Canonbury, Greater London
Positive input ventilation (PIV) in Canonbury
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Canonbury and E8, N1 and N5.
- From £950 inc VAT per home
- Free survey
PIV can suit Canonbury houses and flats because it treats the whole home from one quiet unit.
Canonbury is about 104 miles from our base in Great Barr, Birmingham. We book Canonbury 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 Canonbury at a glance
- Town
- Canonbury, Greater London
- Postcode districts
- E8, N1 and N5
- Nearby
- Highbury (1 mile), Islington (1 mile) and Barnsbury (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Canonbury homes
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 Canonbury
| 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. 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 Canonbury
Do you cover Canonbury and nearby?
Yes. We cover Canonbury and nearby places including Highbury, Islington, Barnsbury and Holloway. Send your postcode and we will confirm.
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 is the price of a PIV unit in Canonbury?
Guide prices for Canonbury 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 Canonbury?
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 Canonbury quote.
PIV near Canonbury
More services in Canonbury
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.