Month: April 2026

longwell-wi-6952645907-project
By longwell / April 9, 2026 / Engineering Case Studies

HVAC Ventilation 230V 125mm Circular Duct Fan

Learn why this 125mm circular duct fan drops to 294 m3/h and uses an I...

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longwell-lwbe3g225-092ps-04-pr
By longwell / April 9, 2026 / Engineering Case Studies

Custom Centrifugal Fan Mounting Hardware for HVAC Units

We changed the centrifugal fan mounting hardware to male-female stando...

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By longwell / April 9, 2026 / Technical Articles

Axial Fan Not Working 10 Common Problems and Solutions

LONGWELL Axial Fan Not Working? 10 Common Problems & Troubleshooti...

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longwell-wi-6948623418-project
By longwell / April 8, 2026 / Engineering Case Studies

Commercial Air Curtain Blower Wheel for Wide Spans

An OEM needed a rigid air curtain blower wheel to span 873 mm. We used...

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longwell-wi-6948627599-project
By longwell / April 8, 2026 / Engineering Case Studies

A 500mm EC Exhaust Fan Retrofit That Drops Power to 200W

Review a real ec exhaust fan retrofit for a 24/7 production line. See ...

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By longwell / April 8, 2026 / Technical Articles

How to Select the Right Centrifugal Fan: An 8-Step Selection Guide

How to Select the Right Centrifugal Fan: An 8-Step Selection Guide Are...

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By longwell / April 7, 2026 / Technical Articles

Rediscovering “External Rotor”: An Underestimated Fan Revolution

In-Depth Analysis of External Rotor Axial Flow Fans Structural Princip...

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By longwell / April 6, 2026 / Technical Articles

Rethinking Ventilation Why Engineers Are Choosing EC Duct Fans

Rethinking Ventilation: Why Engineers Are Choosing EC Duct Fans LONGWE...

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longwell-lwaa2e200s-7mkw-28-pr
By longwell / April 3, 2026 / Engineering Case Studies

Designing a 60Hz AC Axial Fan for -30C Outdoor Cabinets

Learn how we engineered a custom 60hz ac axial fan with cold-rolled st...

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longwell-wi-6936470257-spec-sh
By longwell / April 3, 2026 / Engineering Case Studies

Sizing a Commercial Roof Exhaust Fan for Facility Airflow

Learn how to size a commercial roof exhaust fan. We match big centrifu...

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