Walton-on-Thames, Surrey
Positive input ventilation (PIV) in Walton-on-Thames
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Walton-on-Thames and KT12, TW16 and TW17.
- From £875 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Walton-on-Thames, after checking the house first.
For positive input ventilation (PIV) in Walton-on-Thames, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
PIV in Walton-on-Thames at a glance
- Town
- Walton-on-Thames, Surrey
- Postcode districts
- KT12, TW16 and TW17
- Nearby
- Sunbury-on-Thames (1 mile), Shepperton (2 miles) and West Molesey (2 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach PIV in Walton-on-Thames
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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Walton-on-Thames
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,100–£1,875 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £160–£325 inc VAT |
Guide prices using South East 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
- 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
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 Walton-on-Thames
How do I get a price for a PIV unit in Walton-on-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.
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.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
What area around Walton-on-Thames do you work in?
All of Surrey. Near Walton-on-Thames that includes Sunbury-on-Thames, Shepperton, West Molesey and Weybridge.
Do you cover Walton-on-Thames and nearby?
Yes. We cover Walton-on-Thames and nearby places including Sunbury-on-Thames, Shepperton, West Molesey and Weybridge. Send your postcode and we will confirm.
Send a photo of your loft hatch area and landing ceiling for a quicker Walton-on-Thames quote.
PIV near Walton-on-Thames
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