Duct Fans

Duct fans sit inside the air path and use their static pressure to overcome duct resistance, serving residential fresh air, kitchen and bathroom exhaust and commercial ventilation runs. This tag collects sizing methods, static pressure budgeting, noise control and installation guides with LONGWELL inline and mixed-flow references.

Duct booster fan installed in a branch duct to improve airflow
By longwell / September 6, 2026 / Fan Engineering Guides

Duct Booster Fan: Does It Actually Work?

Booster fans work when the problem is a long branch and fail when the ...

Read More »
Dryer vent booster fan fitted in a long laundry exhaust duct
By longwell / September 6, 2026 / Fan Engineering Guides

Dryer Vent Booster Fan Install

Long dryer ducts strangle airflow, extend cycles and accumulate lint. ...

Read More »
Grow tent inline fan and carbon filter mounted inside a tent
By longwell / September 6, 2026 / Fan Engineering Guides

Grow Tent Inline Fan Setup (Airflow & Odor)

A grow tent fan has to handle heat, humidity and odour at once, and a ...

Read More »
Axial, mixed-flow and centrifugal fan impellers compared side by side
By longwell / September 5, 2026 / Fan Engineering Guides

Axial vs Mixed-Flow vs Centrifugal

Mixed-flow fans sit between axial and centrifugal, delivering roughly ...

Read More »
How-to-Seal-Ducts---Cut-Leakag
By longwell / August 24, 2026 / Fan Engineering Guides

How to Seal Ducts & Cut Leakage

Duct sealing begins by identifying function, not by choosing tape or m...

Read More »
Ducted and ductless ventilation arrangements compared in a kitchen
By longwell / August 22, 2026 / Fan Engineering Guides

Ducted vs Ductless Ventilation

Ductless systems filter and return air rather than removing it. That w...

Read More »
LONGWELL duct fan
By longwell / August 13, 2026 / Technical Articles

6-Inch vs 8-Inch Duct Fan: Choosing the Right Size

In commercial, industrial, and agricultural ventilation systems, a duc...

Read More »
longwell duct fan with speed contoller
By longwell / August 6, 2026 / Technical Articles

Duct Fan with Speed Controller: How Variable Speed Improves Efficiency?

Traditional duct fans always operate at full speed, which results in u...

Read More »
duct fan vs exhaust fan
By longwell / August 5, 2026 / Technical Articles

Duct Fan vs Exhaust Fan: What are the Differences?

Effective ventilation is essential for maintain indoor air quality, co...

Read More »
LONGWELL duct fan
By longwell / July 21, 2026 / Technical Articles

How to Install a Duct Fan: Step-by-Step Guide

The ducts in HVAC systems are usually long. When the airflow goes thro...

Read More »