PIV Installation in Westbury

County: Wiltshire

A Positive Input Ventilation (PIV) system is designed to improve the air quality inside your home by gently introducing fresh, filtered air to reduce humidity, stale air, and condensation. It’s especially useful in UK homes prone to damp or mould, common in older properties or those with poor ventilation. You might consider a PIV installation if you’ve noticed persistent condensation on windows, damp patches on walls, or musty smells. It’s a practical way to create a healthier living environment, reducing the risk of mould growth and related health issues without needing structural work like replacing walls or windows.

Open full page →

⭐ Introduction

You might consider a PIV installation if you’ve noticed persistent condensation on windows, damp patches on walls, or musty smells. It’s a practical way to create a healthier living environment, reducing the risk of mould growth and related health issues without needing structural work like replacing walls or windows.

🔧 What the job involves

Installing a PIV system means fitting a small fan unit—usually in the loft or an airing cupboard—that draws in fresh air from outside, filters it to remove dust and pollen, then gently distributes it through the home, often via ceiling vents.

The system works continuously but quietly, creating a slight positive pressure inside. This fresh air pushes out stale, moist air, reducing condensation and improving air quality.

A qualified electrician will carry out the installation since the system requires an electrical supply and must be integrated safely with your home's existing wiring. The work typically includes:

Checking your property’s layout and ventilation needs.
Installing the fan unit in a suitable, accessible location.
Running ducts or pipes that gently release fresh air into your main living spaces.
Connecting the unit to your electrical supply safely and in compliance with UK electrical regulations.
Testing the system to ensure it runs correctly and efficiently.

📝 Step-by-step from booking to completion

Initial enquiry: Contact a reputable, qualified electrician or ventilation specialist offering PIV installation.
Survey and quote: The electrician will visit to assess your home, discuss your ventilation needs, and provide a written quote.
Agreeing the work: Review and approve the quote, scheduling a convenient date for installation.
Pre-installation preparation: Ensure loft or cupboard access is clear, and any delicate items are protected.
Installation day: The electrician installs the unit, ducts, wiring, and vents, then tests everything.
Explaining use and maintenance: You’ll be shown how the system operates and given advice on upkeep.
Documentation: The electrician should provide any relevant certificates or guarantees.
Aftercare: Arrange any recommended servicing to keep your system running efficiently.

💷 Main costs to expect

Labour: Electrician’s time for survey, installation, and testing — typically £150–£300.
Materials and parts: PIV unit, ducting, vents, fixings — roughly £200–£500 depending on system size and quality.
Additional electrical work: Wiring upgrades if needed, or connection to consumer unit — £50–£150.
Disposal: Removal of old units or packaging — usually modest or included.
Certification: Electrical works notifiable under Part P of Building Regulations may require certification — often included in labour quote.

Example:
PIV system (£300) + labour (£200) + minor cabling (£75) = £575 total.

📊 What affects the price

Property size and number of rooms to ventilate.
Accessibility of installation areas (loft stairs, cramped spaces).
Complexity of duct routing—straightforward runs cost less.
Electrical system condition—may need upgrades.
Whether additional ventilation work is required (e.g., vent modifications).
Location and call-out fees.
Urgency or weekend/evening work.
Compliance with Building Regulations (Part P) and warranty requirements.

⏱ How long does it take?

Straightforward installations: 3–5 hours for a single-unit system in an easily accessible loft.
More complex setups: Full-day (6–8 hours) if multiple ducts or electrical upgrades are needed.
Additional time if remedial work or planning for ventilation layout is involved.

🏠 Can you DIY it?

Installing a PIV system involves electrical wiring and must comply with UK electrical safety regulations (Part P). For safety, building compliance, and insurance reasons, this job isn’t recommended as a DIY project unless you’re a qualified electrician.

Incorrect installation risks electrical faults, poor ventilation performance, or damage to your home. Hiring a Gas Safe registered installer is not required for PIV (it’s not gas-related), but using a qualified electrician is essential.

💰 Typical UK price range

You can expect to pay approximately £450 to £900 (including VAT at 20%) for a standard PIV installation in a typical UK home. Larger or more complex systems will cost more.

This is a general estimate; getting a personalised quote is important for accurate pricing.

✅ Handy tips before you start

Clear loft or cupboard access before the electrician arrives.
Ask about filter replacement schedules and costs.
Keep all paperwork — invoices, certificates, and warranty documents — safe.
Consider regular servicing every 1–2 years for optimal system performance.
Check if your home insurance or warranty covers ventilation systems.
Ensure the installer explains how to operate and maintain the system thoroughly.

Following these steps can help ensure your new PIV system works efficiently, improving your home’s air quality and comfort for years to come.

Checkatrade Which? Trusted Traders TrustATrader MyBuilder Rated People

Other electricians projects in Westbury

Appliance Repair
Appliance Repair by a vetted local pro.
Bathroom TV Installation
Bathroom TV Installation by a vetted local pro.
Ceiling Fan Installation
Ceiling Fan Installation by a vetted local pro.
Chandelier Installation
Chandelier Installation by a vetted local pro.
Change a hard wired appliance point to a normal power socket
Change a hard wired appliance point to a normal power socket by a vetted local pro.
Connect a cooker or other appliance to an existing hard-wired power outlet
Connect a cooker or other appliance to an existing hard-wired power outlet by a vetted local pro.
Cooker Hood Repair
Cooker Hood Repair by a vetted local pro.
Diagnose and fix an electrical fault
Diagnose and fix an electrical fault by a vetted local pro.
Dimmer Switches Installation
Dimmer Switches Installation by a vetted local pro.
Disconnect a hard-wired cooker or other appliance
Disconnect a hard-wired cooker or other appliance by a vetted local pro.
Do one hour’s electrical work
Do one hour’s electrical work by a vetted local pro.
Drive Over Lights
Drive Over Lights by a vetted local pro.
EICR: Electrical Inspection Condition Report
EICR: Electrical Inspection Condition Report by a vetted local pro.
EPC Certificate
EPC Certificate by a vetted local pro.
Electric Blind
Electric Blind by a vetted local pro.
Electric Car Charger Installation
Electric Car Charger Installation by a vetted local pro.
Electric Fire Installation
Electric Fire Installation by a vetted local pro.
Electric Shower
Electric Shower by a vetted local pro.
Electrical Safety Check
Electrical Safety Check by a vetted local pro.
Electrical Wall Box
Electrical Wall Box by a vetted local pro.
Electrician Hourly Rate
Electrician Hourly Rate by a vetted local pro.
Emergency Electrician
Emergency Electrician by a vetted local pro.
Ethernet and Phone Lines
Ethernet and Phone Lines by a vetted local pro.
Extend wiring for new light where there hasn’t been one before
Extend wiring for new light where there hasn’t been one before by a vetted local pro.
Fire Suppression System
Fire Suppression System by a vetted local pro.
Fit switched fused spur for boiler or other appliance
Fit switched fused spur for boiler or other appliance by a vetted local pro.
Fix a light or light switch which isn’t working properly
Fix a light or light switch which isn’t working properly by a vetted local pro.
Fix a socket which isn’t working
Fix a socket which isn’t working by a vetted local pro.
Fix a tripping fusebox
Fix a tripping fusebox by a vetted local pro.
Fix an electric heater
Fix an electric heater by a vetted local pro.
Fix an extractor fan
Fix an extractor fan by a vetted local pro.
Fix an intercom which isn’t working correctly
Fix an intercom which isn’t working correctly by a vetted local pro.
Fix or replace bathroom pull switch
Fix or replace bathroom pull switch by a vetted local pro.
Hive Installation
Hive Installation by a vetted local pro.
Home Cinema
Home Cinema by a vetted local pro.
Home Generator Installation
Home Generator Installation by a vetted local pro.
Home Lift
Home Lift by a vetted local pro.
Indoor Lights Decor
Indoor Lights Decor by a vetted local pro.
Install Hot Tub power
Running a Hot Tub by a vetted local pro.
Install Recessed Lighting
Installing Recessed Lighting by a vetted local pro.
Install Smart Garage Door Opener
Smart Garage Door Opener by a vetted local pro.
Install Smart Lighting
Smart Lighting by a vetted local pro.
Install Under-Cabinet Lighting
Installing Under-Cabinet Lighting by a vetted local pro.
Install a Smart Meter
Smart Meter by a vetted local pro.
Install a light (to existing wiring)
Install a light (to existing wiring) by a vetted local pro.
Install a nest thermostat
Install a nest thermostat by a vetted local pro.
Install a new power outlet for a cooker or other hard-wired appliance and connect the appliance
Install a new power outlet for a cooker or other hard-wired appliance and connect the appliance by a vetted local pro.
Install an additional aerial socket
Install an additional aerial socket by a vetted local pro.
Install an additional light switch
Install an additional light switch by a vetted local pro.
Install an additional power socket
Install an additional power socket by a vetted local pro.
Install earth bonding
Install earth bonding by a vetted local pro.
Install new power outlet for a cooker or other hard-wired appliance and connect the appliance
Install new power outlet for a cooker or other hard-wired appliance and connect the appliance by a vetted local pro.
Install new smoke or heat detector
Install new smoke or heat detector by a vetted local pro.
Install or replace a Fusebox
Install or replace a Fusebox by a vetted local pro.
Lawn Mower Repair
Lawn Mower Repair by a vetted local pro.
Loss of power
Loss of power by a vetted local pro.
Motion Sensor Lights Installation
Motion Sensor Lights Installation by a vetted local pro.
Move a light
Move a light by a vetted local pro.
Move a light switch
Move a light switch by a vetted local pro.
Move a power socket
Move a power socket by a vetted local pro.
Move a smoke or heat detector
Move a smoke or heat detector by a vetted local pro.
Move an Electric Meter
Moving an Electric Meter by a vetted local pro.
Move an aerial socket
Move an aerial socket by a vetted local pro.
Move an electric heater
Move an electric heater by a vetted local pro.
Move an intercom handset
Move an intercom handset by a vetted local pro.
New Electric Fuse Box
New Electric Fuse Box by a vetted local pro.
New Plug Sockets
New Plug Sockets by a vetted local pro.
Outdoor Cinema
Outdoor Cinema by a vetted local pro.
Outdoor Lights
Outdoor Lights by a vetted local pro.
Outdoor Socket Installation
Outdoor Socket Installation by a vetted local pro.
Oven Installation
Oven Installation by a vetted local pro.
Oven Repair
Oven Repair by a vetted local pro.
Parking Sensor Installation
Parking Sensor Installation by a vetted local pro.
Portable Appliance Testing
Portable Appliance Testing by a vetted local pro.
Projector Installation
Projector Installation by a vetted local pro.
Repair or fix a fire alarm or fire alarm system
Repair or fix a fire alarm or fire alarm system by a vetted local pro.
Replace Circuit Breakers
Replacing Circuit Breakers by a vetted local pro.
Replace a fire alarm/smoke detector
Replace a fire alarm/smoke detector by a vetted local pro.
Replace a light switch
Replace a light switch by a vetted local pro.
Replace a power socket
Replace a power socket by a vetted local pro.
Replace an aerial socket
Replace an aerial socket by a vetted local pro.
Replace an electric fire
Replace an electric fire by a vetted local pro.
Replace an electric heater
Replace an electric heater by a vetted local pro.
Replace an extractor fan
Replace an extractor fan by a vetted local pro.
Replace an intercom handset
Replace an intercom handset by a vetted local pro.
Rewire a House
Rewire a House by a vetted local pro.
Roof Heating Cable Installation
Roof Heating Cable Installation by a vetted local pro.
Smart Home Installation
Smart Home Installation by a vetted local pro.
Smart Plugs
Smart Plugs by a vetted local pro.
Smart Speakers
Smart Speakers by a vetted local pro.
Smoke Alarm Installation
Smoke Alarm Installation by a vetted local pro.
Solar Battery
Solar Battery by a vetted local pro.
Solar Panel Installation
Solar Panel Installation by a vetted local pro.
Solar Panel Maintenance
Solar Panel Maintenance by a vetted local pro.
Stairlift Installation
Stairlift Installation by a vetted local pro.
Storage Heaters
Storage Heaters by a vetted local pro.
TV Aerial Installation
TV Aerial Installation by a vetted local pro.
TV Screen Repair
TV Screen Repair by a vetted local pro.
Wind Turbine Installation
Wind Turbine Installation by a vetted local pro.
Wireless Light Switch
Wireless Light Switch by a vetted local pro.

Are you a Tradesperson or business owner?

Grow your business with Fixington — tools and services for electricians, plumbers and heating engineers.

1) Fixington app

Estimate, schedule and invoice on the go with our iPhone app and web tools.

More info Buy

2) Fixdd job management

Manage jobs from quote to invoice, take card payments, and keep customers updated.

Visit fixdd.com

3) Get listed on Fixington

Appear where customers are searching. Showcase reviews and get discovered locally.

See all services for tradespeople