Day: June 4, 2026

High-pressure EC plug fan, 250mm backward-curved, for an air handling unit
By longwell / June 4, 2026 / Engineering Case Studies

High-Pressure EC Plug Fan for AHU Integration: 1442 Pa Case Study

A dense filter bank and a deep coil turn an air handler into a wall of...

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Custom 230V EC centrifugal fan in the mechanical envelope of a 115V model
By longwell / June 4, 2026 / Engineering Case Studies

Custom 230V EC Centrifugal Fan as an OEM Drop-in Replacement

Selling the same machine in Europe usually means redesigning around a ...

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Plug fan with potted fan electronics for a humid air handler
By longwell / June 4, 2026 / Engineering Case Studies

When a Customer Asks for Silicone Potting by Name

The customer asked for silicone potting by name. That request tells yo...

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direct drive fan vs belt drive fan
By longwell / June 4, 2026 / Technical Articles

Direct Drive vs Belt Drive Fan: Performance Comparison Guide

Industrial fans play an important role in HVAC systems, warehouses, da...

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Framed centrifugal fan module, 630mm, for an air handling unit
By longwell / June 4, 2026 / Engineering Case Studies

Framed AC Centrifugal Fan for AHU: 17,893 m3/h Case Study

The customer asked for a custom frame around a specific fan. The bette...

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OEM fan blower assembly for a portable domestic fan heater
By longwell / June 4, 2026 / Engineering Case Studies

OEM Fan Blower for Portable Heaters, 220V: Case Study

The customer asked whether an aluminum motor would be cheaper. Answeri...

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AC axial fan, 120mm, for cooling an industrial control panel
By longwell / June 4, 2026 / Engineering Case Studies

AC Axial Fan for Industrial Control Panels: 112 CFM Case Study

The customer wanted one drop-in replacement. We proposed two, and the ...

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AC centrifugal fan, double inlet forward-curved, for an air handling unit
By longwell / June 4, 2026 / Engineering Case Studies

AC Centrifugal Fan for AHU and RTU: 3151 m3/h Case Study

The airflow target was achievable. Fitting it into the housing the cus...

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AC axial fan, 92mm, cooling a commercial vacuum packaging machine
By longwell / June 4, 2026 / Engineering Case Studies

110V AC Axial Fan for Vacuum Packaging Machines: 92mm Case Study

The customer named a temperature the standard part does not reach. Say...

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AC axial fan, 500mm, rewound for a 600V industrial supply
By longwell / June 4, 2026 / Engineering Case Studies

600V AC Axial Fan for Industrial HVAC: 500mm Case Study

Six hundred volts is an awkward voltage. Solving it with a transformer...

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