HRO400-4(W) - Water filter HAIER - Free user manual and instructions

Product Type	Under-sink Reverse Osmosis Water Filter
Brand	Haier
Model	HRO400-4(W)
Filtration Stages	4 stages (Sediment, Pre-carbon, RO Membrane, Post-carbon)
Capacity	400 gallons per day (GPD)
Dimensions (W x D x H)	15 x 5 x 15 inches
Weight	12 lbs
Power Supply	110-240V AC, 50/60Hz (with booster pump, 24W)
Operating Pressure	40-80 psi
Operating Temperature	40-100°F (4-38°C)
Water Connection	1/4 inch quick-connect fittings
Storage Tank Capacity	3.2 gallons
Membrane Type	Thin Film Composite (TFC)
Filtration Efficiency	Removes up to 99% of contaminants including lead, chlorine, fluoride, and TDS
Filter Replacement	Pre-filters every 6 months, RO membrane every 2-3 years
Warranty	1 year limited warranty on parts
Certifications	NSF/ANSI 58 compliant
Installation	Under-sink, requires 1/2 inch clearance below sink
Maintenance	Periodic cleaning of sediment filter and sanitization recommended
Color	White

Frequently Asked Questions - HRO400-4(W) HAIER

How often should I replace the filters on the Haier HRO400-4(W)?

The pre-filters (sediment and carbon) should be replaced every 6 months, while the RO membrane typically lasts 2-3 years depending on feed water quality. Always follow the indicator on the system or manual for timely replacement.

Does the HRO400-4(W) require electricity to operate?

Yes, this model includes a built-in booster pump to maintain optimal pressure, so it requires a standard 110-240V AC outlet. The pump consumes about 24W during operation.

What is the water flow rate of this filter?

The system is rated at 400 gallons per day (GPD), which translates to approximately 0.28 gallons per minute under standard conditions. Actual flow may vary based on water pressure and temperature.

What contaminants does the HRO400-4(W) remove?

The 4-stage filtration removes up to 99% of common contaminants including chlorine, chloramine, lead, fluoride, arsenic, nitrates, and total dissolved solids (TDS). It also improves taste and odor.

How do I install the Haier HRO400-4(W) under my sink?

Installation requires basic plumbing skills. Connect the system to the cold water line via the included adapter, install the drain saddle, and connect the faucet. The booster pump plugs into a power outlet. Detailed instructions are in the manual.

What is the storage tank size?

The system comes with a 3.2-gallon pressurized storage tank. The actual usable water volume may be slightly less due to air bladder pressure.

Can I use the HRO400-4(W) with well water?

Yes, but well water may require additional pre-treatment (e.g., sediment filter or water softener) if it contains high levels of sediment, iron, or hardness. The system is designed for municipal or well water within recommended pressure and TDS limits.

How do I change the RO membrane?

Turn off water supply and power, relieve pressure by opening the faucet. Disconnect the membrane housing, remove and discard the old membrane, insert the new one following the arrow direction, and reassemble. Flush the system for 1-2 hours before use.

What is the product warranty?

Haier offers a 1-year limited warranty on the system against defects in materials and workmanship. The membrane and filters are consumables and not covered. Registration may be required.

Is the Haier HRO400-4(W) NSF certified?

Yes, the system is compliant with NSF/ANSI Standard 58 for reverse osmosis systems, ensuring it meets safety and performance criteria for contaminant reduction.

USER MANUAL HRO400-4(W) HAIER

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