Woolston, Hampshire
Positive input ventilation (PIV) in Woolston
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Woolston and SO14, SO18 and SO19.
- From £875 inc VAT per home
- Free survey
PIV can suit Woolston houses and flats because it treats the whole home from one quiet unit.
Whether the property is in the middle of Woolston or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Woolston at a glance
- Town
- Woolston, Hampshire
- Postcode districts
- SO14, SO18 and SO19
- Nearby
- Southampton (1 mile), Portswood (2 miles) and Hythe (2 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Woolston homes
It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.
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 Woolston
| 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.
Common reasons people call
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
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 Woolston
Is the survey free in Woolston?
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.
How much does PIV cost to install?
A loft-mounted PIV unit usually costs £795 to £1,395 including VAT supplied and fitted, and £995 to £1,695 for a wall-mounted unit in a flat. A heater module adds around £145 to £295.
Does PIV really stop condensation?
PIV reduces condensation in most homes because it dilutes moist air and keeps it moving, but it works best alongside working extract fans in the kitchen and bathroom. Leaks, rising damp or a cold bridge need fixing separately.
How do I get a price for a PIV unit in Woolston?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
What area around Woolston do you work in?
All of Hampshire. Near Woolston that includes Southampton, Portswood, Hythe and Hedge End.
We will check the existing fans in your Woolston home at the same visit, because PIV works best with them working.
PIV near Woolston
More services in Woolston
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.