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Day: August 18, 2026

ventilation fan CE UL ETL RoHS

By longwell / August 18, 2026 / Technical Articles

Ventilation Fan Certifications: CE, UL, ETL, RoHS – What Each Means?

Performance specifications like airflow, static pressure, and noise le...

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How-to-Replace-Fan-Motor-Beari

By longwell / August 18, 2026 / Fan Engineering Guides

How to Replace Fan Motor Bearings?

Bearing replacement is not the first answer to every noisy fan motor. ...

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longwell-lwaa6d800s-7myb-15-pr

By longwell / August 18, 2026 / Engineering Case Studies

Harsh Climate Condenser Cooling with an 800mm AC Axial Fan

Learn how we built an 800mm AC axial fan to push 27,089 m3/h at 185 Pa...

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