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Day: June 3, 2026

Double-inlet forward-curved centrifugal blower for a commercial AHU

By longwell / June 3, 2026 / Engineering Case Studies

AHU Centrifugal Blower for a 5000 m3/h Duty Point: Case Study

The customer asked for AC rather than EC, and for a single speed. Both...

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AC fan speed controller, 220V wall-mounted phase-angle type

By longwell / June 3, 2026 / Engineering Case Studies

AC Fan Speed Controller for Commercial HVAC: 220V Case Study

The customer wanted to add a speed knob to a product that already work...

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Cross-flow fan customization: custom side plates for an OEM chassis

By longwell / June 3, 2026 / Engineering Case Studies

OEM Cross-Flow Fan Customization: 40,000 Side Plates a Year

The customer needed a sample in seven days and hard tooling takes week...

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