Northumberland Park, Greater London
Positive input ventilation (PIV) in Northumberland Park
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Northumberland Park and N9, N17 and N18.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Northumberland Park, after checking the house first.
Customers in Northumberland Park can get a guide price online in a couple of minutes. It uses London rates, which is what we would charge for the same job anywhere in Greater London. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Northumberland Park at a glance
- Town
- Northumberland Park, Greater London
- Postcode districts
- N9, N17 and N18
- Nearby
- Tottenham (under a mile), Tottenham Hale (1 mile) and Edmonton (2 miles)
- 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.
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 Northumberland Park
| 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.
Common reasons people call
- 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). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Northumberland Park
Do you cover Northumberland Park and nearby?
Yes. We cover Northumberland Park and nearby places including Tottenham, Tottenham Hale, Edmonton and Walthamstow. Send your postcode and we will confirm.
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 is the price of a PIV unit in Northumberland Park?
Guide prices for Northumberland Park 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 Northumberland Park?
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.
Most Northumberland Park PIV jobs are done in half a day, so ask about the next available date.
PIV near Northumberland Park
More services in Northumberland Park
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.