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Thu Nov 3, 2016

Last week’s sixth annual UK Passivhaus Conference and Expo, held at The Business Design Centre in London, confirmed growing interest in the Passivhaus standard by being the best-attended yet. Of the many stands in the exhibition area, one of the most popular was Zehnder’s, where the company showed its new ComfoAir Q range of MVHR units and the ComfoFresh air distribution system.

The new ComfoAir Q heat recovery system, which was recently awarded Passivhaus certification, is the most energy efficient and one of the quietest on the market. The ComfoFresh system provides a range of semi-rigid ducting solutions, with radial design for better pressure handling and reduced noise levels, essential for MVHR system installations.

Organised by the Passivhaus Trust, the Expo was open this year to the public while the Conference featured an insightful programme of seminars, case studies and mini-masterclasses for architects, designers, specifiers and clients. One message that echoed throughout the Conference was the importance of considering the practicality of MVHR systems at the design stage in order to ease the later processes of construction and installation.


Consistent with this theme, Zehnder emphasised at the Expo why MVHR must be regarded as a whole-system solution. Ducting and other components, which can significantly affect noise levels and performance, are as important as the MVHR unit itself. By taking this holistic view, MVHR should be as easy to specify in a new home as calculating, designing and installing a central heating system. To that end, the ComfoAir Q was designed to enable easy on-site installation, to ensure optimum performance can be achieved first time, and to prevent any post-installation issues.

ComfoAir Q achieves up to 96% heat recovery, providing greater savings than any other currently available MVHR system to homeowners’ energy bills, and accomplishes this so quietly that one comparable MVHR unit emits the same volume of noise as eight ComfoAir Q units! These benefits are essential in modern homes which, being airtight to conform to stringent energy-efficiency regulations, depend on the best choice of heating and ventilation system to maintain a comfortable and healthy indoor environment with fresh air 365 days a year.

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