Carterton, Oxfordshire
Positive input ventilation (PIV) in Carterton
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Carterton and OX18 and OX28.
- From £875 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Carterton, after checking the house first.
For positive input ventilation (PIV) in Carterton, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
PIV in Carterton at a glance
- Town
- Carterton, Oxfordshire
- Postcode districts
- OX18 and OX28
- Nearby
- Witney (5 miles), Kidlington (14 miles) and Wantage (14 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
What the work involves
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 Carterton
| 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
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
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 Carterton
Is the survey free in Carterton?
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.
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.
How do I get a price for a PIV unit in Carterton?
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 Carterton do you work in?
All of Oxfordshire. Near Carterton that includes Witney, Kidlington, Wantage and Oxford.
We will check the existing fans in your Carterton home at the same visit, because PIV works best with them working.
PIV near Carterton
More services in Carterton
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.