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Positive Input Ventilation Units

Positive Input Ventilation units are an effective way to reduce condensation and mould while improving indoor air quality. With low running costs and quiet performance, they deliver a continuous supply of fresh filtered air, making homes healthier and more comfortable.

9 Items

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  • Vent Axia PureAir Home 3 storey Ventilation Kit (479092)

    Product Code: 479092

    £346.49 £288.74
  • Vent Axia PureAir Home Positive Input Ventilation (PIV) with Heater (479091)

    Product Code: 479091

    £350.19 £291.82
  • Vent Axia PureAir Home Ventilation Kit (479090)

    Product Code: 479090

    £303.24 £252.70
  • Manrose Replacement G4 Filter Set for Lo-Watt Pivotal - MANPIVG4

    Product Code: MANPIVG4

    £88.57 £73.81
  • Monsoon Energysaver Compact Positive Input Ventilation System - PPS/W/H

    Product Code: PPS/W/H

    £426.99 £355.82
  • MES Positive Pressure Condensation Control Unit - Loft Model(PPS/LH)

    Product Code: PPS/L/H

    £415.97 £346.64
  • Manrose Lo-Watt Pivotal Positive Input Ventilation Unit with 500W Heater - MANPIVH

    Product Code: MANPIVH

    £320.68 £267.23
  • MES Positive Pressure Condensation Control Unit - Flat/Apartment Model (PPS/FH)

    Product Code: PPS/FH

    £585.00 £487.50
  • Manrose Lo-Watt Pivotal Positive Input Ventilation Unit - MANPIV

    Product Code: MANPIV

    £283.60 £236.33

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If there is something you require that is not on our site, simply give us a call on 01424 220384 or send us a message via our contact form and we’ll do our best to get it added to our online electrical wholesale store.

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Experience Advanced Airflow with Our Positive Input Ventilation Units

Positive Input Ventilation Units (PIVs) are a smart and energy-efficient way to tackle common household problems such as condensation, damp and stale air. At Electrical2Go, we stock high-quality PIV systems from trusted names designed to improve indoor air quality in residential and commercial properties alike.

Types of Positive Input Ventilation Units

By gently introducing clean, filtered air into your home, PIV units help create a healthier, drier and more comfortable environment. Our selection includes a variety of units and accessories suitable for both domestic and commercial applications:

Loft-Mounted PIV Units

Designed for installation in the loft, these units draw in air from the roof space and gently ventilate the entire property. They’re ideal for houses with accessible lofts.

Apartment or Flat PIV Units

Specially configured for homes without loft spaces, these units typically feature compact designs and are installed within habitable areas like hallways or cupboards.

Compact and Low-Wattage PIV Systems

Efficient, space-saving systems that offer reliable air quality control with minimal energy use. Ideal for energy-conscious households and smaller homes.

Browse Popular Positive Input Ventilation Ranges and Features

Compare Positive Input Ventilation ranges by features, installation type and suitability, making it easier to identify the right system for your property and ventilation requirements using our table below:

Product Range Key Feature Ideal Use Case Control Options
Controllers User-friendly system management Customised ventilation schedules Timers, sensors
ECO Energy-efficient airflow systems Domestic spaces with high insulation Low-wattage operation
Lo-Carbon Centra Continuous, low-energy ventilation New-builds or passive homes Humidity and boost
MLA Extension Leads and Adaptors Cabling and accessory compatibility Seamless installation and setup Plug-and-play options

Available Brands in Our Positive Input Ventilation Units

We stock PIV systems from some of the most respected ventilation manufacturers in the UK, offering peace of mind with every purchase.

> Vent-Axia: Innovators in home ventilation, offering smart, energy-saving PIV systems that help maintain indoor comfort and health.

Shop Vent-Axia PIV Units >>

> Manrose: Dependable and budget-friendly units suitable for general domestic use, known for simple controls and effective moisture reduction.

Shop Manrose PIV Units >>

> National Ventilation: UK-designed PIV solutions built with reliability, low maintenance and energy efficiency in mind for both home and commercial use.

Shop National Ventilation PIV Units >>

Frequently Asked Questions

It’s a system that gently introduces filtered, fresh air into a building to replace stale, humid air and improve ventilation.

PIV systems are low-energy and affordable to run, typically using under 10 watts for continuous, efficient operation without noticeable impact on bills.

PIV systems typically draw air from loft spaces, which are warmer than external air, helping maintain indoor comfort while still refreshing the space.

If you’re dealing with condensation, mould or poor air quality, PIV units can be a smart, long-term solution for healthier air.

Positive ventilation introduces fresh air into a space, while negative systems extract stale air. Both serve to maintain good air quality, but in different ways.

Modern PIV systems are designed for quiet performance. If installed correctly, they operate with minimal noise and won't disrupt daily life.

No – in fact, using loft-sourced air, PIV can reduce heating costs by keeping temperatures more stable than traditional extract systems.

Trickle vents can support balanced ventilation. Some buildings benefit from combining both to maintain constant airflow and pressure equilibrium.

Yes, by constantly supplying fresh air, PIV units help reduce excess moisture, lowering humidity and preventing damp or mould growth indoors.

Installation should be carried out by a qualified professional, such as an electrician or ventilation installer, to ensure safe and efficient operation.

Most users notice a reduction in condensation and musty smells within a few days of operation, with full benefits seen over several weeks.

Boosting ventilation is key. Using a PIV unit or opening windows alongside extractor fans helps quickly reduce high moisture levels indoors.


Need Help Choosing The Right Positive Input Ventilation Unit?

Our friendly customer service team are always ready to provide answers, offer support and share information. So if you're still unsure on which product best suits your needs, or for any other questions or queries, please don't hesitate to give us a call on 01424 220384 for expert advice.

Positive Input Ventilation (PIV) units provide a simple, energy-efficient way to improve indoor air quality by gently introducing filtered, fresh air into your home or property. By creating a positive pressure, these systems help to push out stale, humid air through natural leakage points and existing vents. Ideal for combating condensation, mould growth and lingering odours, PIV units are a popular choice for both refurbishment and new-build projects. Many models feature low running costs, quiet operation and easy installation in lofts or on walls, making them a reliable, low-maintenance solution for long-term ventilation and moisture control.