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What do the Building Regulations say about ventilation?

UK building regulations.   System 1 emphasizes natural ventilation, aided by intermittent extract fans and background ventilators, aiming to maintain indoor air quality by allowing fresh air to circulate. System 2, also known as Passive Stack Ventilation, was removed from Building Regulations in the 2023 amendment. System 3, previously known as Continuous Mechanical Extract Ventilation […]

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