Modelling confirms Breezway louvres a natural winner

News /
30 October 2012
Modelling confirms Breezway louvres a natural winner
Altair Louvres provide close to 100% natural ventilation.

As electricity prices continue to rise, mixed-mode cooling systems that turn air conditioning systems off and use natural ventilation when appropriate are gaining popularity. In response to concerns from HVAC (heating, ventilation & air conditioning) engineers, Breezway commissioned an independent study to assess the impact of the air infiltration of Altair Louvre Windows on the total annual air conditioning load of a building. The results showed that turning the air conditioning off and using natural ventilation when appropriate far outweighs the benefits of sealing a building up tightly in an attempt to improve the efficiency of air conditioning systems.

The study showed an annual air conditioning load decrease of 23% when Altair Louvre Windows were used to allow cooling natural ventilation.

For more details, a Breezway Technical Bulletin titled “The Impact of Air Infiltration & Natural Ventilation on Annual Air Conditioning Load” is available from the Technical Section of Breezway website.


Breezway manufactures Altair Louvre Windows in glass, timber and aluminium. They are energy and cyclone rated and suitable for multi-storey applications.

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