Author: longwell

longwell-lwde-300-spec-sheet-0
By longwell / April 21, 2026 / Engineering Case Studies

High-Pressure Make-Up Air: 300mm EC Circular Duct Fan

Learn how an EC circular duct fan delivers 747 Pa in a tight 255 mm sp...

Read More »
longwell-wi-6975592248-project
By longwell / April 21, 2026 / Engineering Case Studies

Transformer Cooling Fan Replacement for 220V Dry-Type Units

See how we built a 220V transformer cooling fan to replace old GFDD420...

Read More »
longwell-lwce-90360sn-06-proje
By longwell / April 20, 2026 / Engineering Case Studies

Commercial Air Handler EC Cross Flow Fan 640 m³/h

Learn how we sized an EC cross flow fan to deliver 640 m3/h at 1500 RP...

Read More »
longwell-lwfe3g160-092ss-02-pr
By longwell / April 20, 2026 / Engineering Case Studies

Solving an EC centrifugal fan replacement with a 150W cap

Learn how we engineered an EC centrifugal fan replacement to match an ...

Read More »
longwell-wi-6974349832-project
By longwell / April 20, 2026 / Engineering Case Studies

Tube Axial Fan M6 Fastener Replacement Project

An HVAC OEM needed new fan motor mounting hardware to fix severe rust ...

Read More »
longwell-lwce-100820sn-06-proj
By longwell / April 18, 2026 / Engineering Case Studies

1735 m3/h Air Curtain Spec: EC Cross Flow Fan Engineering

See how we engineered an EC cross flow fan delivering 1735 m³/h at 229...

Read More »
longwell-lwcd-43420mg-07-proje
By longwell / April 17, 2026 / Engineering Case Studies

Electronics Enclosure Cooling: Achieving 191 m³/h Under 475mm

Learn how we modified a standard DC cross flow fan with an iron safety...

Read More »
longwell-lw2507100574-project-
By longwell / April 17, 2026 / Engineering Case Studies

24V Chassis Fan: Upgrading to Nitrile Rubber Supports

See how a pure nitrile rubber sleeve stops failures in a DC cross flow...

Read More »
longwell-lwfe3g140-072ns-02-pr
By longwell / April 17, 2026 / Engineering Case Studies

140mm EC Centrifugal Fan Hits 845 Pa for Tight Spaces

A customer needed a 140mm EC centrifugal fan for a tight space. We bui...

Read More »
longwell-wi-6968261568-project
By longwell / April 16, 2026 / Engineering Case Studies

380V Vertical Circulation Fan for Greenhouses

See how we designed a 380V vertical circulation fan to move 5800 m3/h ...

Read More »