Fan Impellers

Impeller geometry decides a fan’s efficiency, pressure capability, noise spectrum and overload behaviour. Articles under this tag compare radial, forward, backward and airfoil blade forms, explain material choices between metal and plastic, and cover balancing and manufacturing quality checks.

High-temp fan with a shaft cooling wheel and isolated bearings
By longwell / August 22, 2026 / Fan Engineering Guides

High-Temp Fan vs Standard Fan Materials

Heat attacks a fan from three directions at once: the wheel, the beari...

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Single inlet and double inlet centrifugal fan wheels compared
By longwell / August 21, 2026 / Fan Engineering Guides

Single Inlet vs Double Inlet Centrifugal Fans: What are different?

A double inlet wheel takes air from both sides, roughly doubling airfl...

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Aluminum-vs-Steel-vs-Composite
By longwell / August 19, 2026 / Fan Engineering Guides

Fan Impeller Material Selection: Aluminum, Steel, or Composite?

Aluminum, steel and composite are broad material families—not complete...

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LONGWELL centrifugal fan
By longwell / July 15, 2026 / News

Types of Centrifugal Fan Impellers Explained

In HVAC and industrial ventilation systems, centrifugal fans are widel...

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metal duct fan vs plastic
By longwell / July 10, 2026 / News

Metal vs Plastic Duct Fan: Which is Better for Industrial Use?

In industrial ventilation systems, ducts are usually quite long, and s...

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customized impeller
By longwell / June 24, 2026 / Engineering Cases

LWPI-Φ107X762-01 Cross-Flow Fan Impeller for HVAC OEM

A commercial HVAC OEM required a 762mm x 107mm drop-in replacement cro...

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axial fan blade
By longwell / June 24, 2026 / Engineering Cases

406-522mm LWA Series Axial Fan Blades for HVAC Condenser Units

An HVAC OEM required a portfolio of four robust axial fan blades (406m...

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Longwell centrifugal fan
By longwell / June 17, 2026 / News

How to Improve Centrifugal Fan Efficiency? 5 Optimization Strategies

Efficient airflow is the lifeblood of modern industrial and commercial...

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LWA-Ø385x115-5
By longwell / May 15, 2026 / Engineering Cases

LWA-385×115-5 Axial Fan Impeller for Commercial HVAC OEM

An HVAC OEM required a custom 385mm axial fan blade for a new condense...

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longwell LWAC-50610 cross flow fan
By longwell / May 14, 2026 / Engineering Cases

610mm Cross-Flow Fan Housing & Impeller for HVAC OEMs

An HVAC OEM required a 610mm motorless cross-flow fan sub-assembly. Se...

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