Fair Oak, Hampshire
Positive input ventilation (PIV) in Fair Oak
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Fair Oak and SO18, SO30 and SO50.
- From £875 inc VAT per home
- Free survey

PIV is often a good fix for Fair Oak homes with condensation on every window.
Fair Oak is about 113 miles from our base in Great Barr, Birmingham. We book Fair Oak 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 Fair Oak at a glance
- Town
- Fair Oak, Hampshire
- Postcode districts
- SO18, SO30 and SO50
- Nearby
- Bishopstoke (1 mile), Eastleigh (2 miles) and Hedge End (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Fair Oak homes
Many units have a temperature sensor that reduces the flow or switches to a heater module on cold days, so the incoming air does not feel like a draught. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in Fair Oak
| 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
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Fair Oak
Do you cover Fair Oak and nearby?
Yes. We cover Fair Oak and nearby places including Bishopstoke, Eastleigh, Hedge End and Portswood. Send your postcode and we will confirm.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
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.
What is the price of a PIV unit in Fair Oak?
Guide prices for Fair Oak 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.
Is the survey free in Fair Oak?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Send a photo of your loft hatch area and landing ceiling for a quicker Fair Oak quote.
PIV near Fair Oak
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