Hampton Wick, Greater London
Positive input ventilation (PIV) in Hampton Wick
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Hampton Wick and KT1, KT2 and TW11.
- From £950 inc VAT per home
- Free survey
For a typical Hampton Wick semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Customers in Hampton Wick 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. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Hampton Wick at a glance
- Town
- Hampton Wick, Greater London
- Postcode districts
- KT1, KT2 and TW11
- Nearby
- Kingston upon Thames (1 mile), Norbiton (1 mile) and East Molesey (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Hampton Wick homes
It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.
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 Hampton Wick
| 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.
When to get it looked at
- 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. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Hampton Wick
What area around Hampton Wick do you work in?
All of Greater London. Near Hampton Wick that includes Kingston upon Thames, Norbiton, East Molesey and Surbiton.
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.
Do you cover Hampton Wick and nearby?
Yes. We cover Hampton Wick and nearby places including Kingston upon Thames, Norbiton, East Molesey and Surbiton. Send your postcode and we will confirm.
What is the price of a PIV unit in Hampton Wick?
Guide prices for Hampton Wick 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.
Book a free Hampton Wick survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Hampton Wick
More services in Hampton Wick
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.