Month: September 2026

Blower vs Fan — What's the Difference?
By longwell / September 20, 2026 / Fan Engineering Guides

Blower vs Fan — What’s the Difference?

Fan, blower, and compressor are not separated by one universal pressur...

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EC vs AC Motor Fans: Energy Savings & Payback
By longwell / September 20, 2026 / Fan Engineering Guides

EC vs AC Motor Fans: Energy Savings & Payback

An EC fan can save energy compared with an AC fan—but there is no hone...

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Forward-curved and backward-curved centrifugal wheels ready for selection
By longwell / September 20, 2026 / Fan Engineering Guides

Backward-Curved vs Forward-Curved: Which to Choose

Both wheels turn in a scroll and both move air outward, yet they suit ...

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Industrial centrifugal fan in a high ambient unattended equipment application
By longwell / September 20, 2026 / Technical Articles

UL 507 2026 Update Buyer Checklist for High Ambient and Unattended Fans

UL 507 changed in 2026. Use this buyer checklist to define high ambien...

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Centrifugal vs Axial Fan: Pick the Right One
By longwell / September 19, 2026 / Fan Engineering Guides

Centrifugal vs Axial Fan: Pick the Right One

Axial and centrifugal fans are not selected by shape alone. This video...

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Plug fan without scroll housing next to a traditional housed centrifugal fan
By longwell / September 19, 2026 / Fan Engineering Guides

Plug Fan vs Housed Fan (Scroll) Comparison

A plug fan drops the scroll and blows straight into the plenum. That c...

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Fan Wall vs Single Large Fan for AHU
By longwell / September 19, 2026 / Fan Engineering Guides

Fan Wall vs Single Large Fan for AHU

One large fan is simple. A fan wall adds modules, control options and ...

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Metal vs Plastic Impeller: Durability & Cost
By longwell / September 19, 2026 / Fan Engineering Guides

Metal vs Plastic Impeller: Durability & Cost

Metal is not automatically durable, and plastic is not automatically c...

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PSC-to-ECM Blower Motor Retrofit: Fit & Payback
By longwell / September 19, 2026 / Fan Engineering Guides

PSC-to-ECM Blower Motor Retrofit: Fit & Payback

Should you replace an AC or PSC blower motor with an ECM? This enginee...

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High Pressure vs High Volume Blowers
By longwell / September 19, 2026 / Fan Engineering Guides

High Pressure vs High Volume Blowers

Should you choose a high-pressure blower or a high-volume blower? The ...

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