Amersham, Buckinghamshire
Positive input ventilation (PIV) in Amersham
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Amersham and HP6, HP7 and HP8.
- From £875 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Amersham, after checking the house first.
Whether the property is in the middle of Amersham 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 Amersham at a glance
- Town
- Amersham, Buckinghamshire
- Postcode districts
- HP6, HP7 and HP8
- Nearby
- Amersham on the Hill (1 mile), Chesham (2 miles) and Beaconsfield (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Amersham 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 Amersham
| 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 |
These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Common reasons people call
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Amersham
What area around Amersham do you work in?
All of Buckinghamshire. Near Amersham that includes Amersham on the Hill, Chesham, Beaconsfield and Chorleywood.
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 Amersham and nearby?
Yes. We cover Amersham and nearby places including Amersham on the Hill, Chesham, Beaconsfield and Chorleywood. Send your postcode and we will confirm.
What is the price of a PIV unit in Amersham?
Guide prices for Amersham use South East rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £875 to £1,525 inc VAT per home. We confirm a fixed price in writing before any work starts.
Get a PIV guide price for your Amersham home online, then confirm it on a free survey.
PIV near Amersham
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