Croydon, Greater London
Positive input ventilation (PIV) in Croydon
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Croydon and CR0, CR2, CR5 and CR7.
- From £950 inc VAT per home
- Free survey
For a typical Croydon semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Whether the property is in the middle of Croydon 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 Croydon at a glance
- Town
- Croydon, Greater London
- Postcode districts
- CR0, CR2, CR5, CR7 and CR8
- Nearby
- Thornton Heath (1 mile), South Croydon (2 miles) and South Norwood (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Croydon
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. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
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 Croydon
| 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 |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- 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
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 Croydon
Do you cover Croydon and nearby?
Yes. We cover Croydon and nearby places including Thornton Heath, South Croydon, South Norwood and Shirley. Send your postcode and we will confirm.
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 is the price of a PIV unit in Croydon?
Guide prices for Croydon 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.
Is the survey free in Croydon?
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.
Tell us whether your Croydon home has a loft and we can price a PIV unit before visiting.
PIV near Croydon
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