Positive Input Ventilation (PIV) Installation

Eliminate Condensation, Mould & Stale Air – From Just £895 Fully Installed

If you're tired of waking up to streaming windows, black mould on walls, or that damp, musty smell that never seems to go away, a Positive Input Ventilation (PIV) system could be the solution you've been looking for.

Our expertly installed PIV units work around the clock to introduce fresh, filtered air into your home, helping to reduce condensation, prevent mould growth, and improve indoor air quality throughout the property.

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Save £100 during our Summer Sale

For a limited time, take advantage of our Summer Sale Price of just £895 fully fitted by our experienced installation team – a saving of £100 off our usual winter installation price of £995.

This seasonal offer won't last forever. As demand increases later in the year and condensation problems return, our standard installation price reverts to £995. Secure your installation now and enjoy a fresher, healthier home before the colder months arrive.

Book today and save £100 while the Summer Sale is still available

01772 342 960

Positive Input Ventilation (P.I.V.)

A Positive Input Ventilation (PIV) unit is a home ventilation system designed to improve indoor air quality and help control moisture levels in a property. Here's how it works and how it can help reduce damp in your home:

Eradicate damp and poor air quality with a Positive Input Ventilation Unit.

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What is Positive Input Ventilation?

Is a Positive Input Ventilation (P.I.V.) unit the solution to your damp and condensation issue?

Invented back in 1972 a loft mounted P.I.V. unit creates a healthy damp free environment by pumping and circulating fresh filtered air into your home and forcing stale air out of the gaps and cracks in the fabric of the building.

P.I.V's are currently installed in over 1 million UK homes.

Positive Input Ventilation Explained

Positive Input Ventilation (PIV) systems have gained popularity in recent years for their ability to improve air quality and reduce issues like condensation and dampness.

In this video we'll look at how Positive Input Ventilation systems work and whether they’re right for your home

How PIV Units Work

Air Input: The PIV unit typically draws fresh air from the outside or loft space (if clean and ventilated) into the home.
Filtration: The incoming air is filtered to remove dust, pollen, and other contaminants.
Positive Pressure: The unit gently pushes this filtered air into the living spaces. This creates a slight positive pressure within the home.
Moisture and Pollutant Removal: The positive pressure forces stale, moist, and polluted air out of the property through gaps, vents, or natural leakage points.

How PIV Helps Reduce Damp

PIV units are particularly effective in reducing condensation damp, which occurs when warm, moist air inside the house comes into contact with cold surfaces (e.g., windows or walls). Here's how:

Humidity Control: By continuously introducing fresh, dry air and reducing humidity levels, PIV units limit the conditions where condensation forms.
Improved Air Circulation: Constant airflow helps prevent stagnant air pockets where moisture can accumulate.
Mold Prevention: Lower humidity levels reduce the risk of mold growth, which thrives in damp environments.

Benefits of PIV Units

Reduces condensation and related damp issues.
Improves overall indoor air quality.
Helps prevent mold and mildew.
May reduce dust mites, which thrive in humid conditions.
Energy-efficient operation.

When to Consider a PIV Unit

If your home suffers from persistent condensation or mold issues.
If there's poor natural ventilation in the property.
If you've tried other methods (e.g., dehumidifiers, extractor fans) without success.

Limitations

PIV units are not a solution for structural damp (e.g., rising damp or penetrating damp). These issues require separate investigation and remediation.

Installation costs can be a factor for some people, though they are typically less expensive than extensive repairs caused by unchecked damp.