Maestro Roof Ventilator

Ventilation just got smarter! 

Maestro BAL now features Bradford Ventilation's new smart ventilation technology, Air iQ.

Maestro BAL is set to a powerful fixed speed for continuous, high performance ventilation. It also includes a built-in Air iQ smart box that can automatically detect heat and humidity to protect the home when it matters most.* By ventilating with Maestro BAL you can reduce summer temperatures inside the roof and minimise condensation formation which can result in mould growth or structural decay of roof timber.

Maestro BAL is a powerful, mechanically driven ventilator that continuously and reliably improves the comfort and health of your home all year round. In addition, Maestro BAL is assessed by the CSIRO to be compliant with the fire rating requirements of AS3959-2009 up to BAL-40.

The high quality aluminium-based ventilator is preset to a continuous fixed speed and offers four additional speed settings (automatic, low, medium and high) to manage excess heat and dampness in the roof space, providing a more comfortable and healthier home while complying with ventilator requirements for bushfire areas.

The maximum flow rate of the Maestro BAL is equivalent to six wind driven vents and can be used on a continuous and reliable basis, without reliance on wind.

The quiet motor and low cost to run make this ventilator a valuable addition to the comfort level in your home. In addition, Bradford Ventilation's partnership with Sensitive Choice (National Asthma Council) shows the support for Maestro BAL as a provider of better quality air, especially for those suffering from asthma and allergies.

How many Maestro BALs do I need?
A single Maestro BAL can be sufficient to ventilate roof spaces up to 127m2. Ultimately, the number of ventilators you will need will depend on the size and pitch of your roof space. For detailed information, refer to our Product Technical Statement under the Downloads section, or contact the Bradford Ventilation team and we can help you with a solution custom to your needs. 

*Operating mode preset to fixed speed for NCC2019 compliance. For more information on how to activate Air iQ and alternate settings, refer to the Product Manual.

Features & Benefits


  • Bradford Air iQ smart box automatically detects and removes heat and humidity*. 
  • Rated upto BAL-40 (AS3959-2018)
  • Stainless Steel ember guard
  • Maximum flow rate of 596m3/hr
  • Powerful fixed and variable speed options available for high performance ventilation.
  • Can be fitted with ducting and a ceiling grille in specific rooms in the home (not supplied with Maestro BAL)
  • Aluminium construction in eight colours
  • High efficiency 24V DC motor
  • Two year warranty on the body and motor, and one year on the power pack and speed controller


  • When activated, Air iQ automatically detects then removes heat and humidity from the roof space
  • Preset to a powerful fixed speed for continuous, high performance ventilation
  • Ideal for homes in bushfire rated areas
  • Prevents against burning embers entering the roof
  • Effective ventilation in most climates
  • Removes heat load in warm months and reduces condensation in the roof space in cool months
  • With ducting and a ceiling grille, moisture can be removed from rooms, like bathrooms and laundries
  • Complements most metal or tile roofs
  • Quiet operation, low running costs and reduced energy usage
  • Improves air quality
Installation guidelines