Domestic Ventilation Systems - a guide to measuring airflow rates (BG 46/2015)

Overview

With the improvements in dwelling airtightness over the past few years, and increased use of systems such as Mechanical Ventilation with Heat Recovery (MVHR), getting the ventilation right in dwellings has become more critical. In 2010, a requirement for mechanical ventilation air flow rate testing in dwellings was written into the England & Wales Building Regulations.

This BSRIA guide was first published in 2013, describing the conditional and unconditional methods of airflow measurement. The 2015 edition also describes a third method, the minimum benchmark method.

Contents include:

• Types of ventilation systems
• Performance requirements
• Design and installation
• Airflow measurement – conditional, unconditional and minimum benchmark methods
• Testing and commissioning

The test work to support the methodology recommended in this guide was undertaken independently by BSRIA. Read report

Get the full set

This guide is available as part of our Residential Buildings set (RBS).  The set includes:

• CIBSE TM60 Good Practice in the Design of Homes
• Building Performance Evaluation in Domestic Buildings (BG 64/2016)
• Domestic Ventilation Systems - a guide to measuring airflow rates (BG 46/2015)

It is also available as part of our Commissioning Air Set of 2 guides (CCA/BG49). The set includes:

• CIBSE Commissioning Code A
• Commissioning Air Systems (BG49/2015)
• Domestic Ventilation Systems - a guide to measuring airflow rates (BG 46/2015)

It is also available as part of our set of 7 Commissioning guides (COMPAK3). The set includes: 

• Commissioning Air Systems (BG 49/2015)
• Commissioning Job Book (BG 11/2010)
• Commissioning Water Systems (BG 2/2010)
• Model Commissioning Plan (BG 8/2009)
• Pre-Commission Cleaning of Pipework Systems (BG 29/2021)
• Domestic Ventilation Systems - guidance for measuring airflow rates (BG 46/2015)
• Seasonal Commissioning (BG 44/2013)