New Barnet, Greater London
Positive input ventilation (PIV) in New Barnet
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering New Barnet and EN4, EN5 and N20.
- From £950 inc VAT per home
- Free survey
PIV can suit New Barnet houses and flats because it treats the whole home from one quiet unit.
New Barnet is about 97 miles from our base in Great Barr, Birmingham. We book New Barnet visits by appointment and confirm the date in writing. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in New Barnet at a glance
- Town
- New Barnet, Greater London
- Postcode districts
- EN4, EN5 and N20
- Nearby
- East Barnet (1 mile), Barnet (1 mile) and Cockfosters (1 mile)
- Price region
- London
- 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.
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 New Barnet
| 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 |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- 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
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from New Barnet
Do you cover New Barnet and nearby?
Yes. We cover New Barnet and nearby places including East Barnet, Barnet, Cockfosters and Hadley Wood. Send your postcode and we will confirm.
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.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
What is the price of a PIV unit in New Barnet?
Guide prices for New Barnet use London rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £950 to £1,675 inc VAT per home. We confirm a fixed price in writing before any work starts.
Is the survey free in New Barnet?
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.
Send a photo of your loft hatch area and landing ceiling for a quicker New Barnet quote.
PIV near New Barnet
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