Mechanical ventilation with heat recovery (MVHR)
MVHR systems extract stale air from bathrooms and kitchens and pass it through a heat exchanger before exhausting it from the building. The heat exchanger transfers most of the heat from the stale air to the fresh air that is drawn from the outside. This fresh and warmed air is ducted into the habitable rooms such as reception rooms and bedrooms.
MVHR systems are appropriate for buildings that have a high air tightness (Q50 of below 3 m3/m2/h) and have a good thermal performance from the building fabric. Good design of MVHR systems is very important: ducting needs to be sized appropriately so as to reduce any noise from air movements and so that it can adequately cope with overheating in summer.
Hausmate monitors the air quality throughout the buildings with humidity, CO2 and VOC (volatile organic compound sensors). From this information Hausmate controls the central fan and initiates the boost function depending on air quality. In addition most MVHR systems can provide feedback which Hausmate shares across the property, for example filters need changing or other faults with the system. Users can receive notifications via the Hausmate MessageMe service.
Hausmate control of MVHR contributes to compliance with building regulations. Hausmate will ensure that there is a minimum of air flow to satisfy part F of the building regulations, and can switch the fan from constant low speed to boost when moisture or low quality air is detected.
Mechanical ventilation with heat recovery (MVHR) is a whole house ventilation system that both supplies and extracts air throughout a property.