Birstall, Leicestershire
Positive input ventilation (PIV) in Birstall
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Birstall and LE1, LE4 and LE7.
- From £775 inc VAT per home
- Free survey

PIV is often a good fix for Birstall homes with condensation on every window.
Birstall is about 34 miles from our base in Great Barr, Birmingham. We book Birstall 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 Birstall at a glance
- Town
- Birstall, Leicestershire
- Postcode districts
- LE1, LE4 and LE7
- Nearby
- Belgrave (1 mile), Humberstone (2 miles) and Leicester (2 miles)
- Price region
- East Midlands
- Survey
- Free survey (UK mainland)
What the work involves
Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole. PIV works well in houses and flats with general condensation on windows and cold walls.
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 Birstall
| 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 |
East Midlands rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- 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
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 Birstall
Do you cover Birstall and nearby?
Yes. We cover Birstall and nearby places including Belgrave, Humberstone, Leicester and Syston. Send your postcode and we will confirm.
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 is the price of a PIV unit in Birstall?
Guide prices for Birstall 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.
Is the survey free in Birstall?
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.
Book a free Birstall survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Birstall
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