Day: September 5, 2026

Upblast and downblast roof exhaust fans installed on a flat roof
By longwell / September 5, 2026 / Fan Engineering Guides

Roof Exhaust: Upblast vs Downblast

The difference is where the air goes when it leaves. Upblast throws it...

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5 Myths About Fans, Debunked
By longwell / September 5, 2026 / Fan Engineering Guides

5 Myths About Fans, Debunked

Five fan myths can distort airflow decisions and create maintenance ha...

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Fan Wall Controls and Staging: How to Balance Fan Count and Speed
By longwell / September 5, 2026 / Fan Engineering Guides

Fan Wall Controls and Staging: How to Balance Fan Count and Speed

Design a stable fan wall sequence by validating sensors, separating sp...

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How to Measure an Old Fan for Replacement: Fit and Duty Checks
By longwell / September 5, 2026 / Fan Engineering Guides

How to Measure an Old Fan for Replacement: Fit and Duty Checks

Build a useful fan replacement record: identify rigid datums, measure ...

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