Do you have a pool at home or at your vacation house? Or maybe you are a professional looking for an affordable and easy solution for cleaning the pool at your accommodation? If the answer to any of the above questions is yes, purchasing a pool robot is one of the best investments you can make. It is a device that will make your life easier, as you can have your pool clean and refreshed in no time and with no effort at all.

Is it Worth Investing in a Pool Robot?

Before we get into technical details and see what you need to pay attention to when buying, let's answer the question "Why should I buy a pool robot?".

• Saving on water and chemicals: By cleaning the water internally, the pool filter is less burdened, so you do fewer "backwashes" (filter cleanings) and lose less water.
• Hygiene: Robots don't just collect visible debris, but also "brush" the walls, removing slime and bacteria before they have a chance to grow.
• Freedom of movement: Instead of spending 1-2 hours a week with the manual vacuum, you just press a button.

1. Pool Type & Surface

To begin with, you should know that not all robots are suitable for all surfaces. Depending on the material and shape of the pool, you will need to look for different features.

Material

The surface of the pool determines how easily the robot can "grip" to climb the walls. So, what you need to pay attention to here is choosing the ideal brushes, so the robot does not slip.

✨ Tile, mosaic, or polyester (fiberglass) pool?

These surfaces are very smooth. If even a thin film of slime develops, the robot slips and cannot cope. Here, you definitely need PVA brushes (also known as foam/sponge brushes). This material, when wet, softens and sticks to the tile like a suction cup. This way, the robot has perfect grip to climb vertically up to the waterline. Some models have combined brushes, meaning classic plastic with PVA rings, which also do an excellent job.

✨ Liner, painted concrete, or PVC pool?

These surfaces offer good friction on their own. Here, classic PVC brushes (those that look like plastic fins or stiff bristles) are the best choice. They are more durable over time and effectively "scrub" the surface, removing dirt without needing the extra grip of foam.

Shape & architecture

The era when robots simply went straight until they hit a wall and then turned randomly is over.

✨ Steps & Tanning Ledges: If your pool has built-in steps or shallow areas, cheaper robots tend to "get stuck" there or not clean them at all because they lose contact with the water and stop. You need a model with out-of-water sensors (so it can detect when it’s in shallow water and reverse) and enough flexibility to climb steps.

✨ Slopes & Bottom: If your pool has a shallow area that deepens abruptly, the robot needs powerful drive motors (usually those that move with tracks and not just wheels) to be able to climb the slope without slipping backwards.

✨ Navigation Software (Smart Mapping): For pools with irregular shapes (e.g. kidney-shaped, oval, or G-shaped), a simple robot will leave "dead zones" (areas it will never pass over). Modern robots are equipped with a gyroscope and navigation algorithms (such as CleverClean or AquaSmart). This means they "read" the pool's dimensions, map the area, and calculate the most efficient route to cover 100% of the surface in the shortest possible time.

✨ Obstacles (Main Drains & Ladders): Good robots are equipped with unblocking software. For example, if the robot "climbs" onto the main drain at the bottom and is left suspended, the software detects that it is not moving, momentarily shuts off the suction to release itself, and changes direction.

2. Cleaning coverage

This is perhaps the biggest "trap" that most people fall into, mainly in their effort to keep costs low. The level of coverage you choose essentially determines how much manual work you will be left to do yourself.

3. Filtration System

While in older or cheaper models, the filter is a fabric bag located at the bottom, the most modern robots have top access. The process is simple: you just press a button and remove a plastic basket, which you can rinse in 1 minute and easily and quickly snap back in place. So, prefer such a robot to make the process even cleaner, faster, and more effortless.

In terms of performance, you need to know that the unit of measurement for filtration is the micron. The smaller the number, the finer the dust it retains - for example, a 50-micron filter retains smaller particles than a 100-micron filter. Here’s when you should use each:

• Fine filters (coarser filters) usually look like nylon mesh screens and are ideal for spring, when you open the pool, or after a storm that has dropped a lot of leaves, twigs, and large insects. If you use a very fine filter in a pool full of leaves and mud, it will clog within 10 minutes, the robot will lose its suction and stop. The mesh allows water to pass through while collecting the larger debris.
• On the other hand, ultra-fine filters (finer filters) have pleats (like an accordion) and resemble car air filters. These are what make the water crystal clear and are suitable for daily maintenance during the months the pool is in use. They retain the pollen that yellows the water, the fine sand brought by the wind, and even dead cells or bacteria.

SkroutzTip: Look for robots with a dual filtration system, so that the water first passes through the filter that retains the large debris and then through the filter that retains the smaller particles for better results.

4. Wired or Rechargeable

While wired robots are more reliable for large pools, you should make sure the cable has a swivel mechanism to prevent tangling and mess.

On the other hand, wireless models operate on battery and are ideal for small pools or if you don't want cables all around. However, keep in mind the battery life and charging time.

5. Weight & ease of use

Finally, another factor you should consider when making a purchase is how easy it will be to lift and move the device after cleaning is completed. A robot that weighs 10kg, when it comes out full of water, can feel like 15kg. So, it’s a good idea to look for a robot with fast water drainage.

Don't forget! By taking into account the above individual characteristics and combining those that suit your needs, you can arrive at the ideal choice for you. Before deciding, you can also take a look at the reviews of other users, to see their opinions and experiences, which can help you reach a final decision much more easily.