PIV Unit Installation offers professional installation of Positive Input Ventilation (PIV) units for residential and commercial properties across Wiltshire.

Our qualified engineers ensure each unit is correctly fitted, improving air quality, reducing condensation, and preventing dampness.

We handle everything from site assessment to full system setup, delivering reliable solutions tailored to your building’s ventilation needs.

Get your free, no-obligation quote for your home or business today.

How Does a PIV Unit Work?

A PIV unit draws in fresh air from outside, filters it, and distributes it evenly throughout the property using low-energy fans.

The system creates positive air pressure, which forces stale air out through vents or gaps, reducing condensation and improving air circulation.

Since the air is filtered before entering the living space, it also removes dust, pollen, and other allergens, creating a healthier indoor environment.

Where Are PIV Units Installed?

PIV units are installed in the loft or attic space of a property, with ducts connecting to a central ceiling vent.

The loft provides a discreet location for the unit, allowing air to be distributed evenly without disruption to living spaces.

Because each property has unique layout considerations, we assess your space and install the system for optimal performance and coverage.

How Much Does PIV Unit Installation Cost?

PIV unit installation costs between £800 and £1,500.

PIV installation cost depends on property size and system features.

Basic units with standard filtration start from around £800, while advanced models with heating elements or smart controls may reach £1,500 or more.

How Long Does PIV Unit Installation Take?

Most PIV unit installations are completed within 2 to 4 hours.

Straightforward installations in accessible loft spaces may take as little as 2 hours, while complex setups with additional ducting or wiring may require more time.

Because ventilation is crucial for indoor comfort, we aim to install quickly and with minimal disruption.

What Are the Benefits of PIV Unit Installation?

Installing a PIV unit enhances indoor air quality, protects your property from moisture-related issues, and creates a healthier, more comfortable living environment.

Key benefits include:

• Condensation control – Reduces moisture levels that cause condensation, damp patches, and mould growth on walls, ceilings, and windows.
• Improved air quality – Continuously supplies filtered air, removing allergens, dust, and airborne pollutants for cleaner indoor conditions.
• Energy efficiency – Operates at low energy cost, helping to stabilise indoor temperatures and reduce reliance on heating systems.
• Mould prevention – Inhibits mould formation by lowering humidity and maintaining airflow, protecting surfaces and furnishings.
• Healthier living – Helps alleviate respiratory problems such as asthma and allergies by reducing airborne irritants and humidity.
• Low maintenance – Designed with long-lasting components and easy-to-clean filters, requiring minimal upkeep for continued performance.
• Discreet and quiet operation – Installed out of sight, typically in loft spaces, and engineered for near-silent operation during use.
• Increased property value – Adds appeal to homes by improving air quality and preventing damp, reducing future repair needs.
• Flexible integration – Compatible with other ventilation systems and adaptable to a range of property types, including homes without lofts.

Do PIV Units Work in All Property Types?

PIV units can be installed in most property types, including houses, flats, and commercial buildings.

We assess each property and recommend the most effective installation approach for your space.

Is a PIV Unit Suitable for New-Build Properties?

PIV units are suitable for both new-build and older properties.

PIV units in Wiltshire offer flexible solutions for modern airtight homes.

In new-builds, they help control moisture and ensure adequate air exchange, which is often limited by sealed construction.

Can a PIV Unit Be Installed in Properties Without a Loft?

PIV units can be installed in properties without a loft using wall-mounted or inline systems.

These units are designed to fit discreetly in spaces like utility rooms or wall cavities while still providing effective ventilation.

We assess your property layout and recommend a system that suits your available space and ventilation needs.

Can PIV Units Be Used in Basement Flats?

PIV units can be adapted for basement flats or ground-floor properties where condensation and poor airflow are common. 

Wall-mounted or ducted systems provide the same benefits as loft-based models, improving ventilation and helping prevent damp in lower-level homes.

Do PIV Units Require Maintenance?

PIV units require cleaning or replacing air filters every 6 to 12 months.

Regular filter maintenance ensures continued air quality and system efficiency.

We offer maintenance support and guidance.

Does a PIV Unit Include Heating?

Some PIV units include integral heating elements that slightly warm the incoming air, improving comfort during colder months.

Heated models are ideal for properties where cold draughts may be an issue, especially in winter.

We offer both standard and heated units, allowing you to choose based on comfort preferences and property requirements.

Are PIV Units Noisy?

PIV unit noise level is around 20-30 decibels – comparable to a whisper or background noise.

PIV units are designed for quiet operation and minimal noise.

Units are installed in lofts or out-of-sight areas to reduce disturbance further. 

Sound insulation and quality components ensure a discreet and peaceful performance, making them ideal for bedrooms or living areas.

What Is the Lifespan of a PIV Unit?

The average lifespan of a PIV unit is 10 to 15 years. 

Most units are built with durable, long-lasting components and require only occasional filter cleaning or replacement. 

Investing in a reliable unit ensures consistent performance and long-term air quality improvement with minimal ongoing costs.

Can a PIV Unit Be Controlled Remotely?

Modern PIV units come with smart controls or remote features that allow users to adjust airflow, heating, or timers via smartphone apps or wall-mounted panels. 

This offers added convenience, especially in hard-to-reach loft installations. 

Ask about models with Wi-Fi connectivity or digital control options for enhanced usability.

Do PIV Units Work in Humid Climates?

PIV units are effective in all UK regions including Wiltshire, including humid areas prone to damp and condensation. 

They continuously introduce fresh, drier air into the home, stabilising internal humidity levels. 

In coastal or high-moisture zones, PIV units play a crucial role in reducing mould and maintaining structural integrity.

Do PIV Units Need Planning Permission?

Planning permission is not typically required for PIV unit installation in residential or commercial properties throughout the Wiltshire area.

However, if the unit discharges air externally or if the building is listed, local regulations may apply.

We ensure all installations are compliant with building regulations and advise on any permissions if needed.

Can a PIV Unit Be Used Alongside Other Ventilation Systems?

PIV units can complement existing ventilation such as extractor fans or trickle vents.

The system works alongside other airflow solutions to create balanced ventilation and improve indoor air quality.

Our engineers evaluate your current setup to ensure the PIV system integrates effectively without disrupting existing airflow.

Do PIV Units Help with Radon Gas?

PIV units can help reduce radon gas levels by improving air circulation and pressure within the property.

Positive air pressure created by the unit helps dilute and expel radon gas that may enter from the ground.

In radon-affected areas, a PIV system can form part of an effective radon mitigation strategy.

Do PIV Units Help with Asthma or Allergies?

PIV units help relieve asthma and allergy symptoms by filtering out airborne particles such as dust mites, pollen, and pet dander. 

By maintaining cleaner air and reducing indoor humidity, they create a healthier breathing environment, especially for individuals with respiratory conditions or sensitivities.

Are PIV Units Energy Efficient?

PIV units are highly energy efficient, costing between £10 and £20 per year to run.

The system uses low-energy fans and operates continuously at a gentle rate, helping regulate indoor temperature while reducing humidity.

Because of their efficiency, PIV units contribute to energy savings and reduced heating cost.

Do PIV Units Help with Mould and Damp?

PIV units are highly effective in preventing mould and damp by reducing indoor humidity levels.

By constantly introducing fresh air and expelling moist air, the system creates a drier environment that is less conducive to mould growth.

This helps protect walls, ceilings, and furnishings from moisture damage and improves indoor air health.

How Can I Book a PIV Unit Installation?

Book a PIV unit installation in Wiltshire by contacting us through our online form..

We provide free, no-obligation quotes and can arrange a site visit to assess your ventilation needs.

We help homeowners and businesses create healthier indoor environments with efficient, discreet, and cost-effective PIV systems.

Get your free quote now and start benefiting from better ventilation and damp prevention.

Find More Info

Make sure you contact us today for a number of great PIV unit installation services in South West.

Here are some towns we cover near Wiltshire

Salisbury, Barking

For more information on PIV unit installation in Wiltshire , fill in the contact form below to receive a free quote today.