes or highly adhesive foam rollers are best suited.

Currently most popular and expert-preferred models (2025)

Recent tests and comparisons have revealed a few favorites:

• The all-rounder (premium class) : Maytronics Dolphin E40i / E50i . These corded classics are extremely reliable, offer excellent app control, and clean floors, walls, and the waterline.
• The high-tech battery winner : Beatbot AquaSense Pro . A premium model that not only vacuums, but also clarifies the water surface and navigates using ultrasonic sensors.
• The price-performance tip : Dolphin E20 / E25 . Compact, lightweight and ideal for standard pools up to 10 meters in length (usually only cleans the bottom or bottom and wall area).
• The battery specialist : Aiper Scuba S1 Pro . Popular for its strong suction power and ability to intelligently navigate around obstacles, all without tangled cables.

Pool type	Recommendation	Why?
Above-ground pools (Intex/Bestway)	Steinbach Poolrunner or Dolphin E10	Lightweight cleaning pads that efficiently clean the floor without putting stress on the film.
Tile & glass mosaic pools	Zodiac CNX series or robots with miracle brushes	Smooth surfaces require special brushes (Canebo/Wonder Brushes) to prevent slipping.
Large pools (> 12m)	Zodiac Alpha iQ or Dolphin E60i	These models have a higher pump output and larger filter baskets for handling a lot of dirt.
Saltwater pools	Almost all modern brand-name devices	The only important thing here is to rinse thoroughly with fresh water after cleaning.

Battery or cable? Advantages and disadvantages compared

The decision between battery-powered and corded pool robots is one of the most fundamental questions when buying a pool cleaner. Both technologies have their strengths and weaknesses, which vary in importance depending on individual requirements.

Freedom of movement vs. continuous operation

Battery-powered pool robots offer maximum freedom of movement within the pool. Without a bothersome cable, they move freely around the pool, which is particularly advantageous for complex shapes or pools with integrated steps. They create no tripping hazards and eliminate the need for tangled cables.

Corded models, on the other hand, offer the advantage of unlimited runtime. Since they are permanently powered, they can operate for extended periods – ideal for large or heavily used pools. The constant power supply also ensures consistently high suction power.

In contrast, battery-powered models have a limited operating time, ranging from 60 to 180 minutes depending on the model. Premium devices now offer a runtime of up to 210 minutes, which is sufficient for most medium-sized pools.

Maintenance and wear

For wireless models, battery maintenance is paramount. Regularly check the casing for cracks or corrosion, as damaged casings can expose lithium-ion batteries to water and cause short circuits.

Wired pool robots, on the other hand, require special attention to cable maintenance to prevent tangling. Here, you should ensure the cable is intact and wind it up properly after each use.

For both versions, it is advisable to replace the caterpillar tracks approximately every two years to ensure optimal cleaning performance. Similarly, the filters should be checked regularly and replaced if worn or cracked – generally, a filter change every two years is recommended.

Use in large vs. small pools

For pools up to 8–10 m in length, a battery-powered pool robot is usually perfectly adequate. It offers sufficient mobility with low power consumption. However, with larger pools, the limited battery life can become a problem if the robot cannot complete the cleaning cycle in one go.

Corded pool robots are particularly suitable for large pools of 150 m² or more, or pools with heavy soiling. Their continuous power supply ensures consistent performance even during extended cleaning cycles. However, you must ensure that the cable is long enough and does not become tangled.

Tests have shown that cordless models often experience reduced suction power during the cleaning cycle due to their smaller motors. Therefore, for deep pools or those with a slope, models with higher battery capacity or more powerful motors should be considered.

Charging times and energy consumption

The batteries require between 2 and 5 hours to charge. Those who want to clean their pool spontaneously may have to wait. In comparison, corded models are ready for immediate use, but require a power outlet near the pool.

Battery-powered models have a clear advantage when it comes to energy consumption: On average, they use 80-95% less energy than traditional corded robots or handheld pool cleaners with a pump. While corded robots consume approximately 120-180 watts and use 0.25-0.45 kWh per cycle (approx. €0.10-0.18 per cycle), battery-powered pool robots use only 30-60 watts for charging and 0.04-0.20 kWh per cycle (approx. €0.02-0.08 per cycle).

A battery-powered pool robot can therefore save approximately €20-60 per year in electricity costs compared to a traditional corded robot. The most efficient models in 2025 can clean over 100 m² of pool area with only 0.08 kWh of electricity – that's less than 3 cents per cleaning cycle.

Important buying criteria for your pool robot

Choosing the right pool robot depends primarily on your individual requirements. The decisive factor is not necessarily the price, but rather its compatibility with the specific characteristics of your swimming pool.

Pool size and shape

When choosing a pool robot, the pool size is the primary selection criterion. While some models are specifically designed for shallow pools with a maximum area of ​​20 square meters, others are suitable for pools up to 300 square meters. For corded models, ensure the cable length is sufficient – ​​16 meters, for example, allows for cleaning pools up to 10 x 5 meters.

The pool shape also plays a crucial role. Round and rectangular pools can generally be cleaned automatically without any problems, while for freeform pools, a pool robot with remote control or app operation is recommended. For complex pool shapes with steps or irregular contours, you will need a model with intelligent navigation and sufficient motor power.

Type of pollution

Depending on the type and frequency of debris in your pool, the robot should meet different requirements. For leaves, foliage, or insects, you need a robot with a wide suction opening and a large filter basket. For finer debris such as dust or algae, however, a model with a finer filter system and more powerful brushes is advantageous.

Note also that some models offer additional modes for tougher dirt, such as a spring or turbo mode for more intensive cleaning. Suction power varies considerably – from 6,000 l/h to an impressive 14 m³/h.

Filter type and cleaning modes

There are three main types of filters: microfiber fleece filter bags for the smallest particles, cartridge filters made of paper or textile, and multi-layered plastic filter baskets with easy access. Filter fineness is measured in micrometers (μm) – the Wybot S2, for example, offers a standard 180-μm filter basket with an additional filter.

Modern pool robots feature various cleaning modes. The Wybot E-TRON i20 NG, for example, offers four modes: full cleaning, floor only, walls only, and walls and floor. Furthermore, advanced models allow for individual cycle settings such as 1 x 200 minutes, 2 x 100 minutes, or 4 x 50 minutes.

App control and timer function

Controlling the robot via app or remote control significantly increases ease of use. Many modern pool robots can be controlled via smartphone or tablet, allowing you to adjust cleaning cycles, set timers, and receive firmware updates. A particularly useful feature: some models offer a delayed start, giving stirred-up dirt particles time to settle.

The app control also offers a variety of programming options, such as weekly timer functions, allowing the pool robot to start automatically up to four times a week. Furthermore, some models allow you to manually direct the robot to the dirt, enabling you to tackle stubborn stains more effectively.

Vivapool offers a range of pool robot models with app control and timer function to meet different needs.

Accessories such as caddy or remote control

A transport caddy makes handling easier and ensures safe storage of the pool robot. These wheeled stands not only allow for effortless transport but also offer space for the power supply and cables. Some models also feature integrated remote control holders.

Remote controls allow for precise operation – especially useful for freeform pools or in areas with localized soiling. High-end models like the Dolphin S300i even offer full app control with manual operation, various programs, and a weekly timer.

This way you can save up to €400 on your purchase

The price shock of high-end pool robots deters many buyers. However, with the right strategies, you can save considerably without sacrificing important features.

Price-performance winner instead of high-end model

Pool robots range in price from under €400 to over €1,500. However, the most expensive models don't always offer the greatest practical benefit for your specific pool. Price-performance winners like the Dolphin E10 (€670), the Dreame Z1 Pro (from €1,099), or the Wybot C2 Vision (from €657) offer almost the same features as premium devices. By choosing a mid-range model (approx. €500-€1,000), you get reliable navigation and strong performance, while saving up to €400 compared to top-of-the-line models.

What you should pay attention to when looking at offers

When considering seemingly good deals, be wary of limitations in functionality or lifespan. Make sure to look for a warranty of at least two years and good customer support, ideally in Germany or the EU. Also, avoid devices that require you to turn the robot upside down or disassemble it to empty the filter. A cheap model may seem attractive at first, but will end up being more expensive in the long run due to the need for a replacement sooner rather than later.

When is a used pool robot a worthwhile investment?

Used pool robots offer an affordable way to invest in quality. Prices range from under €20 for older models to around €1,000 for professional-grade robots. Particularly attractive are B-stock, tested demonstration models, or returned items with a warranty. When buying, pay attention to the technical condition, any remaining warranties, and included accessories. Furthermore, purchasing used models is an environmentally friendly choice due to their extended lifespan and reduced resource consumption.

Which functions are truly necessary?

Not every feature justifies the extra cost. For small, round pools, a simple model without app connectivity is usually sufficient. If you only want to clean the bottom of a small pool, an inexpensive entry-level model will do. However, for complex pool shapes or heavy soiling, features like systematic navigation and spot cleaning are worthwhile. Therefore, ask yourself: Do you really need wall cleaning, or is floor cleaning enough? Is a corded model sufficient, or does it have to be cordless? A realistic needs analysis will prevent costly mistakes and unnecessary expenses.

Care, maintenance and lifespan

Regular maintenance of a pool robot is crucial for its performance and lifespan. With proper care, you can not only maintain cleaning efficiency but also significantly extend its service life.

Filter cleaning after each use

Experts strongly recommend thoroughly cleaning the pool robot's filter after each use. This prevents deposits from building up and sticking to the filter. For heavily soiled pools, more frequent cleaning is advisable. Rinse the filter basket, cartridge filter, or filter bag with tap water or rainwater to prevent chlorine or salt water from damaging the device. This is especially important for saltwater pools, as certain chemicals can corrode the plastic parts.

Storage in winter

During the winter months, your pool robot should always be stored in a dry, frost-free, and clean place. The ideal storage location is a heated basement, utility room, or garage that doesn't get cold. Before storing it, we recommend thoroughly cleaning all components

1. Rinse filter parts and let them dry
2. Wipe the casing and clean internal parts such as the impeller wheel
3. Ensure that all parts are completely dry

After the winter break, a short functional test should be carried out to determine whether all components are working properly.

Replacement of wear parts

Regular inspection and timely replacement of wear parts are essential for the functionality of your pool robot. Filters should be changed approximately every two years, especially if they are too worn or have cracks. The motor propeller should also be checked regularly, as a blocked propeller can cause malfunctions and overload the motor.

Furthermore, the cleaning brushes require special attention – replacing them in a timely manner ensures optimal cleaning results. The frequency of replacement depends on the intensity of use, the level of soiling, and the quality of the brushes.

How long does a good pool robot last?

The lifespan of a pool robot varies depending on the model, usage intensity, and maintenance. With proper care, a pool robot can last up to 10 years. The average lifespan is around 7 years, although some sources cite 5 to 7 years.

Interestingly, brand and quality also play an important role – Dolphin pool robots often last longer due to their superior quality and come with a 2- to 3-year warranty. Balanced pool chemistry also contributes to longevity, as a pool with the correct amount of chemicals puts less strain on the robot.

Ultimately, paying a little attention to maintenance is a worthwhile investment – ​​it saves time and money in the long run and ensures that your pool robot reliably provides crystal-clear water.

Which pool robot is right for you?

The world of pool robots has evolved considerably since 2025. Our comprehensive tests clearly show that choosing the right pool robot depends largely on individual needs. Although the trend is towards high-quality devices with systematic cleaning, you don't necessarily have to choose the most expensive model to achieve excellent results.

Several factors should be carefully considered when choosing a pool robot to make the best decision for your specific needs. A thorough analysis of these criteria will lead to the right device.

• The pool size determines the necessary cleaning range and battery life.
• The degree of contamination affects the required filter capacity and suction power.
• The budget determines the model class and the range of functions.
• Desired features, such as app control or timer, increase comfort.
• Maintenance costs affect long-term expenses and the time required for upkeep.
• Energy consumption directly impacts the robot's operating costs.

In fact, with the knowledge presented in this article, you can save up to €400 and still purchase a high-performance pool robot. The decision between battery-powered and corded models should be carefully considered – while cordless devices offer more flexibility, corded robots score points with continuous operation and consistent performance.

It is particularly important to consider your specific pool conditions. Pool size, shape, level of soiling, and desired cleaning areas are key factors in determining which model is best for you. As a general rule: an expensive robot with numerous functions offers little benefit if these functions are unnecessary for your pool.

In addition, regular maintenance plays a crucial role in the lifespan of your pool robot. With careful filter cleaning after each use, proper winter storage, and timely replacement of wear parts, your device can operate reliably for up to 10 years.

Ultimately, it's not the highest price that leads to the best result, but rather a well-considered selection. Therefore, take your time to carefully analyze your needs before making a decision. With the presented price-performance winners and our expert knowledge, nothing stands in the way of a clean pool season in 2025 – and your wallet will thank you.

Vivapool offers expert advice to help you choose the right pool robot and clarify all your individual requirements. Personalized consultation ensures that the robot is perfectly suited to your needs. This support helps you avoid making the wrong purchase and find a long-term, satisfactory solution.