Palmers Green, Greater London
Positive input ventilation (PIV) in Palmers Green
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Palmers Green and N11, N13 and N22.
- From £950 inc VAT per home
- Free survey
For a typical Palmers Green semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
For positive input ventilation (PIV) in Palmers Green, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
PIV in Palmers Green at a glance
- Town
- Palmers Green, Greater London
- Postcode districts
- N11, N13 and N22
- Nearby
- Southgate (under a mile), Wood Green (1 mile) and Tottenham (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Palmers Green
Many units have a temperature sensor that reduces the flow or switches to a heater module on cold days, so the incoming air does not feel like a draught. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
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 Palmers Green
| 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.
When to get it looked at
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 Palmers Green
Is the survey free in Palmers Green?
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 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.
How do I get a price for a PIV unit in Palmers Green?
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.
What area around Palmers Green do you work in?
All of Greater London. Near Palmers Green that includes Southgate, Wood Green, Tottenham and Friern Barnet.
Most Palmers Green PIV jobs are done in half a day, so ask about the next available date.
PIV near Palmers Green
More services in Palmers Green
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.