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🏊♂️ Dive into effortless pool perfection with Hydro 4 – your smart, cordless cleaning companion!
The Chasing Hydro 4 is a cutting-edge cordless robotic pool vacuum designed for inground pools, featuring a powerful 5070 GPH dual turbine suction system, a 210-minute battery runtime with quick 4-hour charging, and smart app control for remote operation. It offers over 95% pool coverage with multi-mode cleaning options and a large 4.1L dual-chamber filter basket, ensuring thorough removal of debris from floors, walls, and waterlines. Lightweight and easy to handle, it comes with a 3-year warranty and US-based support, making it the ultimate pool cleaning solution for busy professionals.



















| ASIN | B0DDSYRZVY |
| Battery Description | Lithium-Ion |
| Battery Weight | 1432 Grams |
| Best Sellers Rank | #47,996 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #96 in Robotic Pool Cleaners |
| Brand Name | Chasing |
| Capacity | 4.1 Liters |
| Charging Time | 4 Hours |
| Color | Dark Grey |
| Control Method | App |
| Customer Reviews | 3.8 3.8 out of 5 stars (137) |
| Efficiency | High efficiency |
| Hose Length | 3 Meters |
| Installation Type | robotic |
| Item Dimensions L x W x H | 15.94"L x 9.96"W x 15.67"H |
| Item Weight | 14.3 Pounds |
| Lithium Battery Energy Content | 14400 Watt Hours |
| Lithium Battery Voltage | 21.6 Volts (DC) |
| Load Capacity | 9 Pounds |
| Manufacturer | Chasing |
| Manufacturer Part Number | 40.40.300.0003 |
| Material Type | Plastic |
| Model Name | Hydro4 |
| Model Number | 40.40.300.0003 |
| Model Year | 2026 |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Lithium-ion Cells | 1 |
| Other Special Features of the Product | 14400 mAh capacity, Floating Battery with a 10-foot Cable, 3. |
| Power Source | Battery Powered |
| Required Assembly | No |
| Voltage | 25.2 Volts (DC) |
| Warranty Type | 3-Year Warranty |
S**N
Great quality
Everything was neatly organized and well-protected. Inside the box, it comes with the cleaner itself, a power control unit, the cable, and a user manual. Setup looks very straightforward,no complicated assembly required. The build quality feels premium. The unit has a sturdy, durable design, and it’s a bit heavier than I expected, which actually gives confidence that it’s made with strong internal components. The brushes feel firm and well-made, and the filter compartment is easy to access. The cable is long enough for most standard pools, and the power unit looks simple to operate with clearly labeled controls. I also like that the design looks modern and not bulky.
M**W
works perfectly!
This robotic pool cleaner does an excellent job keeping the pool spotless. Even though it’s a corded version, it’s very easy to use and the cable doesn’t get in the way. It has strong suction and picks up dirt, leaves, and debris efficiently. Setup was quick, and it runs smoothly without any issues. I also appreciate how reliable and consistent it is compared to some wireless models. Overall, a great value and highly effective—definitely recommend!
S**U
Climbs walls in floor only mode
This order arrived to my house on Monday, June 23. I unpacked it and installed it into the waterproof electrical box I used for my previous cleaner in pretty short order. Downloaded the app, and configured the Wi-Fi and Bluetooth with no issues as other people have previously mentioned; I guess they are just idiots. It took me 10 minutes, tops. This included a firmware upgrade. Everything worked as it’s supposed to. My pool is 20 x 40 with an 8 foot deep end. Two jets, two ladders, two sets of steps in the shallow corners. my biggest issue with the pool is tree debris from neighboring trees. Bark, twigs, leaves. After it sits in the pool, it decomposes and breaks down and turns into fine particulate matter. I played around with the manual setting on the floor for a while. Very cool to be able to go exactly where you want to go and get large piles of debris, dirt, leaves, pool, funk. I then created a custom setting. My parameters were floor only, S-shaped pattern, four hours. This video shows that it loves to hit the walls. In spite of the fact I selected floor only. The walls on my pool stay fairly clean. If this thing would stick to the program, it would probably do a pretty good job. However, if this first run is any indicator, I’m going to be returning this unit to Amazon in very short order. In the five minutes, it took for me to draft this review, it has climbed the walls and additional five times. In fact, I dare say it has spent more time on the walls than on the floor, even though it is supposedly on floor only mode. I will give it a few more days and see if it possibly needs to map my pool in order to perform better. If not, thank goodness it’s on prime, and I will just send it back and try another unit. If the situation improves, I will update my review and my stars. June 24 update: So, I will say it did a superb job of cleaning. I had a very heavy amount of debris since my old cleaner has been dead a month. It does not follow an S-pattern even when using one of the canned floor only formats. It just randomly scoots along, covering a solid 95% of my total floor space. I got the remaining 5% with the manual setting. It did not scrub the walls with this format either. As it approached the vertical surface, it would stop, pivot, and proceed. I think this is where the lack of S-pattern comes in. It does not do a precise 180 degree turn every time, causing it to go off in angles all over the place. My initial review was a 3, I will bump it up to 4, with considerations to a 5. I was skeptical with its initial performance out of the box. I have a large pool and would like the ability to manually program it to do what I want, as advertised. As long as it is durable and maintains this level of cleaning performance, I might forego the advertised features and give it 5 stars. July 17 update. Unit has lost connection and says it is not in the water. Neither is the case. I still have a 6 day window to send it back to Amazon for a full refund, so off it goes. Shame because it has potential. Cleaned well but programming bugs could not be overcome.
M**.
Great product
I like the pool machine.
M**T
you can drive your vacuum under water
I was on the fence when ordering this I had bought two of them. One started have some issues. through amazon I was able to get ahold of the company and WOW their customer service beyond helpful. They ship me a new one right away and sent me a return label to send the old one back. I was dreading a long hope i give up back and forth emails. Nope I think a total of 4 emails and a new one was ship express. Blew me away. If you are on the fence about any of their products, jump off that fence a go with this company I highly recommend they stand behind their products and give more than any other company I've dealt with. Pricing and customer service 10 star by me. Get one yourself and see. they have a lot of features like remote control. Yeah you can drive you vacuum in the pool. you wont be disappointed.
M**T
Easy to use and set up.
Great little device. It is light enough to handle. Holds enough charge for a few cycles. Only complaint is when i take it out. Have to pay extra attention to how you pull it from the water to prevent it from opening up on the intakes and dumping some of the debris. But that is very minor learning curve. Hope to get few years out of it. The app has bad reviews but i have had no issues with it. Works fine.
L**I
Very happy with robot/ cable needs work, but overall I’m happy
I decided to give 5 star even though I had problem with the cable. Why? Cause I was able to find somewhat solution to that where you stretch the cable a bit and keep it on the sun so the cable will build memory and stay straight for few days. It’s not ideal but it’s better than with no cable where you have to take it out every day and charge it. However I liked that the seller was very responsive and worked with me on the issue. Therefore I don’t mind fixing cable every few days and I’m happy with the product it’s self. Cleans very well and even very small particles which my previous robot didn’t. The only improvement I would add if they would offer warranty to “purchase” for like 5 years so I don’t have to worry about going bad in few years.
J**E
Do Not Buy
Poor performance. Not what I was hoping for. The cord tangles and twists, dangerously pulling the power box nearly into the pool on our second fry of using it. This happened when we set it in Custom settings to vacuum the floor of a round pool for 4 hours. The vacuum itself is good but the app is really bad. We couldn't get past the email prompt to set up WiFi. After correctly entering our email address several times, we never received an email so that we could get the code in order to access WiFi . Seriously, value for money? You pay a hefty sum for something that should have been fixed before it was put up for sale.
S**Y
Unfortunately the cable kept getting tangled in the brushes in a weird way! The brushes would have eventually been damaged from it.
P**M
Muy buena calidad, tira un poquito de tierra al sacarlo pero he ahorrado mucho en limpieza esto junto con el poolsavers mantienen mi alberca limpia
A**O
Funciona bien pero se descompuso muy rapido uno de los motores, solo me duro 8 meses y no he pidido conseguir el repuesto.
Trustpilot
2 weeks ago
1 month ago