PIV Positive Input Ventilation
PIV TIPS – Positive Input Ventilation – If you live in a polluted zone, or suffer Hay Fever, then you should consider the merits of filtered air.
PIV
103B: Rental property badly damp proofed, PIV unit condensation
Positive Input Ventilation (“PIV”) often don’t provide sufficient ventilation, typically short circuiting. Example with dripping condensation.