Shrewsbury, Shropshire
Positive input ventilation (PIV) in Shrewsbury
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Shrewsbury and SY1, SY2 and SY3.
- From £795 inc VAT per home
- Free survey
PIV is often a good fix for Shrewsbury homes with condensation on every window.
For positive input ventilation (PIV) in Shrewsbury, 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 Shrewsbury at a glance
- Town
- Shrewsbury, Shropshire
- Postcode districts
- SY1, SY2 and SY3
- Nearby
- Wellington (10 miles), Hadley (11 miles) and Telford (13 miles)
- Price region
- West Midlands
- Survey
- Free survey (UK mainland)
PIV for Shrewsbury 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.
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 Shrewsbury
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £795–£1,395 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £995–£1,695 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £145–£295 inc VAT |
Guide prices using West Midlands rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- 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
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 Shrewsbury
How do I get a price for a PIV unit in Shrewsbury?
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 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.
What area around Shrewsbury do you work in?
All of Shropshire. Near Shrewsbury that includes Wellington, Hadley, Telford and Newport.
Do you cover Shrewsbury and nearby?
Yes. We cover Shrewsbury and nearby places including Wellington, Hadley, Telford and Newport. Send your postcode and we will confirm.
Book a free Shrewsbury survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Shrewsbury
More services in Shrewsbury
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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.