Finchley, Greater London
Positive input ventilation (PIV) in Finchley
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Finchley and N2, N3 and N12.
- From £950 inc VAT per home
- Free survey
PIV is often a good fix for Finchley homes with condensation on every window.
We cover Finchley and the surrounding N2, N3 and N12 postcodes as part of our work across Greater London. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Finchley at a glance
- Town
- Finchley, Greater London
- Postcode districts
- N2, N3 and N12
- Nearby
- Golders Green (2 miles), Friern Barnet (2 miles) and Totteridge (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Finchley
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 Finchley
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,200–£2,025 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £175–£355 inc VAT |
London 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
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
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 Finchley
How do I get a price for a PIV unit in Finchley?
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.
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.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
What area around Finchley do you work in?
All of Greater London. Near Finchley that includes Golders Green, Friern Barnet, Totteridge and Muswell Hill.
Do you cover Finchley and nearby?
Yes. We cover Finchley and nearby places including Golders Green, Friern Barnet, Totteridge and Muswell Hill. Send your postcode and we will confirm.
Most Finchley PIV jobs are done in half a day, so ask about the next available date.
PIV near Finchley
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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.