Balham, Greater London
Positive input ventilation (PIV) in Balham
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Balham and SW4, SW11 and SW12.
- From £950 inc VAT per home
- Free survey
PIV can suit Balham houses and flats because it treats the whole home from one quiet unit.
We cover Balham and the surrounding SW4, SW11 and SW12 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 Balham at a glance
- Town
- Balham, Greater London
- Postcode districts
- SW4, SW11 and SW12
- Nearby
- Brixton Hill (1 mile), Latchmere (2 miles) and Earlsfield (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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 Balham
| 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
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Balham
How do I get a price for a PIV unit in Balham?
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 Balham do you work in?
All of Greater London. Near Balham that includes Brixton Hill, Latchmere, Earlsfield and Streatham.
Do you cover Balham and nearby?
Yes. We cover Balham and nearby places including Brixton Hill, Latchmere, Earlsfield and Streatham. Send your postcode and we will confirm.
Get a PIV guide price for your Balham home online, then confirm it on a free survey.
PIV near Balham
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.