QVFH unit is designed for use in hotel bedrooms, individual hospital wards and cellular offices. The QVFH unit ensures good indoor air climate while the noise level is very low. It provides high cooling capacity through optimal utilisation of its cooling coil already while the air pressure and airflows are low. The required primary volume flow for fresh air is supplied through a duct into which nozzles are fitted. As a result secondary air is induced through a horizontal water coil for heating or cooling, or heating and cooling. At the same time, the installation height of the product is kept at an absolute minimum which enables maximum room height in e.g. the entrance to a hotel room.