Fareham, Hampshire
Positive input ventilation (PIV) in Fareham
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Fareham and PO14, PO15 and PO16.
- From £875 inc VAT per home
- Free survey

If your Fareham flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Fareham is about 122 miles from our base in Great Barr, Birmingham. We book Fareham visits by appointment and confirm the date in writing. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Fareham at a glance
- Town
- Fareham, Hampshire
- Postcode districts
- PO14, PO15 and PO16
- Nearby
- Gosport (4 miles), Cosham (5 miles) and Portsmouth (5 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach PIV in Fareham
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Fareham
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,100–£1,875 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £160–£325 inc VAT |
South East rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Fareham
What area around Fareham do you work in?
All of Hampshire. Near Fareham that includes Gosport, Cosham, Portsmouth and Southsea.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
Do you cover Fareham and nearby?
Yes. We cover Fareham and nearby places including Gosport, Cosham, Portsmouth and Southsea. Send your postcode and we will confirm.
What is the price of a PIV unit in Fareham?
Guide prices for Fareham use South East rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £875 to £1,525 inc VAT per home. We confirm a fixed price in writing before any work starts.
Send a photo of your loft hatch area and landing ceiling for a quicker Fareham quote.
PIV near Fareham
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