Positive Input Ventilation (PIV) in Belfast
A lasting fix for condensation and mould: fresh filtered air for the whole home.
2009PCA Technician of the Year
87Google reviews, rated Excellent
PCAtrained surveyor
The short answer
Positive input ventilation (PIV) is a quiet unit, usually fitted in the loft, that gently supplies filtered fresh air into a home. It pushes humid, stale air out and reduces condensation and mould. We supply, upgrade and install residential ventilation systems, including PIV.
Is PIV right for you?
- Condensation on windows and walls every morning
- Black mould in bedrooms, bathrooms or kitchens
- A damp or stuffy feel in the house
- A property that is well sealed but poorly ventilated
How does PIV work?
A PIV unit draws in air, filters it and delivers it at low speed into the home. This slightly raises the air pressure inside, which pushes moist, stale air out through the building’s natural gaps. Adequate ventilation reduces the risk of condensation and mould, and improves air quality and living conditions.
How we diagnose it
We check that condensation is the real problem and not another type of damp, then recommend the right system for the property.
How we treat it
- Survey and moisture assessment
- Choose and position the PIV unit
- Install and commission the system
- Advice on getting the best from it
Positive Input Ventilation (PIV) FAQs
Does PIV stop condensation?
It can greatly reduce condensation and mould in most homes by improving ventilation, alongside sensible moisture control.
Where does the unit go?
Usually in the loft, delivering air through a ceiling diffuser.
Do you fit other ventilation?
We supply, upgrade and install various residential ventilation systems.
Need better ventilation?
Book a survey and get an honest answer on what needs doing, and what does not.
or call 077 0728 0594
Related services
Damp or timber problem?
Book a survey and get an honest answer on what needs doing.