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HAHU – Horizontal Mini Air Handling Unit

The Polar Air Horizontal Mini AHU fan coil units have been specifically designed for horizontal installations and suitable for ducted air distribution. With sandwich panels to achieve low noise levels, integrated control box and panels to access components, these units represent one of the most cost-effective solutions to provide a comfortable environment for both commercial and industrial applications. Their design also reduces on-site installation time and labor costs.

Units are delivered completely assembled with motor wiring introduced into the control box to reduce on-site installation time and manpower. It contains side panels that provide easy access to fans, motors, and filters.

HAHU – Horizontal Mini Air Handling Unit Product Range

The Polar Air Horizontal Mini AHU fan coil has a range of AC and EC motor in 415V/3Ph/50Hz or EC motor in 115V-220V/60Hz units with the following capacities:

Horizontal mini AHU [HAHU] Range
Mini AHU horizontal HAHU range
Product range legend

Main Features



Made from frameless integrated folded steel structure, it uses a sandwich panel consisting of two walls with high-pressure PU foam inner insulation. Both walls are made of pre-coated steel 1” thickness.

Water coils

Water Coils

Built with seamless copper tubes and headers, mechanically expanded into corrugated aluminium fin material for a permanent primary to secondary surface bond. Tested at 35 bar, with maximum operating limits at 20 bar.


Fan Blowers

Galvanized steel housing center plate fixed impeller, with riveting compression on the end ring and galvanized steel sheet mounting feet to ensure adequate strength. All impellers and motors are fully balanced according to ANSI/AMCA-204 standard.



EC motors with included driven controls PCB, constant torque, permanent magnet, 3 speeds pre-set to allow precise air balancing.



Washable filters made of double-layer acrylic with an aluminium frame containing an G4 (Merv 8) efficiency class. F8 (Merv14) efficiency filters are optional.

Drain pans

Condensate Pans

Painted Steel drain pans with 3/16” of insulation on the outer wall and isolated in aluminium in the inner wall, positively sloped, coated with self-extinguishing closed cell expanded polyethylene with thermal properties.



Optimized water circuit designs tested in accredited thermal test rooms to guarantee dependable performance and low water pressure drops. Airflow supplied at 0.5 in.wg External Static Pressure (ESP), can reach up to 4858CFM at highest speed.

Related Project References


Specified under Eurovent Standards (50 & 60Hz)

Metric System
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Specified under AHRI Standards (60Hz)

Imperial System
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We have a complete range of accessories, please contact us directly for any specific inquiry you might have or download our complete product catalogue.

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For any product related information please refer to our latest catalog or contact us directly, we will be happy to assist.

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