![]() Positive Input VentilationPIV - Low Cost Whole House VentilationA Positive Input Ventilation (PIV) unit is a low cost alternative to MVHR and a more energy efficient option than traditional extract ventilation. By gently supplying fresh, filtered air into your home, taken from either your ventilated attic or an exterior grille, the PIV creates a positive indoor air pressure to 'push' old, contaminated, vapour laden air out of your property, at the same time eliminating cold draughts from trickle vents and other gaps in the building fabric. A PIV will normally resolve any damp and mold issues within weeks if not days providing a healthier, fresher indoor environment.
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