Author: longwell

Technician performing industrial fan maintenance on a bearing housing
By longwell / September 16, 2026 / Fan Engineering Guides

How to Lubricate & Maintain Industrial Fans

A planned maintenance routine costs a few hours a year and prevents mo...

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Blower wheel removal using a proper wheel puller on a motor shaft
By longwell / September 16, 2026 / Fan Engineering Guides

Blower Wheel Removal Without Damage

Levering a blower wheel off its shaft bends blades, loses balance clip...

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Technician diagnosing a failing ECM blower motor and its control module
By longwell / September 16, 2026 / Fan Engineering Guides

Diagnosing a Failing ECM Blower Motor

ECM faults are easy to misread, because a bad control signal, a dirty ...

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Cleanroom & FFU: EC Fans in Semiconductor Fabs
By longwell / September 16, 2026 / Fan Engineering Guides

Cleanroom & FFU: EC Fans in Semiconductor Fabs

An FFU is not simply a fan above a filter. In a semiconductor cleanroo...

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10-Best-Ventilation-Fan-Manufacturers-2
By longwell / September 16, 2026 / Technical Articles

10 Best Ventilation Fan Manufacturers 2026

The ventilation industry is experiencing a transformation. Manufacture...

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Cold Chain & Refrigeration Evaporator Fans
By longwell / September 15, 2026 / Fan Engineering Guides

Cold Chain & Refrigeration Evaporator Fans

An evaporator fan can keep spinning while delivered airflow collapses....

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Grow room ventilation fan and carbon filter installed in a grow tent
By longwell / September 15, 2026 / Fan Engineering Guides

Grow Room & Greenhouse Ventilation Fans

Grow room ventilation has to manage temperature, humidity, CO2 and odo...

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Commercial kitchen exhaust blower on a roof above a restaurant canopy
By longwell / September 15, 2026 / Fan Engineering Guides

Kitchen & Commercial Range Hood Blowers

A commercial kitchen exhaust system has to capture grease-laden vapour...

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Ziehl-Abegg-Alternative-Guide--Drop-In-
By longwell / September 15, 2026 / Technical Articles

Ziehl-Abegg Alternative Guide: Drop-In EC Fan Replacements by LONGWELL

When HVAC, ventilation equipment manufacturers, and OEMs evaluate fan ...

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Fan wall array installed in a commercial building air handling unit
By longwell / September 14, 2026 / Fan Engineering Guides

HVAC Fan Wall in Commercial Buildings (Case Study)

A worked example of a fan wall project in a commercial office building...

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