Banbury, Oxfordshire
Positive input ventilation (PIV) in Banbury
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Banbury and OX15, OX16 and OX17.
- From £875 inc VAT per home
- Free survey

For a typical Banbury semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Whether the property is in the middle of Banbury 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 Banbury at a glance
- Town
- Banbury, Oxfordshire
- Postcode districts
- OX15, OX16 and OX17
- Nearby
- Brackley (8 miles), Bicester (14 miles) and Daventry (15 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Banbury
| 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.
When to get it looked at
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Banbury
How do I get a price for a PIV unit in Banbury?
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.
How much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
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.
What area around Banbury do you work in?
All of Oxfordshire. Near Banbury that includes Brackley, Bicester, Daventry and Buckingham.
Do you cover Banbury and nearby?
Yes. We cover Banbury and nearby places including Brackley, Bicester, Daventry and Buckingham. Send your postcode and we will confirm.
Get a PIV guide price for your Banbury home online, then confirm it on a free survey.
PIV near Banbury
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