Fan Engineering Guides

Video-led explanations of fan operation, selection, testing and system behavior for HVAC and equipment engineers.

Fans for Battery Energy Storage (BESS) Cooling
By longwell / August 21, 2026 / Fan Engineering Guides

Fans for Battery Energy Storage (BESS) Cooling

Use a measured BESS cooling workflow to map heat sources, air paths, i...

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Fireplace & Wood Stove Blowers Explained
By longwell / August 21, 2026 / Fan Engineering Guides

Fireplace & Wood Stove Blowers Explained

A fireplace blower moves room air around hot appliance surfaces—but it...

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Air Curtain Blowers: How They Work & Selection
By longwell / August 21, 2026 / Fan Engineering Guides

Air Curtain Blowers: How They Work & Selection

An air curtain is not an invisible wall. It is a high-momentum planar ...

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Data Center Cooling with EC Fan Arrays
By longwell / August 21, 2026 / Fan Engineering Guides

Data Center Cooling with EC Fan Arrays

An EC fan array is more than several fans running in parallel. This en...

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EC FanGrid Retrofit for AHU: Before & After
By longwell / August 21, 2026 / Fan Engineering Guides

EC FanGrid Retrofit for AHU: Before & After

An AHU retrofit does not succeed because the old fan disappears and an...

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How to Replace a Fireplace Blower Fan
By longwell / August 21, 2026 / Fan Engineering Guides

How to Replace a Fireplace Blower Fan

Replace a fireplace blower fan safely: identify the circulation blower...

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Furnace Blower Motor Not Working? Diagnose in 5 Steps
By longwell / August 21, 2026 / Fan Engineering Guides

Furnace Blower Motor Not Working? Diagnose in 5 Steps

A furnace blower that will not spin does not prove motor failure. Trac...

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How to Clean a Squirrel Cage Blower (Furnace)
By longwell / August 21, 2026 / Fan Engineering Guides

How to Clean a Squirrel Cage Blower (Furnace)

Clean a furnace squirrel-cage blower safely: identify the wheel, isola...

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Data Center Cooling Redundancy: Test Server Inlet Response After One Module Fails
By longwell / August 21, 2026 / Fan Engineering Guides

Data Center Cooling Redundancy: Test Server Inlet Response After One Module Fails

Test data-center cooling redundancy at representative server inlets af...

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5-Mistakes-When-Importing-HVAC
By longwell / August 20, 2026 / Fan Engineering Guides

5 Mistakes to Avoid When Importing HVAC Fans

5 HVAC Fan Import Mistakes That Cost Buyers | Evidence Checklist - Imp...

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