Swedish Cowl

The primary role of a Swedish cowl is to prevent rain from entering back into the ducting system, however, Swedish cowls are a preferred termination method by the HSE in most fume extraction systems. As a lot of the fumes vented through an LEV system the HSE state must be vented to a safe area. Although all systems may vary generally a vertical discharge at a high level is required to ensure the fumes are taken away in the air stream and cannot cause a health issue or nuisance to any people or adjacent buildings.

A Swedish cowl is often used in areas experiencing high winds, helping to protect from backflows. Also referred to as a jet cowl, they help to boost the extraction of smoke and fumes and while preventing wind, rain from entering the ducting.

Used in both commercial and domestic environments, this duct cowl helps to enhance a systems performance and extends its lifespan. If you are looking for specific sizes of ducting cowls, we invite you to browse through our Swedish cowl selection or speak to one of our team members for a sound consultation about the ideal solution for your ducting and ventilation needs.

Ensure superb airflow through your system without succumbing to outside factors such as wind, rain, snow and more. These cowls also withstand extreme temperatures, making them a durable and lasting solution to your needs.

FAQs About Swedish Cowls

What is a Swedish cowl?

A Swedish cowl is a vertical discharge designed to terminate a duct that is blowing air from a building's extraction system, specifically designed to improve airflow and prevent downdrafts through the ducting system. Named for its popularity in Scandinavian design, the cowl is shaped to enhance ventilation, allowing smoke and fumes to exit smoothly while preventing wind and rain from entering the ducting. Often made from galvanised steel or stainless steel, Swedish cowls also help reduce drafts indoors and improve overall efficiency. This cowl style is popular in areas with frequent winds and helps protect against backflow, enhancing the ducting systems performance and extending its lifespan.

What are Swedish cowls used for?

Swedish cowls are used as a vertical discharge termination for extraction systems venting at high level.

How does a Swedish cowl work?

A Swedish cowl has an internal inverted cone that collects any rain entering the ducting, this then runs through a pipe and is discharged externally to the Swedish cowl.

What are the benefits of using a Swedish cowl?

Using a Swedish cowl offers several benefits: it boosts the efficiency of ventilation and LEV systems by enhancing airflow, which helps remove smoke and fumes effectively. Its design prevents downdrafts, stopping air from re-entering the building.