Product Details
More than 27 times as efficient (extraction of air measured in L/s), as a standard Whirlybird vent under the same wind conditions, and zero sun. Up to 27 times more efficient when the sun is shining (in litres/s extracted).
The iSwirl roof vent is beneficial to all homes. With higher energy prices and global climate change we all need to keep our homes cooler in summer and damp free in winter. The iSwirl achieves this in a vastly more efficient way than standard whirlybirds.
iSWIRL roof ventilator has the following benefits:
- Reduces heat build-up in the roof space
- Saves on energy that would be used by air conditioning or conventional electric fans
- Promotes fresh air circulation and the avoidance of mould build up
- Good ventilation in the roof cavity prevents dampness and damage to roof timbers and the formation of mildew.
- Ceiling insulation is less efficient when damp and adds to heating costs
How does the iSwirl work?
- Hot, moist and damp air sits in the roof cavity space.
- A solar panel on the top of the unit powers a motor that is attached to a fan blade below the wind vanes. During sunlight conditions this creates significant upward force for hot and moist air to escape the roof cavity.
- During wind conditions the wind vanes rotate causing a negative air pressure in the iSwirl. This pressure pulls hot and moist air out of the roof cavity.
- The rotating fan and the vanes combine to create maximum upward pressure to extract hot and moist air from the roof.
- Cool and fresh air replaces the unwanted air in the attic space.
- The home is cooled due to the removal of the hot air which is replaced with cooler fresh air.
It is this combination of solar power and wind that is unique to iSwirl, offering far more efficient and effective air extraction than conventional whirlybird systems. The iSwirl offers the following additional benefits:
- Runs energy free.
- Tested to AS/NZS 4740 - Natural Ventilators.
- Eco friendly.
- Variable pitch for different roof angles.
- Solar drives internal fan.
- Reduces load on air-conditioning, so lowers energy bills.
- Suitable for metal and tiled roofs.
- Easy installation, only one tile needs to be removed.
- Manufacturer Warranty
Comparison of iSwirl compared to standard whirlybirds:
FAQs
Dual-powered systems have wind-driven vanes that rotate when there is sufficient wind blowing. The spinning wind vanes allow hot and/or stale air to escape through the throat of the vent more effectively when the wind vanes rotate. The integrated solar panel powers an internal fan when there is sufficient sunlight. If no wind is blowing then the fan blade, powered by the solar panel, in the throat of the vent drives hot and/or stale air out through the throat. If there is sunlight and wind, then the system operates at its most effective and the volume of hot and stale air extracted is significantly enhanced compared to only wind or only solar. Of course, the system operates when there is no wind and sun, or no sun and wind. So, it provides the best of both worlds as well as being significantly more effective when there is a breeze and sun. The dual operation of wind vanes and internal fan blade when operating in combination, increase the amount of airflow through the vent dramatically. This has been measured to be 30 times more effective under test conditions. The practical outcome is fewer hot spots and less moisture build-up.
A solar panel, an internal fan and motor, wind vanes or turbine housing, a weatherproof mounting throat, and flashings or seals for a waterproof installation are all common components of a dual-powered roof ventilator. While the wind turbine offers passive extraction and can help the fan during gusts, the solar panel uses sunlight to power the fan. The motor and bearings control the fan's noise profile and efficiency. Proper flashing and seals secure roof compatibility with tiled or metal roofs and prevent leaks. These components together enable the continuous extraction behaviour that defines hybrid roof vents.
By harvesting sunlight during clear periods and using wind-driven turbine action during breezy conditions, a dual-powered ventilator sustains extraction when one resource wanes. The system’s complementary action means that cloudy but windy days still see passive turbine extraction, while calm sunny days rely on the solar-driven fan; this redundancy produces predictable ventilation across typical weather patterns. Less time spent in the attic and a lower chance of condensation cycles that result in the growth of mould are the practical advantages for homeowners. Setting reasonable expectations for performance in various local climates is made easier by being aware of these circumstances.
In regions with high levels of sun exposure or sporadic wind, dual-powered vents are beneficial when attic heat or moisture is a recurring problem. In addition, the amount of hot air that is extracted is enhanced substantially. They tend to save energy by lowering the demand for air conditioning and lowering the risk of mould growth by extracting moisture steadily. Payback is dependent on climate, attic condition, and local energy costs; therefore, homeowners should think about doing a basic audit to determine the possible savings. In many properties, this combination will enhance the amount of air extracted and cool a home substantially.
iSwirl can be installed on most roof types. It is easily installed on metal or tiled roofs. It comes with roof flashing which ensures that there is no water penetration into the roof once installed. The roof flashing is made of zero tempered aluminium that is molded to the shaoeof the roof. Installation is straightforward and detailed instructions are avialable.
Warranty Details
For full warranty details, please view our warranty card PDF by clicking below