New Cross, Greater London
Positive input ventilation (PIV) in New Cross
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering New Cross and SE4, SE8 and SE14.
- From £950 inc VAT per home
- Free survey
If your New Cross flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Customers in New Cross 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. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in New Cross at a glance
- Town
- New Cross, Greater London
- Postcode districts
- SE4, SE8 and SE14
- Nearby
- Brockley (1 mile), Greenwich (1 mile) and Peckham (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for New Cross homes
Loft air is usually a little warmer and drier than outside air, and the unit filters it before it comes down into the house. Many units have a temperature sensor that reduces the flow or switches to a heater module on cold days, so the incoming air does not feel like a draught.
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 New Cross
| 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.
Signs it is time to call us
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 New Cross
Is the survey free in New Cross?
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.
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 much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
How do I get a price for a PIV unit in New Cross?
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 New Cross do you work in?
All of Greater London. Near New Cross that includes Brockley, Greenwich, Peckham and Ladywell.
Get a PIV guide price for your New Cross home online, then confirm it on a free survey.
PIV near New Cross
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Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.