Winchester, Hampshire
Positive input ventilation (PIV) in Winchester
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Winchester and SO21, SO22 and SO23.
- From £875 inc VAT per home
- Free survey
PIV can suit Winchester houses and flats because it treats the whole home from one quiet unit.
Work in Winchester follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Winchester at a glance
- Town
- Winchester, Hampshire
- Postcode districts
- SO21, SO22 and SO23
- Nearby
- Bishopstoke (7 miles), Eastleigh (7 miles) and Fair Oak (7 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.
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 Winchester
| 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 |
Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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. 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 Winchester
Do you cover Winchester and nearby?
Yes. We cover Winchester and nearby places including Bishopstoke, Eastleigh, Fair Oak and Romsey. Send your postcode and we will confirm.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
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.
What is the price of a PIV unit in Winchester?
Guide prices for Winchester 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 Winchester?
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.
Most Winchester PIV jobs are done in half a day, so ask about the next available date.
PIV near Winchester
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