Bognor Regis, West Sussex
Positive input ventilation (PIV) in Bognor Regis
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Bognor Regis and PO20, PO21 and PO22.
- From £875 inc VAT per home
- Free survey

Condensation in Bognor Regis homes usually has one of two answers: better extract fans, or PIV as well.
We cover Bognor Regis and the surrounding PO20, PO21 and PO22 postcodes as part of our work across West Sussex. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Bognor Regis at a glance
- Town
- Bognor Regis, West Sussex
- Postcode districts
- PO20, PO21 and PO22
- Nearby
- Barnham (4 miles), Chichester (6 miles) and Selsey (6 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach PIV in Bognor Regis
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.
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 Bognor Regis
| 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 |
Guide prices using South East 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
- 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 Bognor Regis
Do you cover Bognor Regis and nearby?
Yes. We cover Bognor Regis and nearby places including Barnham, Chichester, Selsey and Littlehampton. Send your postcode and we will confirm.
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.
What is the price of a PIV unit in Bognor Regis?
Guide prices for Bognor Regis 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.
Is the survey free in Bognor Regis?
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.
We will check the existing fans in your Bognor Regis home at the same visit, because PIV works best with them working.
PIV near Bognor Regis
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