Cranford, Greater London
Positive input ventilation (PIV) in Cranford
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Cranford and TW4, TW5 and TW6.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Cranford, after checking the house first.
Whether the property is in the middle of Cranford or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Cranford at a glance
- Town
- Cranford, Greater London
- Postcode districts
- TW4, TW5 and TW6
- Nearby
- Heston (2 miles), Feltham (2 miles) and Hounslow (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Cranford
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.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Cranford
| 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
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 Cranford
Do you cover Cranford and nearby?
Yes. We cover Cranford and nearby places including Heston, Feltham, Hounslow and Osterley. Send your postcode and we will confirm.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
How much does PIV cost to install?
A loft-mounted PIV unit usually costs £795 to £1,395 including VAT supplied and fitted, and £995 to £1,695 for a wall-mounted unit in a flat. A heater module adds around £145 to £295.
What is the price of a PIV unit in Cranford?
Guide prices for Cranford 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.
Is the survey free in Cranford?
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.
Get a PIV guide price for your Cranford home online, then confirm it on a free survey.
PIV near Cranford
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