Positive Input Ventilation
How does Positive Input Ventilation work?
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A positive input ventilation unit gently supplies tempered, filtered air into a home using otherwise unused heat within a roof.
The benefits of this are enormous;
The old air exits through the thousands of air leakage points found in all homes. Indeed, positive input ventilation will even help to suppress unwanted infiltration (draughts). The installation of a low energy positive input ventilation unit will ensure the air in your home is completely replaced with better quality air around 20 times a day. This is the recommended rate to maintain good air quality. Energy benefitsYour roof is an energy source.South east to south west facing tiles or slates absorb energy from the sun. Even the loft space itself is a substantial source of energy. During the heating season it will almost always be warmer than outside because of solar gain and conduction and convection losses from the home. Positive input ventilation units use the tiles/slates and/or the loft space itself to pre-warm the incoming air before delivering it into the home. The input air enters your home at ceiling level, usually on your landing. This method re-circluates the warm air that rises and collects there as well as reducing the heat loss to your loft. The slight pressurisation effect created helps reduce infiltration of unheated air through the leakage points found in all homes, having a consequential energy benefit. In simple terms, a good quality low energy positive input ventilation unit will provide a significantly greater amount of energy into the home than the energy it consumes in the form of electricity, providing a considerable net energy gain. |
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Relevant Literature & Documents
  | Brochure: Ventilation Solutions for Apartments and Communal Residences File size: 1.6 MB |
 | Brochure: Ventilation Solutions for the Decent Homes Standard File size: 1.1 MB |
 | Brochure: Ventilation Solutions for Housebuilders and Developers File size: 2.7 MB |
 | Brochure: Positive Input Ventilation Catalogue File size: 2.5 MB |
 | BBA Certificate 00/3727 for Drimaster, Drimaster 3S, Drimaster 2000 and Drimaster 2000 3S Systems File size: 194 KB |
  | Link to page: Best estimates of potential energy savings for Nuaire PIV systems |
 | Link to page: Condensation, Dampness, Must Smells, Black Mould all cured with Nuaire's Whole Home Ventilation systems |
 | Link to page: Residential Product Applications |
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