In small homes, an HRV might consist of a single unit on one wall that effectively ventilates the entire building over time as doors open and close between rooms. In larger homes and offices, there may be ventilation grids in each room feeding into ducts that run between the floors or ...
How does Mechanical Extract Ventilation work? A Mechanical Extract Ventilation (MEV) system provides continuous extraction of stale, moist air from all wet rooms within the home, such as bathrooms, kitchens and utility rooms. The single, low energy fan unit is typically installed in the loft spac...