Surbiton, Greater London
Positive input ventilation (PIV) in Surbiton
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Surbiton and KT1, KT5 and KT6.
- From £950 inc VAT per home
- Free survey
If your Surbiton flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Surbiton is about 106 miles from our base in Great Barr, Birmingham. We book Surbiton visits by appointment and confirm the date in writing. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Surbiton at a glance
- Town
- Surbiton, Greater London
- Postcode districts
- KT1, KT5 and KT6
- Nearby
- Kingston upon Thames (2 miles), Norbiton (2 miles) and Hook (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Surbiton 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.
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 Surbiton
| 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.
Signs it is time to call us
- 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
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Surbiton
What area around Surbiton do you work in?
All of Greater London. Near Surbiton that includes Kingston upon Thames, Norbiton, Hook and New Malden.
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.
Do you cover Surbiton and nearby?
Yes. We cover Surbiton and nearby places including Kingston upon Thames, Norbiton, Hook and New Malden. Send your postcode and we will confirm.
What is the price of a PIV unit in Surbiton?
Guide prices for Surbiton use London rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £950 to £1,675 inc VAT per home. We confirm a fixed price in writing before any work starts.
Send a photo of your loft hatch area and landing ceiling for a quicker Surbiton quote.
PIV near Surbiton
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