Osterley, Greater London
Positive input ventilation (PIV) in Osterley
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Osterley and TW3, TW5 and TW7.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Osterley, after checking the house first.
Osterley is about 99 miles from our base in Great Barr, Birmingham. We book Osterley visits by appointment and confirm the date in writing. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Osterley at a glance
- Town
- Osterley, Greater London
- Postcode districts
- TW3, TW5 and TW7
- Nearby
- Isleworth (1 mile), Hounslow (1 mile) and Heston (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Osterley
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.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Osterley
| 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
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
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 Osterley
Is the survey free in Osterley?
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.
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.
How do I get a price for a PIV unit in Osterley?
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 Osterley do you work in?
All of Greater London. Near Osterley that includes Isleworth, Hounslow, Heston and Brentford.
Get a PIV guide price for your Osterley home online, then confirm it on a free survey.
PIV near Osterley
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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.