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.
Speak to our energy saving experts for personalised advice or read our in-depth articles.
