Protect your home from condensation and black mould with loft-mounted Positive Input Ventilation (PIV). Installed neatly in the loft, these systems feed a constant stream of filtered, gently tempered fresh air through a central ceiling diffuser—diluting humidity, odours and pollutants while pushing stale, moist air out of the building fabric. The result is a drier, healthier home with clearer windows, fresher rooms and fewer maintenance issues.
Why choose a loft PIV system:
Whole-home coverage from a single landing diffuser
Quiet, energy-efficient EC motors for low running costs
Optional integral heater for comfort during colder months
Smart humidity/temperature control with boost and timer modes
High-grade replaceable filters to reduce dust and allergens
Discreet loft installation with minimal visual impact and easy maintenance
Best placement: first-floor landing or central hallway so clean air can circulate evenly to bedrooms, bathrooms and living spaces.
Browse our full range of loft-mounted PIV units and get expert advice on sizing, siting and controls. Fast delivery and friendly support from ventilation specialists.
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