Drimaster-Eco Positive Input Ventilation (PIV) ventilation systems are the most effective method of curing and preventing condensation dampness. Recommended for planned and reactive ventilation servicing, essentially the concept is to introduce fresh, filtered air into the dwelling at a continuous rate, encouraging movement of air from inside to outside. To achieve this, the unit is mounted in the loft space, drawing air through the filters and inputting it, at ceiling level, into the property. Suitable as a social housing ventilation solution, we have 7 different model types, starting with our basic model below that have been designed for occupant preference and house type.