Our centrifugal fans with free-running impellers are designed for installation into air handling units (AHUs).
An AHU is a factory-made assembly that includes a fan (or fans) and other equipment to circulate, clean, heat, cool, humidify, dehumidify, and mix air. It is typically built around a framing system with metal panels to fit the components. AHUs help control temperature, humidity, and air cleanliness.
Draw-Through: The fan pulls air through filters and a cooling coil before sending it to the space or ducting. The section before the fan has negative pressure.
Blow-Through: The fan pushes air through filters and a cooling coil before sending it to the space or ducting. The section after the fan has positive pressure.
Centrifugal fans circulate air throughout a building. The choice of fan depends on the required air volume (m³/h) and static pressure (Pa). Designers usually use specialized software to select the right fan.
To reduce vibration, fans and motors are often mounted on anti-vibration supports, unless the drive is external.
VAV systems adjust fan speed based on load conditions. A frequency inverter allows fans to run from very low to very high speeds, improving energy efficiency. Modern EC motors also help reduce energy use, aligning with ERP standards.
Some applications need only simple air exchange, while others require precise control of temperature, humidity, and air purity. Noise is another factor when selecting fan components.
We supply components for efficient air movement in AHUs, including backward-curved impellers, EC motorized impellers, and belt-driven options where needed.
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