Norbiton, Greater London
Positive input ventilation (PIV) in Norbiton
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Norbiton and KT1, KT2 and KT5.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Norbiton, after checking the house first.
Work in Norbiton follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Norbiton at a glance
- Town
- Norbiton, Greater London
- Postcode districts
- KT1, KT2 and KT5
- Nearby
- Kingston upon Thames (1 mile), New Malden (1 mile) and Hampton Wick (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Norbiton 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.
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 Norbiton
| 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.
Common reasons people call
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
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 Norbiton
How do I get a price for a PIV unit in Norbiton?
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 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.
What area around Norbiton do you work in?
All of Greater London. Near Norbiton that includes Kingston upon Thames, New Malden, Hampton Wick and Surbiton.
Do you cover Norbiton and nearby?
Yes. We cover Norbiton and nearby places including Kingston upon Thames, New Malden, Hampton Wick and Surbiton. Send your postcode and we will confirm.
We will check the existing fans in your Norbiton home at the same visit, because PIV works best with them working.
PIV near Norbiton
More services in Norbiton
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.