Streatham, Greater London
Positive input ventilation (PIV) in Streatham
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Streatham and SE27, SW12 and SW16.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Streatham, after checking the house first.
We cover Streatham and the surrounding SE27, SW12 and SW16 postcodes as part of our work across Greater London. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Streatham at a glance
- Town
- Streatham, Greater London
- Postcode districts
- SE27, SW12 and SW16
- Nearby
- Furzedown (1 mile), Norbury (1 mile) and Tooting (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Streatham
| 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 |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- 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
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Streatham
What area around Streatham do you work in?
All of Greater London. Near Streatham that includes Furzedown, Norbury, Tooting and Brixton Hill.
How much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
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.
Do you cover Streatham and nearby?
Yes. We cover Streatham and nearby places including Furzedown, Norbury, Tooting and Brixton Hill. Send your postcode and we will confirm.
What is the price of a PIV unit in Streatham?
Guide prices for Streatham 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 Streatham quote.
PIV near Streatham
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