Shirley, Greater London
Positive input ventilation (PIV) in Shirley (Greater London)
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Shirley and CR0, CR9 and SE25.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Shirley, after checking the house first.
Whether the property is in the middle of Shirley 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 Shirley at a glance
- Town
- Shirley, Greater London
- Postcode districts
- CR0, CR9 and SE25
- Nearby
- West Wickham (2 miles), South Norwood (2 miles) and South Croydon (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Shirley
| 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
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
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 Shirley
What area around Shirley do you work in?
All of Greater London. Near Shirley that includes West Wickham, South Norwood, South Croydon and Croydon.
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.
Do you cover Shirley and nearby?
Yes. We cover Shirley and nearby places including West Wickham, South Norwood, South Croydon and Croydon. Send your postcode and we will confirm.
What is the price of a PIV unit in Shirley?
Guide prices for Shirley 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.
Most Shirley PIV jobs are done in half a day, so ask about the next available date.
PIV near Shirley
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