In 1972, Nuaire invented a cure for condensation dampness in residential properties, and the problems associated with it. Nearly 50 years later, Nuaire’s innovative strategy named Positive Input Ventilation (PIV) is the UK’s most popular method of low-energy whole home ventilation. There are two ranges named ‘Flatmaster’ and ‘Drimaster’, with the first being designed for properties without lofts such as apartments and the latter intended for homes with loft space where the unit is fitted.

Cure condensation dampness and remove pollutants from the home with the low-energy Drimaster range for homes with lofts, or the compact Flatmaster range for homes without lofts.


Ideal for Retrofit Projects

Easy to install and extremely cost-effective to run, this ventilation strategy will create a fresh and healthy indoor environment, curing condensation dampness and drastically reducing the level of Radon gas, allergens and other pollutants that enter the home.

Cost-effective Ventilation for New Build Projects

Easy to install and extremely cheap to run, these energy-saving systems will help you meet current building regulations and ensure a fresh and healthy indoor environment.



New houses are being built with better construction methods and are more airtight, which can lead to condensation dampness and poor indoor air quality if adequate ventilation is not provided. The drive towards more energy efficient homes through building fabric combined with the condensation and pollutants generated from every day activities such as washing, cooking, smoking and cleaning can create poor indoor air quality that is damaging the health of the occupants and the building fabric.

New homes are not alone in suffering from poor ventilation. Many older homes are inadequately ventilated, and often the steps we take to better insulate older homes through installing new windows and adding loft insulation can further decrease the natural ventilation.  Washing, cooking, cleaning and drying clothes indoors all contribute to the creation of condensation and pollutants in the air.

The Drimaster and Flatmaster ranges provide whole home ventilation based on the popular Positive Input Ventilation principle. Essentially, the concept is to introduce fresh, filtered air into the dwelling at a continuous rate, encouraging movement of air from inside to outside. To achieve this, the unit is mounted in the loft space (Drimaster) or in the kitchen or hallway (Flatmaster), drawing air through the filters and inputting it into the property.

A properly installed unit will ensure that old, contaminated and moisture-laden air in your home is continuously diluted, displaced and replaced with good quality, fresh air. The result is an environment in which condensation dampness cannot exist, and where allergens and pollutants are kept to a minimum.

Both PIV ranges are quick, cost-effective and easy to install, making them an ideal solution for both new build and RMI projects.

PIV How it Works


  • The Drimaster range offers whole home ventilation suitable for all properties with a loft space.
  • The Flatmaster range offers whole home ventilation for homes without lofts and can be used to ventilate cellars and basements.


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For more information please contact our dedicated sales team.

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