Day: September 19, 2026

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...

Read More »
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...

Read More »
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 ...

Read More »
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...

Read More »
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...

Read More »
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 ...

Read More »
Fan Drive Commissioning Checklist: Direct vs Belt Service
By longwell / September 19, 2026 / Fan Engineering Guides

Fan Drive Commissioning Checklist: Direct vs Belt Service

Direct drive or belt drive? This engineering walkthrough compares both...

Read More »
Duct Fan Submittal Checklist: Evidence Before Approval
By longwell / September 19, 2026 / Fan Engineering Guides

Duct Fan Submittal Checklist: Evidence Before Approval

“Inline” and “centrifugal” are not opposite fan types. Inline describe...

Read More »
OEM Fan vs Off-the-Shelf: When to Customize
By longwell / September 19, 2026 / Fan Engineering Guides

OEM Fan vs Off-the-Shelf: When to Customize

Should an OEM customize a fan, configure an existing platform, or keep...

Read More »
ebm-papst / Ziehl-Abegg Alternatives: How to Evaluate
By longwell / September 19, 2026 / Fan Engineering Guides

ebm-papst / Ziehl-Abegg Alternatives: How to Evaluate

Can another EC centrifugal fan replace an ebm-papst or Ziehl-Abegg uni...

Read More »