There must be windows, skylights or doors that open to the outside in the living room, dining room, kitchen and bedrooms. These must be able to be fixed in the open position and comprise at least five per cent of the room’s floor area. There must be extractor fans in kitchens and bathrooms that vent to the outside.
Kitchens – In any room with a cooktop, new fans or rangehoods installed after 1 July 2019 must have a minimum diameter (including ducting) of 150mm or an exhaust capacity of at least 50 litres per second.
Bathrooms – In any room with a shower or bath, new fans installed after 1 July 2019 must have a minimum diameter (including ducting) of 120mm or an exhaust capacity of at least 25 litres per second.