Islington, Greater London
Positive input ventilation (PIV) in Islington
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Islington and EC1, EC1A, EC1M and EC1R.
- From £950 inc VAT per home
- Free survey
PIV can suit Islington houses and flats because it treats the whole home from one quiet unit.
Islington is about 104 miles from our base in Great Barr, Birmingham. We book Islington 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 Islington at a glance
- Town
- Islington, Greater London
- Postcode districts
- EC1, EC1A, EC1M, EC1R and EC1V
- Nearby
- Barnsbury (1 mile), Canonbury (1 mile) and King's Cross (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Islington
It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.
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 Islington
| 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 |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
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 Islington
Is the survey free in Islington?
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.
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.
How do I get a price for a PIV unit in Islington?
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 Islington do you work in?
All of Greater London. Near Islington that includes Barnsbury, Canonbury, King's Cross and Highbury.
Get a PIV guide price for your Islington home online, then confirm it on a free survey.
PIV near Islington
More services in Islington
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.