Technical Guidance - Designing and implementing a robust MVHR system

Mechanical Ventilation and Heat Recovery (MVHR) is likely to become increasingly common in UK developments. As building regulations demand better air tightness and lower energy consumption then sufficient ventilation and recovering heat from exhausted air will become more and more important.

The success of MVHR in maintaining good indoor air quality, efficiently and without undue disruption to building occupants, rests on the integrity and robustness of the design, installation and commissioning of the system. Poorly designed or maintained systems are noisy, inefficient and will not perform as intended. However, if quality control and qualification procedures are well regulated, MVHR can be used as a robust and effective ventilation system. 1

Since MVHR is a relatively new technology in the UK, we have put together some guidelines for good design and installation of an MVHR system based on our experiences and research.

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