Flexible Cleaning, Your Way — 2-in-1 Cordless Freedom or Continuous Power
- Unlimited Cleaning Power: Cleans medium to large sized pools non-stop — no battery limits, ideal for heavy-duty use.
- The World's 1st Dual Cleaning System: Equipped with our latest twin inlets and a dual-zone filter basket design.
- Dual-Stage Filtration: The front filter zone captures leaves and larger debris, while the rear zone performs a precision follow-up, trapping fine particles like sand and gravel.
- HydroCurve™ S: Intelligent S-shaped cleaning path for up to 95% pool coverage.
- Enhanced Waterline Cleaning: Patented lateral jets clean 25% more edge area and remove stubborn buildup.
- 3 Cleaning Modes: Auto, Floor, and Walls & Waterline — covering every surface, even slopes and platforms.
- Ultra Cleaning Mode*: Boosts cleaning power by 30% in Ultra Mode for deep cleaning with enhanced suction and full-coverage scrubbing.
- Smarter App Control: Set weekly schedules, runtimes, and delay starts — all from your phone.
- Large Dual-Zone Filter: 4.1L basket with 180μm mesh traps 40% more debris than standard filters.
- Durable Motors: Salt- and chlorine-resistant motors last up to 3× longer than others.
- Auto-Docking: Automatically returns to pool edge — pick up effortlessly.
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Brand Notice
This product is manufactured and sold by Chasing and is not affiliated with, sponsored by, or associated with Robelle or its pool chemical products in any manner. All after-sales services, technical support, and customer assistance relating to the “POOLMATE” robotic pool cleaner products are independently provided by Chasing.
Ultra Smart. Ultra Complete.
Hydro 4 Robotic Pool Cleaner
The only pool cleaner you'll ever need for all kinds of pools.
Why Hydro 4 Stands Out as the Most Powerful Pool Vacuum
Industrial 1st Design
Power That Pulls Everything In
Dual centrifugal pumps deliver a massive 5,070 GPH through twin inlets & dual-zone basket — the front traps larger debris, while the rear captures fine sand and silt. Wider coverage, twice the cleaning, zero effort.
Chasing – Tap into Smart Control
Beyond Smart.Now Real-Time.
Experience Hydro 4’s real-time underwater operation and remote control. Steer, switch modes, or call it back — all from the app, even mid-clean. Monitor status, set timers, and customize runtimes wherever you are. OTA updates keep it smart and getting smarter.
Precision Control. Wherever You Need It.
Navigate 360° Manually
Need a spot clean or want to redirect mid-cycle? Just tap and steer. With manual 360° navigation, you can guide Hydro 4 smart pool vacuum anywhere in your pool — ideal for tight corners, quick cleanups, or custom routines. It’s remote control, redefined.
Next-Gen Horizontal Waterline Mastery
The Waterline Specialist
Unlike top-jet designs, our patented Lateral Movement Tech uses dual side jets to tilt the body up to 2 inches, delivering stable, continuous waterline cleaning. With Active Brushes and reinforced wall-climb control, this top rated robotic pool cleaner grips tile, vinyl, and mosaic for effortless 0–90° transitions and full 3D scrubbing.
It Makes Your Pool Care Effortless
Effortless Wrap-Ups
Set it and forget it — When the job’s done or the battery’s low, your robot auto-docks and floats to the surface, making pickup a breeze. Need it back early? Just tap for instant retrieval—anytime you want. At only 14.33 lbs with a snap-out filter basket, cleanup is quick and hassle-free—just like your pool should be.
Perfect For Medium to Large Pools
Hydro 4 efficiently cleans medium to large in-ground and above-ground pools up to 1,614 sq. ft. for Private pools/Public pools, geometric or freeform designs.
Trusted by Experts
Featured by leading media and recognized with international recognized design awards.
Frequently Asked Questions
What kind of pool is suitable for a robotic pool cleaner like the Hydro 4?
What kind of pool is suitable for a robotic pool cleaner like the Hydro 4?
This automatic pool cleaner is ideal for pools up to 15 meters long and 200 square meters in area, regardless of shape. It’s compatible with various materials, such as vinyl, fiberglass, and ceramic, making it versatile for different swimming pool types.
What types of water can this pool cleaner handle?
What types of water can this pool cleaner handle?
Withstanding water temperatures between 5 and 40°C, this automatic pool cleaner performs well in pools with chlorine levels up to 4ppm, salt levels up to 10,000ppm, and pH levels from 7 to 7.8. It’s suitable for mineral hot tubs but not recommended for storage tanks or fish ponds.
Which areas of the pool can the Hydro 4 clean?
Which areas of the pool can the Hydro 4 clean?
The Hydro 4 robotic pool cleaner effectively cleans the pool bottom, walls, and waterline, providing comprehensive automatic pool cleaning for a spotless swimming experience.
Can l place the Hydro 4 pool robot anywhere in the pool to start working?
Can l place the Hydro 4 pool robot anywhere in the pool to start working?
Yes, you can position this robotic pool cleaner anywhere in the pool to begin the cleaning cycle. Its user-friendly design allows for flexible setup.
How many filter type does it have?
How many filter type does it have?
The Hydro 4 robotic pool cleaner comes with a single filter type. Please refer to the filter documentation for more details on its advanced pool filtration system.
How long does the cordless version take to reach a full charge?
How long does the cordless version take to reach a full charge?
The cordless model requires 4 hours for a complete charge, ensuring consistent and efficient pool cleaning sessions.
How many cleaning modes does the Hydro 4 robotic pool cleaner have?
How many cleaning modes does the Hydro 4 robotic pool cleaner have?
The Hydro 4 robotic cleaner offers three cleaning modes: Standard, Fast, and Ultra, allowing you to choose the automatic pool cleaning mode that best suits your pool’s needs.
Can I use the Hydro 4 in rainy days?
Can I use the Hydro 4 in rainy days?
Yes, the Hydro 4 automatic pool cleaner can be used on rainy days. However, to ensure the durability of the device, the power control box should be kept dry and placed under a sheltered area to avoid prolonged exposure to rain.
Can Hydro 4 handle large amounts of leaves and twigs? Looking for a pool vacuum for large debris.
Can Hydro 4 handle large amounts of leaves and twigs? Looking for a pool vacuum for large debris.
Absolutely. With its dual suction and 4.1L debris basket, it’s built to manage dense leaf coverage and large organic debris common in autumn and winter.
Should I clean my pool with automatic pool cleaner before closing it for winter?
Should I clean my pool with automatic pool cleaner before closing it for winter?
Yes. A deep clean before winter prevents algae growth, pipe clogs, and makes spring opening much easier. Hydro 4 is perfect for this final cleanup. Learn How to Close Your Pool the Smart Way.
