Tidworth, Wiltshire
Positive input ventilation (PIV) in Tidworth
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Tidworth and SP9.
- From £825 inc VAT per home
- Free survey
Condensation in Tidworth homes usually has one of two answers: better extract fans, or PIV as well.
Whether the property is in the middle of Tidworth 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 Tidworth at a glance
- Town
- Tidworth, Wiltshire
- Postcode districts
- SP9
- Nearby
- Amesbury (6 miles), Andover (8 miles) and Salisbury (13 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
PIV for Tidworth homes
Loft air is usually a little warmer and drier than outside air, and the unit filters it before it comes down into the house. 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.
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 Tidworth
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,450 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,025–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£305 inc VAT |
Guide prices using South West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
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 Tidworth
Is the survey free in Tidworth?
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 Tidworth?
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 Tidworth do you work in?
All of Wiltshire. Near Tidworth that includes Amesbury, Andover, Salisbury and Devizes.
Most Tidworth PIV jobs are done in half a day, so ask about the next available date.
PIV near Tidworth
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.