Daventry, Northamptonshire
Positive input ventilation (PIV) in Daventry
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Daventry and NN11.
- From £775 inc VAT per home
- Free survey
PIV is often a good fix for Daventry homes with condensation on every window.
Daventry is about 38 miles from our base in Great Barr, Birmingham. We book Daventry 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 Daventry at a glance
- Town
- Daventry, Northamptonshire
- Postcode districts
- NN11
- Nearby
- Rugby (9 miles), Northampton (12 miles) and Royal Leamington Spa (15 miles)
- Price region
- East Midlands
- Survey
- Free survey (UK mainland)
What the work involves
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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Daventry
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £775–£1,375 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £975–£1,650 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £140–£290 inc VAT |
These ranges use our East Midlands rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
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). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Daventry
What area around Daventry do you work in?
All of Northamptonshire. Near Daventry that includes Rugby, Northampton, Royal Leamington Spa and Banbury.
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.
Do you cover Daventry and nearby?
Yes. We cover Daventry and nearby places including Rugby, Northampton, Royal Leamington Spa and Banbury. Send your postcode and we will confirm.
What is the price of a PIV unit in Daventry?
Guide prices for Daventry use East Midlands rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £775 to £1,375 inc VAT per home. We confirm a fixed price in writing before any work starts.
Most Daventry PIV jobs are done in half a day, so ask about the next available date.
PIV near Daventry
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