Exhaust Fans

Exhaust fans remove moisture, heat, odours and fumes from bathrooms, kitchens, garages, attics and industrial workshops. This tag collects CFM sizing rules, duct-length effects, safe replacement procedure and comparisons of wall, ceiling and roof-mounted LONGWELL exhaust ranges.

Bathroom Exhaust Fan Motor Replacement
By longwell / September 17, 2026 / Fan Engineering Guides

Bathroom Exhaust Fan Motor Replacement

Use a model-locked gate to approve a bathroom exhaust fan motor assemb...

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Commercial kitchen exhaust blower on a roof above a restaurant canopy
By longwell / September 15, 2026 / Fan Engineering Guides

Kitchen & Commercial Range Hood Blowers

A commercial kitchen exhaust system has to capture grease-laden vapour...

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Crawl space ventilation fan installed in a foundation vent
By longwell / September 6, 2026 / Fan Engineering Guides

Crawl Space Ventilation Fan Guide

Ventilating a crawl space sometimes dries it out and sometimes makes i...

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Food truck exhaust hood blower mounted on a mobile kitchen roof
By longwell / September 5, 2026 / Fan Engineering Guides

Food Truck Exhaust Hood Blower

A food truck hood does everything a restaurant hood does, in a fractio...

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Upblast and downblast roof exhaust fans installed on a flat roof
By longwell / September 5, 2026 / Fan Engineering Guides

Roof Exhaust: Upblast vs Downblast

The difference is where the air goes when it leaves. Upblast throws it...

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Poultry & Livestock House Ventilation
By longwell / August 21, 2026 / Fan Engineering Guides

Poultry & Livestock House Ventilation

Why can a poultry house have a full wall of running fans and still lea...

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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...

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LONGWELL top 5 bathroom exhaust fan
By longwell / July 30, 2026 / Technical Articles

Top 5 Exhaust Fans for Bathrooms in 2026: Quiet & Energy Efficient

The bathroom is usually damp and hot, especially those without windows...

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LWPVE-1530T-01
By longwell / July 29, 2026 / Engineering Case Studies

LWPVE-1530T-01 Exhaust Fan for Large Industrial Ventilation

Longwell engineers a 1530mm industrial exhaust fan to deliver 51,000 m...

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poultry fan
By longwell / July 21, 2026 / Engineering Case Studies

LWPVL-1270T Poultry Barn Exhaust Fan for 51,000 m³/h Airflow

Case study on a high-volume ventilation solution for poultry barns, de...

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