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Positive Input Ventilation (PIV)

Positive Input Ventilation (PIV) work as a whole house ventilation system and create fresh and healthy living environments by supplying fresh, filtered air into a property at a continuous rate throughout. 

PIV is required when:

You don't want to do a full renovation.

You require a whole house ventilation solution.

You don't want to remove any walls or go back to brickwork.

Positive Input Ventilation PIV circulates filtered air throughout a property

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ATMOS<sup>®</sup> Air


ATMOS<sup>®</sup> Dual


ATMOS<sup>®</sup> Air Dual

ATMOS® Air Dual

ATMOS<sup>®</sup> for Flats & Apartments

ATMOS® for Flats & Apartments

How Does PIV Work? chevron

PIV ventilation units work by drawing in fresh, filtered air into a property from outside. These can be either installed in a loft space or on a wall in a flat or apartment. They ensure that a continuous supply of air is supplied into the home to eliminate or significantly reduce condensation. 

To find out more about how PIV works, please watch this video.

Are PIV Units Noisy? chevron

All of our PIV units are designed to perform with extremely low noise levels, always ensuring the best level of ventilation is maintained. 

How Effective Are PIV Units? chevron

Positive Input Ventilation is a whole-house form of ventilation which is designed to supply fresh air to the whole property. In some cases, where there is a remote wet room (kitchen, ensuite, bathroom, WC or utility room) we also advise fitting extractor fans.

The units are either situated in the loft in a house, or on a wall in an apartment. They operate quietly in the background, eliminating condensation and preventing mould. All of our PIV units are fitted with an ultra-low watt motor to ensure minimum energy consumption.

Did you know that 95% of our customers experience an improvement in condensation within one week after having a unit fitted?