Skip to main content

Note: Seasons Greetings 🎄

Wishing you a safe festive season. We are closed from midday 24 December 2025 - 5 January 2026.

BU698 Residential mechanical ventilation systems (2025)

Product Description

Ventilation is crucial for introducing fresh air from outside to replace stale indoor air and essential for building occupant wellbeing and building material durability. This bulletin covers extract, supply and balanced heat recovery ventilation systems. It updates BU581 of the same name.

Product Information

Publication date March 2025