Rebecca Foster
This illustration from Envirovent shows the airflow in an MEV system. The stale air is drawn into the central unit and expelled to the exterior of the house
The drive to create a super-insulated, airtight house sits at the top of many self builders’ priority lists. However, good ventilation is also important, and is a vital factor in establishing a healthy living environment. “Poor air quality can lead to a multitude of issues within the home, including a high level of humidity that leads to condensation, the growth of damp and the accumulation of unpleasant smells,” says Tim Bartlett, director at CVC Direct.