How it works

Positive input ventilation (PIV)  gently supplies tempered, filtered air into a home using otherwise unused heat within a roof space.

The benefits of this are enormous:

A good quality unit, fitted in your loft, will operate at an almost imperceptible noise level. You will hardly know it’s there. A properly designed and installed unit will ensure that old, contaminated, vapour laden air in your home is continuously diluted, displaced and replaced with good quality air. The result is improved indoor air quality and an environment in which condensation dampness cannot exist. The old air exits through the thousands of air leakage points found in all homes. Indeed, positive input ventilation will even help to suppress unwanted infiltration (draughts). The installation of a  low energy positive  input ventilation unit will ensure the air in your home is completely replaced with better quality air around 20 times a day. This is the recommended rate to maintain good air quality.