Amenity Light

Positive Input Ventilation (PIV) fans provide an effective way to improve indoor air quality in residential buildings. Typically installed in lofts, PIV units supply filtered and tempered air to create a gentle positive pressure, which helps displace stale and humid air. This reduces condensation, mould growth, and pollutant levels, leading to healthier living conditions.

PIV fans are widely used in retrofit housing projects as well as new builds, supporting compliance with Approved Document F and contributing to energy efficiency under Approved Document L. They are often specified to help landlords and housing providers address condensation issues and improve occupant health and comfort.

Modern PIV units in line with Ecodesign requirements use efficient EC motors, offer summer bypass and multiple speed settings, and may include optional heater batteries or integrated humidity/CO₂ sensors. These features allow the units to adapt to seasonal changes and occupancy levels.

Commissioning of PIV systems involves confirming correct installation, testing electrical safety, verifying airflow levels, and ensuring draught-free distribution. Maintenance typically involves replacing filters, inspecting optional heater elements, and following the O&M manual to meet inspection requirements.
When correctly specified and maintained, PIV fans offer long-term benefits to homeowners, landlords, and social housing providers, including low running costs, improved indoor air quality, and support for Building Regulations compliance.

Purpose of PIV Fans:
Positive Input Ventilation (PIV) fans are designed to improve indoor air quality in residential properties by introducing a continuous supply of filtered air, typically from a loft space. This creates a gentle positive pressure inside the dwelling, which helps drive out stale, humid, or polluted air through natural leakage paths and background ventilators. The core purpose of PIV is to reduce excess moisture and pollutants that can otherwise lead to condensation, damp, mould growth, and poor air quality. By maintaining steady air movement, PIV units support compliance with Approved Document F (Ventilation) of the Building Regulations and can form part of a wider ventilation strategy in both new-build and retrofit housing.

Benefits of PIV Fans:
The benefits of PIV systems are wide-ranging for both occupants and property owners. For residents, the most immediate advantages include healthier indoor environments, reduced risk of respiratory issues linked to damp and mould, and improved comfort through fresher air and reduced humidity. For landlords, housing associations, and homeowners, PIV offers a cost-effective, low-maintenance solution to persistent condensation and mould problems that can damage building fabric and finishes. Modern PIV units are energy-efficient, often incorporating EC motors, automatic controls, and features such as summer bypass and optional heaters, ensuring low running costs while adapting to seasonal conditions. Overall, PIV fans deliver long-term value by safeguarding both occupant health and property condition while supporting energy and ventilation compliance obligations.

An Amenity Light is a durable luminaire designed for communal or public areas, offering reliable illumination and enhanced resistance to damage.

They are commonly installed in stairwells, corridors, entrance areas, car parks, walkways, and shared residential spaces.

Yes. Inbuild UK’s Amenity Lights use LED technology, providing high efficiency, low power consumption, and long operational life.

Yes. Emergency versions are available to ensure continued illumination during power failure, helping maintain safe evacuation routes

Yes. Many Amenity Lights are supplied with IP-rated protection, making them suitable for external environments.