Advanced PIV Eco Technology

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How PIV Works

A PIV unit is installed in the loft, drawing in fresh external air through a series of advanced filters. This clean, tempered air is then gently introduced into the property through a ceiling-mounted diffuser, creating continuous positive pressure that naturally forces stale, moisture-laden air out through natural leakage points.

The result is a constantly refreshed indoor environment where condensation simply cannot form. Unlike dehumidifiers that treat symptoms, PIV addresses the root cause — inadequate ventilation.

Why PIV is Superior

Fresh Filtered Air

Clean air is drawn through advanced filters into the loft space.

Positive Pressure

Gentle positive pressure displaces stale, moisture-laden air out.

Temperature Control

Integrated heater tempers incoming air in winter months.

Energy Efficient

Uses as little as 5 watts — less than a lightbulb.

Ultra-Quiet

Operates at whisper-quiet levels, typically below 20 dBA.

Long-Term Protection

Prevents condensation and mould growth permanently.

The Proven Solution: Positive Input Ventilation (PIV)

PIV units effectively combat damp and mould in UK homes, where

1 in 5

properties face these issues

85%

private tenant satisfaction

72%

reporting no more mould and damp after installation

Installation Process

Free Survey

Professional assessment of your property’s ventilation needs.

Recommendation

Tailored solution designed for your specific situation.

Installation

Quick, clean installation by certified engineers (2-4 hrs).

Aftercare

Ongoing support and maintenance to ensure peak performance.

Proven Impact

Surveyors reports for Home Owners.

30%

indoor humidity reduced

30%

cut mould markers like TMVOCS

delivering noticeable improvements in air quality.

Over 1 million units

installed across the UK

demonstrate their reliability for whole-home

How PIV Works

The Unit sits in your loft or on a wall, sucking in outside air and cleaning it with filters to block dust and bugs.

A quiet fan warms the air if needed and softly blows it down into your hallway through a ceiling vent.

This makes “positive pressure” inside, like gently inflating a balloon, pushing out old, wet air through cracks in windows, doors, and walls.

It reduces humidity (around 40-60%) to prevent condensation, damp, and mould on cold windows and walls.

Runs all day super quietly (like a whisper), speeds up if it’s humid, and uses limited power – like a lightbulb.

Filters pollutants, pollen, allergens, radon and mycotoxins.

Core Benefits

Reduces humidity to protect property structure and reducing property maintenance costs.
Fast installation with minimal disruption.
Eliminates condensation, damp, and mould: Reduces humidity to stop wet windows, black spots, and musty smells.
Boosts air quality - filters out dust, pollen, pollutants, and allergens for fresher, healthier breathing.
Neutralises the advancements of issues with miss-installed cavity wall insulation.
Healthier living - helps prevent asthma triggers, allergies, wheezing, and respiratory issues,cardiovascular issues especially for kids and elderly.
Saves on repairs - protects walls, plaster, wood, and paint from damage, avoiding costly fixes.
Quiet and efficient - runs silently 24/7 on low power (like a lightbulb), with easy upkeep.

What Our Client Says

Real Experiences, Real Impact

J Potter Homeowner

Absolutely delighted with our new DRI-ECO-HC ventilation system. Worked straight away, no condensation in wardrobes and walls dry. Struggled for 2 years trying to solve this problem.

M Gregory Homeowner

Just wanted to say what an amazing difference fitting your Drimaster PIV units has made to our house. Read about these units on the internet after researching how to deal with black mould and condensation on our windows. We’ve lived in our double glazed, cavity filled bungalow for 4 years and despair at the mould that appears every autumnal and winter. I found it hard to believe that such a simple solution would resolve the problem. I can’t believe the difference in condensation in less than 24 hours.

Michelle Homeowner

This really works. We suffered condensation & damp for 20 years before we installed a Nuaire Drimaster unit. It's been fitted now for 5 years & after the first 3 weeks we haven't suffered condensation or damp since. Thanks Nuaire

Transform Your Home with PIV

Say goodbye to mould and condensation. Book your free survey today.