澳大利亚悉尼及其他城市的高层公寓因采用小窗口设计而面临严重通风不足问题1。这些公寓受到安全法规限制，窗户开启幅度仅为125毫米1，导致实际通风面积远低于建筑规范要求。根据现行标准，建筑通风面积需达楼层面积的5%1，但小窗口虽被计入该比例，实际提供的通风面积仅约为0.5%1，严重影响公寓住户的生活质量。
悉尼委员会已向澳大利亚建筑规范委员会提出修订国家建筑规范的要求，建议改为按有效开启面积而非窗框面积来计算通风标准1。同时提议采用百叶窗等替代方案以提高通风效率，这类方案可将通风效率提升5至6倍1。这一问题反映了两类房主之间的差异：拥有通风良好独栋住宅的业主与面临通风不足困境的公寓住户1。建筑师Matthew Allen指出，"习惯而非规定是呼吸公寓的障碍"1。
High-rise apartments across Sydney and other Australian capital cities face inadequate ventilation due to restrictive window designs, creating disparities between apartment dwellers and detached home owners.1 Building codes require ventilation openings equivalent to 5 percent of floor area, yet safety regulations limit windows to open only 125 millimeters—roughly the size of a child's head—resulting in actual ventilation of approximately 0.5 percent despite windows being counted toward the 5 percent requirement.1
The issue stems from how building regulations measure ventilation based on window frame area rather than effective opening area.1 Sydney's local council has requested that Australia's Building Codes Committee revise national standards to assess ventilation by actual open space instead of frame dimensions.1 Alternative solutions such as louvered windows could increase ventilation efficiency by five to six times, according to proposals under consideration.1 Architect Matthew Allen has noted that "habit rather than regulation is the barrier to breathing in apartments," highlighting the complex nature of the problem.1
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