Description

This bulletin looks at residential mechanical ventilation systems, including supply, extract and heat recovery ventilation systems.

Scope

The bulletin covers:

• infiltration and airtightness
• need for ventilation
• ventilation rates
• mechanical ventilation
• supply systems, including operation, components, supply air and roof space air-sourced positive pressure systems
• extract systems, including fans, ducted extract systems, extract air location and discharge air location
• mechanical ventilation heat recovery systems
• ducting
• choosing a ventilation system
• maintenance.