HAILEA ACO-5503 Silent Air Pump

HAILEA ACO-5503 Silent Air Pump is a compact, energy-efficient aquarium air pump designed to provide reliable aeration with very low operating noise. Featuring a two-outlet design, adjustable airflow control, and advanced noise-reduction technology, the ACO-5503 delivers up to 3.5 L/min (210 L/H) of steady airflow while consuming only 4W of power.

The ACO-5503 is an excellent choice for small to medium aquariums, breeding tanks, quarantine tanks, sponge filters, and air stones where quiet and dependable aeration is important. Its compact construction and low power consumption make it suitable for continuous everyday aquarium use.

Super Silent Operation

The ACO-5503 incorporates an advanced air compression system, vibration-damping structure, and multi-level muffling technology to significantly reduce operating noise. With a noise level of approximately 40dB or less, it is suitable for bedrooms, living rooms, offices, and other quiet environments.

Powerful 3.5 L/Min Airflow

Despite its compact size, the pump produces up to 3.5 litres of air per minute, providing dependable oxygenation for aquarium air stones, sponge filters, and other air-driven equipment.

Dual Air Outlets

Two separate air outlets allow you to operate two air stones, sponge filters, or other aeration accessories from a single pump. The airflow can be adjusted to suit your aquarium requirements.

Adjustable Airflow Control

The manual airflow control allows you to increase or decrease the output according to the needs of your fish and aquarium equipment, providing greater control over aeration.

Energy Efficient 4W Design

With a power consumption of only 4W, the ACO-5503 provides economical long-term operation and is suitable for continuous aquarium aeration.

Stable Air Pressure

Special synthetic rubber diaphragm components help maintain consistent air volume and pressure while supporting reliable performance during everyday use.

Compact & Low Maintenance

The compact construction saves space and requires no oil lubrication. Regularly cleaning or replacing airline tubing, air stones, and sponge filters helps maintain maximum airflow performance.

Specifications

• Brand: HAILEA
• Model: ACO-5503
• Product Type: Silent Aquarium Air Pump
• Power Consumption: 4W
• Air Output: 3.5 L/min (210 L/H)
• Maximum Pressure: More than 0.015 MPa
• Noise Level: Less than 40dB
• Number of Outlets: 2
• Outlet Diameter: Approximately 4mm
• Voltage: 220–240V
• Frequency: 50/60Hz
• Dimensions: Approximately 147 × 75.5 × 65.5mm
• Weight: Approximately 450g

Ideal Applications

• Small & Medium Aquariums
• Freshwater Aquariums
• Planted Tanks
• Breeding Tanks
• Quarantine Tanks
• Sponge Filters
• Air Stones & Bubble Bars
• Fish Holding Systems

Key Features

• Super-silent operation below 40dB
• 3.5 L/min or 210 L/H airflow
• Low power consumption of only 4W
• Two adjustable air outlets
• Advanced vibration and noise reduction system
• Stable air pressure and airflow
• Compact, space-saving design
• Oil-free and low-maintenance operation
• Ideal for continuous aquarium aeration

Installation & Maintenance

Place the air pump in a dry and well-ventilated location, preferably above the aquarium water level. Connect suitable airline tubing to the outlets and use an aquarium check valve to help prevent water from flowing back into the pump. Clean the air stones, tubing, and connected filters regularly to maintain strong airflow.