Chasing Hydro 4 Battery Robotic Pool Cleaner

The box includes the Chasing Hydro 4 cleaning unit, the detachable floating battery buoy, the buoy charging adapter, a sealing O-ring, and the user guide and document pack. Hands-on setup takes about 15 minutes; plan for a full buoy charge, which takes about 4 hours, before the first run.

Both share the same twin-inlet dual-pump suction system rated at 320 liters per minute (5,070 GPH) and the same 4.1 L dual-zone filter basket. The Battery version runs from a floating battery buoy on a 9.8 ft anti-snag tether, so there is no deck cable to manage and no outlet needed at the pool edge, with up to 3.5 hours of cleaning per charge. The Corded version draws continuous power from a pool-deck control box through a 49.2 ft cable, trading cordless freedom for unlimited runtime.

It is rated for medium to large in-ground and above-ground pools up to about 1,614 square feet, with depths from 1.6 to 9.8 ft, and is safe on concrete, vinyl, fiberglass, and tile. It cleans the floor, climbs the walls, and works the waterline, with Auto, Floor, and Walls and Waterline modes, 1, 2, and 3 hour cycle presets, and an Ultra mode that raises cleaning power by about 30 percent for heavy debris.

A full charge supports up to 3.5 hours (210 minutes) of cleaning, which covers most residential pools in a single run. The buoy detaches from the robot and charges separately with the included adapter in about 4 hours, so you never have to haul the full unit to an outlet between cycles.

Yes, with the CHASING GO3 app on iOS 11 or Android 7 and later. After powering the robot on, set it on a flat surface and wait about 20 seconds for its self-check and sensor calibration before placing it in the pool; pairing starts over Bluetooth, and remote control, cloud features, weekly schedules, delayed starts and over-the-air updates need a 2.4 GHz Wi-Fi network within reach of the pool. The app offers 360 degree manual steering, mode and cycle selection and a water temperature display, and when a cycle ends the unit parks at the pool edge and floats up for pickup.

RoboticsSelect is an authorized Chasing dealer, so Chasing's limited warranty applies in full: 24 months on the charging and power system and the transmission system (main unit, battery buoy, floating cable and slip ring, motors, gears and bearings) and 6 months on consumable parts such as the filter basket, brushes, scrapers and tracks. The period starts on the date of sale to you, and a claim needs your proof of purchase and the unit's serial number. Chasing excludes damage from misuse, foreign-body ingestion, unauthorized repair, units bought from unauthorized sellers, and malfunctions caused by commercial, rental or other non-home use, so the Hydro 4 should be treated as a residential cleaner. Warranty claims go through us: email support@roboticsselect.com or call (412) 415-7375, Monday through Friday 9am to 5pm EST.

Shipping is free within the contiguous United States with no order minimum. Most orders leave the warehouse within 1 to 5 business days, and delivery typically takes another 5 to 8 business days after dispatch. Tracking information is emailed within 24 hours of the order leaving the warehouse. We do not ship outside the USA.

You have 30 days from the date you receive the item to initiate a return, and it must be unopened and unused in its original packaging. You can cancel any order free of charge before it ships; after shipment, elective returns incur return shipping costs and a restocking fee. Inspect the package on delivery and report any damage with photos to support@roboticsselect.com within 24 hours. Refunds are processed within 10 days of the returned item arriving.

Yes. Chasing lists the Hydro 4's motors as salt and chlorine resistant, and the Hydro 4 manual sets the water limits: salt up to 5,000 ppm, free chlorine up to 4 ppm, pH between 7 and 7.8, and water temperature between 10 and 35 degrees C (50 to 95 degrees F). Water outside those ranges, or algae on the walls, is listed as a cause of the robot failing to climb, so balance the water and brush the walls before blaming the unit.

The Hydro 4 manual lists the causes in order: a blocked filter basket, a foreign object in the impeller, water temperature or pH outside the rated range, and algae on the walls. Rinse the basket, clear the impeller, test the water and scrub the walls, and Chasing's FAQ notes that a clogged filter is the usual reason a Hydro 4 stops climbing. If it moves but barely picks up debris, check the tracks for a trapped object and the basket again. If it only cleans part of the pool, remove obstacles and start the cycle with a fully charged buoy.

No. Chasing's manual says no one is allowed to enter the pool while the Hydro 4 is working, and the cleaner should be out of the water before anyone swims. Keep children from operating it without supervision and never touch the rotating brushes while it runs. It is built for pool water only, not ponds or tanks.

Clean the filter basket thoroughly and put it back in the robot, make sure no water remains inside, and store the unit indoors in a cool, dry place between 5 and 45 degrees C. Chasing recommends replacing the filter screen at least every three months of regular use, so winter is a good time to fit a fresh one. Charge the buoy with its adapter before storing it and keep it dry and out of direct sun, since the buoy is the only part of the system that holds a battery.