Positive Input Ventilation PIV

Positive Input Ventilation is the most effective method of curing and preventing condensation dampness. Installed in over 1 million homes, PIV is the UK’s most popular method of low-energy, whole-home ventilation.

Invented by Nuaire in the 1970s, this enduring ventilation strategy has since become an industry staple. Nuaire’s market-leading Drimaster PIV range is trusted by social housing providers, new build developers and private landlords as a cost-effective, whole-house system that really prevents condensation and black mould from damaging homes and the health of occupants.  

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How It Works

In 1972, Nuaire invented a cure for condensation dampness in residential properties and its associated problems. Nearly 50 years later, Nuaire’s innovative strategy - Positive Input Ventilation (PIV) - is the UK’s most popular method of low-energy whole home ventilation.

Nuaire’s market- leading Drimaster-Eco range is designed for 2 and 3 storey homes with lofts, while the Flatmaster is designed for flats, apartments and basements. Both ranges are quick, cost-effective and easy to install and maintain, making them an ideal solution for both new build and retro-fit applications.

PIV is a fit-and-forget technology that requires minimal energy to run and minimum effort to maintain. The PIV strategy, also known as an Alternative System within Part F of building regulations, works by gently introducing fresh, filtered air into the dwelling ensuring that old, contaminated moisture laden air is continuously diluted, displaced and replaced with good quality air. The result is improved air quality and a healthy living environment in which condensation cannot exist.

Both Drimaster-Eco and Flatmaster PIV ranges are quick, cost-effective and easy to install, making them an ideal solution for both new build and retrofit applications.


Ideal for repairs and maintenance

Without adequate ventilation, the moisture produced by washing, cooking and bathing remains trapped inside. Modern lifestyles, energy-efficiency measures such as wall and loft insulation, and the rise in energy prices all contribute to the problem. Added to this indoor pollutants such as burning fuel, using cleaning and beauty products create an environment that can be harmful to our health. The Drimaster-Eco range provides a long-term solution that is easy to install in existing homes and uses very little energy.


Cost-effective Ventilation for New Build Projects

Positive Input Ventilation is a popular method of ventilating new build homes. This ventilation strategy is supported by a BBA certificate and recognised as an alternative method within building regulations. The Drimaster-Eco range is an extremely cost effective ventilation solution that offers unique benefits when installing and commission the units. PIV is also recognised as a method of reducing harmful levels of radon gas levels in affected areas





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Positive Input Ventilation - DRI-ECO-HC


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PIV - DRI-365


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PIV - Flatmaster


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PIV Flatmaster 2000

Flatmaster 2000

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