Ventilation for buildings. Performance testing of components/products for residential ventilation. Aerodynamic, electrical power and acoustic performance of unidirectional ventilation units|Aerodynamic characteristics, Extract ventilation, Air-distribution systems, Flow measurement, Ventilation, Buildings, Flow rates, Domestic facilities, Fans, Acoustic measurement, Extraction fans, Ventilators, Thermal environment systems, Performance testing, Ventilation equipment, Power measurement (electric), Acoustic testing