Positive Input Ventilation (PIV) is a whole-house ventilation system that works by drawing in fresh, filtered air from outside and gently pushing it into the home. This process helps to expel stale, damp air and improve indoor air quality.

PIV systems typically consist of a unit installed in the loft or on a wall, which draws in air from outside, filters it, and then distributes it throughout the house. The continuous flow of fresh air helps to reduce humidity, condensation, and pollutants.

Benefits of PIV include improved indoor air quality, reduced condensation and dampness, lower risk of mould growth, and potential energy savings. PIV systems can also help to reduce allergens and pollutants in the home.

PIV is suitable for most types of homes, including houses, flats, and apartments. However, the effectiveness of the system can depend on factors such as the size of the property, insulation levels, and existing ventilation.

PIV systems are generally energy-efficient. They operate at low power and can help to reduce heating costs by maintaining a more consistent indoor temperature and reducing the need for additional heating.