Kenley, Greater London
Positive input ventilation (PIV) in Kenley
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Kenley and CR2, CR5 and CR8.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Kenley, after checking the house first.
For positive input ventilation (PIV) in Kenley, 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 Kenley at a glance
- Town
- Kenley, Greater London
- Postcode districts
- CR2, CR5 and CR8
- Nearby
- Purley (1 mile), Sanderstead (1 mile) and Coulsdon (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Kenley
| 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 |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
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 Kenley
How do I get a price for a PIV unit in Kenley?
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 long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
How much does PIV cost to install?
A loft-mounted PIV unit usually costs £795 to £1,395 including VAT supplied and fitted, and £995 to £1,695 for a wall-mounted unit in a flat. A heater module adds around £145 to £295.
What area around Kenley do you work in?
All of Greater London. Near Kenley that includes Purley, Sanderstead, Coulsdon and South Croydon.
Do you cover Kenley and nearby?
Yes. We cover Kenley and nearby places including Purley, Sanderstead, Coulsdon and South Croydon. Send your postcode and we will confirm.
We will check the existing fans in your Kenley home at the same visit, because PIV works best with them working.
PIV near Kenley
More services in Kenley
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.