What is BS EN 13141-6-Performance testing of single dwelling exhaust ventilation system about? 
BS EN 13141 is a European Standard that discusses the performance testing of components/products for residential ventilation.
BS EN 13141-6 is the sixth part of the series that specifies test methods on ventilation system package and permits to avoid tests on each component separately.
BS EN 13141-6 specifies laboratory methods for measuring the aerodynamic and acoustic performance characteristics and energy consumption of assembled exhaust ventilation system packages for a single dwelling. If a component of the package is not physically linked to the others (e.g. air inlets), then it is assumed to have been tested according to the test method related to this component.
The object of BS EN 13141-6 is to provide tested characteristics for a ventilation system package in worst-case conditions. It is assumed that better values are achieved on-site when the ventilation system package is installed in accordance with the manufacturer's instruction and within the limits of the test conditions given in BS EN 13141-6
Who is BS EN 13141-6 - Performance testing of single dwelling exhaust ventilation system for? 
BS EN 13141-6 on single dwelling exhaust ventilation system is relevant to: 
- Ventilation and air-conditioning system manufacturers and designers
- Ventilation product/component manufacturers and designers
- Quality control and testing personnel
- Architects and contractors
- Residential building developers and planners
Why should you use BS EN 13141-6- Performance testing of single dwelling exhaust ventilation system?
Indoor air is kept clean and fresh with proper ventilation systems, that ensure that fresh air enters and bad air exits, such that moisture, smells, gases, dust, and other contaminants are removed. For this reason, it is essential that the exhaust ventilation system be tested for optimal performance and effectiveness, to make living spaces comfortable for its inhabitants.
BS EN 13141-6 provides you with best industry performance testing of aerodynamic characteristics, external leakages and electrical power.
By complying with BS EN 13141 on single dwelling exhaust ventilation system, you can ensure your products are fit for purpose and incidents of product failure are minimized.
What’s changed since the last update?
BS EN 13141-6:2014 supersedes BS EN 13141-6:2004. BS EN 13141-6:2014 includes some editorial changes with respect to BS EN 13141-6:2004. These include: 
- Modification of Figure 6 describing the types of long ducts and long branched ducts. It now explains how to deal with long branched ducts on which there are more than 3 spigots
- Modification of Table 1 for the presentation of the aerodynamic characteristics
- Adding in Clause 6 of a procedure for the measurement of the external leakage
- Adding of Table 2 giving a classification of the external leakage
- In Clause 8, adding of a paragraph defining the test conditions and the calculation for the obtaining of the energy efficiency
- In Annex A, modification and explanation of Figure A.1 representing an example of compensating mounting for air flow measurement device.
