Thornton Heath, Greater London
Positive input ventilation (PIV) in Thornton Heath
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Thornton Heath and CR7, SE19 and SE25.
- From £950 inc VAT per home
- Free survey
For a typical Thornton Heath semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Customers in Thornton Heath 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 Thornton Heath at a glance
- Town
- Thornton Heath, Greater London
- Postcode districts
- CR7, SE19 and SE25
- Nearby
- South Norwood (1 mile), Croydon (1 mile) and Upper Norwood (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Thornton Heath
It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.
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 Thornton Heath
| 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 |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- 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
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 Thornton Heath
What is the price of a PIV unit in Thornton Heath?
Guide prices for Thornton Heath 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.
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.
Is the survey free in Thornton Heath?
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.
How do I get a price for a PIV unit in Thornton Heath?
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.
Tell us whether your Thornton Heath home has a loft and we can price a PIV unit before visiting.
PIV near Thornton Heath
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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.