4. PIV Systems (Positive Input Ventilation)
Filtered Fresh Air for a Drier, Healthier Home
PIV systems deliver a continuous supply of filtered, fresh air into your home. This dilutes moisture, pollutants, and stale air, helping maintain a dry and healthy indoor environment.
We install PIV units for both loft-based homes and flats without roof space, making them a versatile solution for many property types.
What PIV Provides
Consistent fresh filtered air
Reduced humidity and condensation
Lower risk of black mould
Improved indoor air quality
Cleaner environment with less dust and allergens
Quiet, low-energy operation
Best Suited To
Older homes with insufficient ventilation
Properties affected by recurring condensation
Flats and apartments
Homes needing a simple, effective retrofit solution
Installation Options
Loft-based PIV units for houses with roof space
Wall-mounted PIV units for flats and properties without lofts
Quick Facts
🌿 Fresh filtered air supply
🏠 Loft & flat units available
💧 Reduces condensation & mould risk
🔇 Silent, continuous operation
🫁 Improves indoor air quality
Why Choose PIV
✔ Simple, effective retrofit solution
✔ Great for older homes and modern flats
✔ Efficient at tackling humidity
✔ Low maintenance with long-lasting filters
Frequently Asked Questions
Q: What does a PIV unit actually do?
It gently introduces filtered fresh air, pushing out stale, damp air.
Q: Can PIV be installed in flats?
Yes. We install wall-mounted systems for properties without loft space.
Q: Will I feel a draft?
No — PIV introduces air slowly and evenly.
Q: Does PIV help reduce allergens?
Yes. The filtered air helps reduce dust, pollen, and other airborne particles.