Positive input ventilation (PIV) in Furzedown

PIV can suit Furzedown houses and flats because it treats the whole home from one quiet unit.

Work in Furzedown follows the rules for England and finishes with a written record of what was fitted and how it was set up.

PIV in Furzedown at a glance

Town: Furzedown, Greater London
Postcode districts: SW12, SW16 and SW17
Nearby: Streatham (1 mile), Tooting (1 mile) and Norbury (1 mile)
Price region: London
Survey: Free survey (UK mainland)

PIV for Furzedown homes

PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.

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 Furzedown

Positive input ventilation (PIV) guide prices in Furzedown
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 Furzedown

What area around Furzedown do you work in?

All of Greater London. Near Furzedown that includes Streatham, Tooting, Norbury and Balham.

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.

Do you cover Furzedown and nearby?

Yes. We cover Furzedown and nearby places including Streatham, Tooting, Norbury and Balham. Send your postcode and we will confirm.

What is the price of a PIV unit in Furzedown?

Guide prices for Furzedown 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.

Send a photo of your loft hatch area and landing ceiling for a quicker Furzedown quote.