Putney, Greater London
Positive input ventilation (PIV) in Putney
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Putney and SW6, SW15 and SW18.
- From £950 inc VAT per home
- Free survey
If your Putney flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Customers in Putney 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. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Putney at a glance
- Town
- Putney, Greater London
- Postcode districts
- SW6, SW15 and SW18
- Nearby
- Roehampton (1 mile), Barnes (2 miles) and Fulham (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Putney
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 Putney
| 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.
Signs it is time to call us
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Putney
How do I get a price for a PIV unit in Putney?
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.
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 area around Putney do you work in?
All of Greater London. Near Putney that includes Roehampton, Barnes, Fulham and Earlsfield.
Do you cover Putney and nearby?
Yes. We cover Putney and nearby places including Roehampton, Barnes, Fulham and Earlsfield. Send your postcode and we will confirm.
Book a free Putney survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Putney
More services in Putney
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.