Upper Norwood, Greater London
Positive input ventilation (PIV) in Upper Norwood
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Upper Norwood and CR7, SE19 and SE27.
- From £950 inc VAT per home
- Free survey
Condensation in Upper Norwood homes usually has one of two answers: better extract fans, or PIV as well.
Customers in Upper Norwood 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. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Upper Norwood at a glance
- Town
- Upper Norwood, Greater London
- Postcode districts
- CR7, SE19 and SE27
- Nearby
- Crystal Palace (1 mile), Gipsy Hill (1 mile) and Norbury (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.
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 Upper Norwood
| 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.
When to get it looked at
- 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
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Upper Norwood
Is the survey free in Upper Norwood?
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.
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.
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 do I get a price for a PIV unit in Upper Norwood?
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 Upper Norwood do you work in?
All of Greater London. Near Upper Norwood that includes Crystal Palace, Gipsy Hill, Norbury and Thornton Heath.
Book a free Upper Norwood survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Upper Norwood
More services in Upper Norwood
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.