Positive Input Ventilation (PIV) Systems
Positive input ventilation (PIV) is one of the UK’s most popular low-energy whole home ventilation methods. It looks to protect homeowners and tenants alike from the many harmful indoor air pollutants within a home that can lead to long-term health problems if not suitably resolved. Nuaire’s PIV units help you to breathe a little easier with the knowledge that the air in your home is filtered.
Introducing, Nuaire's latest addition to the PIV Family
The New Drimaster-Eco Positive Input Ventilation now features a casing made from 100% Recycled ABS plastic, same quality, smaller footprint.
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Our latest Drimaster-Eco PIV has become more environmentally friendly due to swapping the casing from a virgin ABS plastic to 100% recycled ABS plastic. The switch will result in a reduction of 167 tons of equivalent embodied carbon over the period of a year.
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Did you know mechanical, electrical, and plumbing (MEP) systems are estimated to account for around 23% of a building’s embodied carbon?
What is Positive Input Ventilation?
Drimaster PIV units are installed in over a million homes in the UK
cost-effective solution to damp and mould
A cost-effective solution to damp and mould that helps prevent moisture build-up, protects your property from structural damage, and improves indoor air quality without expensive long-term repairs.
fast install (can be installed in a loft in less than an hour)
Can be professionally installed in a loft in less than an hour, making it a quick and convenient insulation solution with minimal disruption.
non-disruptive nature for
residents
refers to carrying out work in a way that minimises noise, mess, and inconvenience, allowing homeowners to continue their daily routines comfortably and safely while the project is being completed.
How does Positive Input Ventilation work?
PIV works by drawing air in through the unit that is installed in a suitably ventilated loft. This air is then filtered and gently diffused at ceiling level, creating a slight positive pressure within the home that moves air pollutants out through the natural leakage gaps found in every UK property, both old and new.
When would you recommend using a PIV unit?
Positive input ventilation is a highly trusted, cost-effective, and simple solution to ensure clean air flows freely throughout your home, making poor indoor air quality a thing of the past. PIV units reduce indoor pollutants, displacing stagnant and humid air.
Does a PIV unit solve damp and condensation?
Condensation is a fast-growing problem: it’s estimated that one in five houses in the UK is poorly ventilated and at risk of streaming windows, mould growth and poor indoor air quality. The average family produces up to 10 litres of water daily through simple everyday tasks such as cooking, washing, bathing and drying clothes indoors. Many homes are at risk of condensation: poorly heated homes are prone to condensation dampness on cold surfaces. In contrast, well-sealed and well-insulated homes with double glazing can trap moist air inside the house. When it comes to curing damp and condensation, ventilation is often the key - and PIV is the most cost-effective whole home ventilation system in the market today: that’s why it’s trusted by so many homeowners and landlords across the UK.
Why Choose Us?
When it comes to PIV Units Installation, we stand out because of our expertise, reliability, and attention to detail. Our certified technicians ensure each unit is installed accurately for maximum efficiency and performance. We prioritize safety, follow best industry practices, and customize the setup to suit your space perfectly. With us, you get fast, hassle-free service, long-lasting results, and peace of mind knowing your PIV units are working optimally to enhance security and energy efficiency.
Experienced & Skilled Installers
Our team consists of fully trained and highly experienced insulation specialists who understand the technical details of PIV installation. From precise measurements to airtight fitting, we ensure every board is installed correctly to maximise thermal performance and prevent gaps or thermal bridging. With hands-on industry experience, we follow best practices and UK building standards to deliver safe, efficient, and long-lasting results. We work cleanly, professionally, and with minimal disruption to your property, ensuring every project is completed to the highest standard. When you choose us, you’re choosing workmanship you can trust and results that perform for years to come.
High-Quality PIR Materials
We use only premium-grade PIV insulation boards to ensure maximum thermal performance and long-term durability. Known for their excellent heat resistance and slim profile, PIV materials deliver high insulation value without taking up unnecessary space — making them ideal for roofs, walls, floors, and loft conversions. Our PIV boards feature foil-faced surfaces that help reflect radiant heat while also acting as a moisture barrier. This not only improves overall energy efficiency but also helps protect your property from damp-related issues. Each board is carefully selected to meet UK building regulations and industry standards, ensuring safety, reliability, and consistent performance. With strong structural integrity and long-lasting effectiveness, our high-quality PIV materials provide a smart, future-proof insulation solution designed to reduce energy bills and enhance year-round comfort in your home.
Clean & Efficient Work
We take pride in delivering clean, organised, and efficient installations from start to finish. Our team works with precision and care, ensuring PIV insulation boards are measured, cut, and fitted accurately to avoid gaps and maximise thermal performance. Before starting, we prepare and protect your property to minimise dust and disruption. During installation, we maintain a tidy workspace and follow strict safety standards. Once the job is complete, we carry out a full inspection and leave your home clean and ready to use. Our streamlined process ensures minimal downtime, fast completion, and long-lasting results — giving you a hassle-free experience and insulation you can rely on for years to come.
Guaranteed Installation
Guaranteed Installation ensures that every product or service you purchase is set up correctly, safely, and efficiently, giving you complete peace of mind. Our expert technicians handle the installation process with precision, following industry standards and manufacturer guidelines. With this guarantee, you can trust that your equipment, system, or service will function perfectly from day one, reducing the risk of errors, damage, or downtime. Whether it’s home appliances, electronic devices, software, or specialized equipment, our commitment is to provide reliable, professional, and hassle-free installation every time. Choose Guaranteed Installation for confidence, convenience, and quality you can count on.
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At Nest Home Improvements LTD we understand that our customers want to improve the energy efficiency of their home to help reduce their energy bills. Make the vital energy saving improvements to your home that will make your home more energy efficient.
What our customers say
Real feedback from homeowners who trust Nest Home Improvment for warmer, more energy-efficient homes.
" Nest installed our windows and doors and we are very happy with the service . The install team were fast and efficient "
Harry Samuel
"We have used Nest to have our conservatory roof insulated and have used the room every day since it was completed ! It’s changed the room and we are very pleased overall"
Jennifer Carson
"Recently had a PIV system installed to reduce the damp issue we’ve been experiencing upstairs in our property. So far so good!"