Kingston upon Thames, Greater London
Positive input ventilation (PIV) in Kingston upon Thames
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Kingston upon Thames and KT1, KT2, KT3 and KT5.
- From £950 inc VAT per home
- Free survey
PIV can suit Kingston upon Thames houses and flats because it treats the whole home from one quiet unit.
Whether the property is in the middle of Kingston upon Thames 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 Kingston upon Thames at a glance
- Town
- Kingston upon Thames, Greater London
- Postcode districts
- KT1, KT2, KT3, KT5 and KT6
- Nearby
- Norbiton (1 mile), Hampton Wick (1 mile) and Surbiton (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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 Kingston upon Thames
| 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.
Common reasons people call
- 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 Kingston upon Thames
Is the survey free in Kingston upon Thames?
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.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
How do I get a price for a PIV unit in Kingston upon Thames?
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 Kingston upon Thames do you work in?
All of Greater London. Near Kingston upon Thames that includes Norbiton, Hampton Wick, Surbiton and New Malden.
Get a PIV guide price for your Kingston upon Thames home online, then confirm it on a free survey.
PIV near Kingston upon Thames
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