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Nuaire Flatmaster Positive Input Ventilation System

£274.99 Ex VAT
£329.99 Inc VAT

This PIV system provides whole home ventilation solution for homes without lofts, including basements, cellars and flats. The unit is mounted internally, drawing air through an external wall and inputting into a central corridor or location that allows the fresh air to dissipate around the whole property. 


Nuaire Flatmaster PIV with Boost Switch

The Nuaire Flatmaster Positive Input Ventilator provides whole home ventilation using the 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 Flatmaster PIV unit is mounted next to an external wall and ducted through it, drawing air through the filters and inputting it into a central location such as a corridor to allow the air to dissipate around the property.

The Flatmaster units are fitted with a manual boost switch. This allows the occupier to increase air flow when required e.g. hot summer nights or when a lot of moisture is being created internally.

The Flatmaster PIV system has various speed settings so you can set it to a speed that suits each property. Once set, the unit can be left to continuously introduce clean fresh air into the property eliminating condensation and creating a fresh, healthy indoor environment for the occupants.

This Nuaire Flatmaster is supplied WITHOUT a heater element and can be installed with the inlet in either side of the unit. If you require a heated version please see the Flatmaster 2000.

The Flatmaster positive input ventilator can be installed with both 100mm round duct and 121mm x 60mm rectangular duct available from most DIY stores.

What's in the box:

  • Nuaire Flatmaster Positive Input Ventilator
  • Deflector Plate for right or left installation
  • 2 x Spigot insert round (100mm)
  • 2 x Spigot insert rectangle (121mm x 60mm)
  • 1 x Blanking Plate

You will additionally require:

  • External vent to suit pipework
  • Internal vent to suit pipework
  • Pipework/ ducting and connectors 
  • Wall fixings suitable for the back ground substrate

Nuaire Flatmaster Benefits:

  • Cures condensation dampness - PIV systems reduce the humidity in the air, curing condensation dampness and preventing mould growth
  • Improved indoor air quality and healthy living environment- Indoor pollutants from cooking and cleaning, as well as outdoor pollutants including traffic fumes, pollen and Radon gas are eradicated from the home
  • Very low maintenance - Filter clean or replacement every 18 months
  • Extremely energy efficient - As low as 3 watts (1 pence a day)
  • Health benefit - Clinically proven to help allergy and asthma sufferers
  • Meets Regulations - Meets Part F & L of Building Regulations as a low-energy ventilation strategy
  • 5 Year Warranty: 1 year parts and labour, remaining 4 years parts only


Nuaire Flatmaster Installation:

Nuaire Flatmaster Installation detail


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If you have any questions about the Flatmaster PIV unit, Nuaire products or ventilation in general then please contact our expert technical team. We are always happy to help. Call 0117 982 3282. 


Browse our full range of PIV units, explore the Nuaire PIV range or check out all of our condensation control products.

Read our guide on how to get rid of condensation in your home with ventilation.  


  • BBA Approved
  • Cures condensation dampness 
  • Improved indoor air quality and healthy living environment
  • Easy & simple installation
  • Very low maintenance
  • Extremely energy efficient
  • Health benefit
  • Meets Regulations
  • 5 year warranty
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