Leytonstone, Greater London
Positive input ventilation (PIV) in Leytonstone
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Leytonstone and E10, E11 and E17.
- From £950 inc VAT per home
- Free survey

Condensation in Leytonstone homes usually has one of two answers: better extract fans, or PIV as well.
Whether the property is in the middle of Leytonstone 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 Leytonstone at a glance
- Town
- Leytonstone, Greater London
- Postcode districts
- E10, E11 and E17
- Nearby
- Leyton (1 mile), Wanstead (1 mile) and Snaresbrook (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Leytonstone
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.
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 Leytonstone
| 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
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
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 Leytonstone
How do I get a price for a PIV unit in Leytonstone?
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.
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 area around Leytonstone do you work in?
All of Greater London. Near Leytonstone that includes Leyton, Wanstead, Snaresbrook and Walthamstow.
Do you cover Leytonstone and nearby?
Yes. We cover Leytonstone and nearby places including Leyton, Wanstead, Snaresbrook and Walthamstow. Send your postcode and we will confirm.
Most Leytonstone PIV jobs are done in half a day, so ask about the next available date.
PIV near Leytonstone
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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.