Sinfin, Derbyshire
Positive input ventilation (PIV) in Sinfin
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Sinfin and DE1, DE23 and DE24.
- From £775 inc VAT per home
- Free survey
Condensation in Sinfin homes usually has one of two answers: better extract fans, or PIV as well.
Work in Sinfin follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Sinfin at a glance
- Town
- Sinfin, Derbyshire
- Postcode districts
- DE1, DE23 and DE24
- Nearby
- Derby (3 miles), Chaddesden (4 miles) and Oakwood (5 miles)
- Price region
- East Midlands
- Survey
- Free survey (UK mainland)
PIV for Sinfin homes
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.
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 Sinfin
| 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.
When to get it looked at
- 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). 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 Sinfin
What is the price of a PIV unit in Sinfin?
Guide prices for Sinfin 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.
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.
Is the survey free in Sinfin?
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 do I get a price for a PIV unit in Sinfin?
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.
Send a photo of your loft hatch area and landing ceiling for a quicker Sinfin quote.
PIV near Sinfin
More services in Sinfin
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.