Efficiency
Air Quality & Ventilation (MVHR) Feature
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Compounds (VOC), radon, and carbon monoxide. Mechanical Extract Ventilation (MEV) further removes this polluted air from the property and brings in fresh air. Furthermore, mechanical ventilation units can recover otherwise lost heat
from the extracted air to ensure that the fresh input air is brought in at room temperature. These units are known as Mechanical Ventilation with Heat Recovery, or MVHR. For an alternative approach to ventilation, there is also the Positive
Input Ventilation (PIV) strategy. The unit can be discreetly installed into a loft of a house or into the ceiling void of an apartment building. PIV gets its name by the way it works, which is to pressurise the home through the introduction of fresh, filtered air and pushing out the humid, stale air that has built up in the home. Today, ventilation units can be equipped with additional filters, such as
activated carbon, HEPA, and ePM (Particulate Matter), to provide extra decontamination levels to the property. They are designed with energy efficiency in mind, to run at reduced costs for the occupant while considering the impact on the environment. To combat the threat of climate change and comply with national statutory
standards, a substantial reduction of greenhouse gas emissions needs to be made. To achieve this, significant improvements must be made to the energy efficiency of the UK’s building stock, specifically the vast majority of its 27 million domestic buildings.
Good ventilation is critically important to the health of the property and its inhabitants
Under PAS 2035, existing ventilation will be considered inadequate for the improved dwelling if one or more of the following is apparent:
There is evidence of condensation and/or mould growth in the dwelling There is no ventilation system, or the ventilation system is incomplete or not functional
There are no undercuts of at least 600mm2 beneath all internal doors and above the floor finish to allow air to move through the dwelling
There is no provision for purge ventilation of each habitable room (e.g. by opening windows)
To help mitigate these risks and ensure healthy living environments for years to come, it is essential to ensure that the right ventilation product has been installed into the building by a professional.
Richard Jenkins is residential NPD manager at Nuaire 40 | HMM August/September 2021 |
www.housingmmonline.co.uk
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