PIV Units

Browse our range of PIV units designed to support positive input ventilation in homes and residential properties. PIV systems work by introducing fresh, filtered air into the property, helping to improve airflow and reduce the conditions that can contribute to condensation, damp and poor indoor air quality.

At BPC Ventilation, we supply loft-mounted and wall-mounted PIV units from trusted brands including Nuaire, Vent-Axia and S&P. Our team can provide technical advice to help you choose a suitable PIV unit for your property, installation location and ventilation requirements.

Frequently Asked Questions

What is a PIV unit?

A PIV unit, or Positive Input Ventilation unit, introduces fresh filtered air into a property to help improve airflow and support better indoor air quality.
How does a PIV unit work?

A PIV unit gently supplies filtered air into the home, usually from a loft space or external wall. This helps dilute stale, moisture-laden air and encourages air movement through the property.
Can a PIV unit help with condensation?

Yes, a PIV unit can help reduce the conditions that lead to condensation by improving airflow and reducing excess moisture build-up. However, condensation can also be affected by heating, insulation, extraction and property condition.
Do PIV units need filters?

Yes, many PIV units use filters to help clean the incoming air. Filters should be checked and replaced according to the manufacturer’s guidance to maintain performance.
Is PIV suitable for flats or apartments?

PIV may be suitable for some flats and apartments, but installation depends on the available air source, property layout and ventilation requirements. A suitable unit and installation method should be selected for the individual property.