iSwirl 450 Industrial / Commercial Roof Ventilator

iSwirl 450 Hybrid Solar + Wind Industrial Roof Ventilator

The world's first hybrid solar + wind industrial roof ventilator

The iSwirl 450 is a unique hybrid ventilation system designed for warehouses, factories, manufacturing facilities and other industrial and commercial buildings.

Developed through a collaboration between iSwirl and Ampelite, the iSwirl 450 combines conventional wind-driven ventilation with independent solar-powered mechanical extraction.

The result is improved airflow performance, particularly during periods of low wind when conventional rotary ventilators are least effective.

Key Benefits

• Hybrid Solar + Wind Technology
  Two independent ventilation systems working together.
• Enhanced Low-Wind Performance
  Designed to improve ventilation during periods of low natural airflow.
• Up to 2× Higher Airflow*
  Independent testing demonstrated up to 99% higher airflow compared with the Standard SV450 under nominal operating conditions.
• Up to 34× Greater Extraction*
  Independent testing demonstrated significantly greater extraction in very low wind conditions.
• No Mains Electricity Required
  The internal fan is powered by an integrated 50W solar panel.
• No Electricity Running Costs
  Solar and wind operation means no mains electrical connection or associated electricity consumption.
• Australian Designed & Manufactured
  Developed specifically for industrial and commercial roof ventilation applications.

*Independent testing under specified test conditions. Actual airflow varies according to operating and installation conditions.

1. Independently Tested Performance

The performance of any roof ventilator varies according to factors including wind speed, temperature differential, stack height, pressure differential and building configuration.

The iSwirl 450 has been independently tested against the Standard SV450 under comparable operating conditions.

Airflow Comparison

At a 3m stack height under nominal operating conditions, independent testing demonstrated up to 99% higher airflow — approximately 2× the airflow of the Standard SV450.

Exceptional Low-Wind Performance

The benefit of hybrid wind + solar technology becomes particularly significant when wind speeds are very low.

Independent testing demonstrated that the iSwirl 450 can provide up to 34× greater extraction in very low wind conditions compared with the Standard SV450.

This is important because conventional wind-driven roof ventilators can deliver very little extraction during low-wind periods — potentially when ventilation is most needed.

*Performance results relate to the specified independent test conditions and should not be interpreted as guaranteed airflow under every installation or operating condition.

2. Why Hybrid Solar + Wind?

Traditional industrial roof ventilators rely primarily on wind. When wind velocity falls, their ventilation performance also falls.

The iSwirl 450 combines two independent ventilation systems:

Wind drives the ventilator whenever natural airflow is available.

Solar powers an internal fan whenever sufficient solar energy is available.

When both are available, the two systems work together to provide enhanced extraction.

This allows the iSwirl 450 to maintain more effective ventilation across a wider range of operating conditions — without requiring connection to mains electricity.

3. How Many iSwirl 450s Do I Need?

Ventilation requirements vary according to building size and volume, roof height and configuration, internal heat loads, available make-up air and the ventilation objective.

For preliminary planning, the following guide provides a practical starting point.

Quick Selection Guide

Simple Rule of Thumb

For a typical warehouse or industrial building, allow approximately 1 × iSwirl 450 per 100 m² of floor area as a preliminary design starting point.

Indicative range: 1 unit per 75–150 m², depending on building configuration, heat load and ventilation objectives.

This guide is intended for preliminary selection only. Final ventilation requirements should take account of the particular building, application, relevant standards and project requirements.

4. Higher Performance. Fewer Roof Penetrations.

Higher airflow from each ventilator can potentially reduce the number of roof penetrations required to achieve a comparable level of ventilation.

The following comparison demonstrates the relative extraction capacity of the iSwirl 450 and Standard SV450. It is not a recommended ventilator quantity for a 1,500 m² building. For preliminary project sizing, refer to the Quick Selection Guide above.

Illustrative Performance Comparison

For a 1,500 m² industrial facility with a 3m effective stack height:

Under these specific assumptions, 9 iSwirl 450 units provide approximately the same total extraction capacity as 18 Standard SV450 units.

This demonstrates the potential to achieve comparable ventilation capacity with approximately 50% fewer roof penetrations.

Why Fewer Roof Penetrations Matter

• Lower installation costs
• Fewer roof penetrations
• Reduced installation time
• Lower ongoing maintenance
• Cleaner roof appearance
• Greater design flexibility

Engineering Note: This example is illustrative and demonstrates the relative reduction in ventilator numbers based on the stated airflow conditions. It is not intended as a project-specific ventilation design. Final ventilator quantities should be determined according to the building, application and applicable design requirements.

5. iSwirl 450 vs Conventional Industrial Ventilation

6. Designed for Industrial & Commercial Applications

The iSwirl 450 is suitable for:

• Warehouses
• Manufacturing facilities
• Distribution centres
• Agricultural buildings
• Commercial buildings
• Other large industrial facilities

It is designed to provide effective ventilation where improved airflow, heat extraction and moisture control are important.

7. Key Specifications

• Head diameter: 650mm
• Throat: 450mm
• Overall height: 405mm
• Throat height: 280mm
• Flashing: 740mm × 640mm
• Roof pitch: 1–30° maximum
• Solar panel: 50W
• Motor: 24V brushless
• Power source: Solar + wind
• Net weight: 14.5kg
• Packaged weight: 18.5kg
• Mains electricity: Not required
• Installation: In accordance with applicable installation requirements and HB39

8. Common Questions

Solar + Wind = Superior Ventilation

The iSwirl 450 brings together Ampelite's experience in industrial roof ventilation with iSwirl's patented hybrid wind + solar technology.

The result is a high-performance industrial roof ventilator designed to deliver:

Higher airflow. Better low-wind performance. No mains electricity. And potentially fewer roof penetrations.

Need Help With Your Project?

Provide us with your building dimensions, approximate roof height, building use and location and we can help determine an appropriate preliminary number of iSwirl 450 units.