East Sheen, Greater London
Positive input ventilation (PIV) in East Sheen
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering East Sheen and SW13, SW14 and TW9.
- From £950 inc VAT per home
- Free survey
PIV is often a good fix for East Sheen homes with condensation on every window.
Whether the property is in the middle of East Sheen 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 East Sheen at a glance
- Town
- East Sheen, Greater London
- Postcode districts
- SW13, SW14 and TW9
- Nearby
- Mortlake (under a mile), Barnes (1 mile) and Roehampton (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for East Sheen homes
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.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in East Sheen
| 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 |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 East Sheen
Is the survey free in East Sheen?
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 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.
Does PIV really stop condensation?
PIV reduces condensation in most homes because it dilutes moist air and keeps it moving, but it works best alongside working extract fans in the kitchen and bathroom. Leaks, rising damp or a cold bridge need fixing separately.
How do I get a price for a PIV unit in East Sheen?
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 East Sheen do you work in?
All of Greater London. Near East Sheen that includes Mortlake, Barnes, Roehampton and Kew.
Get a PIV guide price for your East Sheen home online, then confirm it on a free survey.
PIV near East Sheen
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