Crowborough, East Sussex
Positive input ventilation (PIV) in Crowborough
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Crowborough and TN6, TN7 and TN20.
- From £875 inc VAT per home
- Free survey

For a typical Crowborough semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Customers in Crowborough can get a guide price online in a couple of minutes. It uses South East rates, which is what we would charge for the same job anywhere in East Sussex. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Crowborough at a glance
- Town
- Crowborough, East Sussex
- Postcode districts
- TN6, TN7 and TN20
- Nearby
- Royal Tunbridge Wells (7 miles), Uckfield (7 miles) and East Grinstead (8 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach PIV in Crowborough
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 Crowborough
| 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.
When to get it looked at
- 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
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 Crowborough
What area around Crowborough do you work in?
All of East Sussex. Near Crowborough that includes Royal Tunbridge Wells, Uckfield, East Grinstead and Tonbridge.
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.
Does PIV really stop condensation?
PIV reduces condensation in most homes because it dilutes moist air and keeps it moving, but it works best alongside working extract fans in the kitchen and bathroom. Leaks, rising damp or a cold bridge need fixing separately.
Do you cover Crowborough and nearby?
Yes. We cover Crowborough and nearby places including Royal Tunbridge Wells, Uckfield, East Grinstead and Tonbridge. Send your postcode and we will confirm.
What is the price of a PIV unit in Crowborough?
Guide prices for Crowborough 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 Crowborough home online, then confirm it on a free survey.
PIV near Crowborough
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