Epsom, Surrey
Positive input ventilation (PIV) in Epsom
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Epsom and KT17, KT18 and KT19.
- From £875 inc VAT per home
- Free survey
PIV is often a good fix for Epsom homes with condensation on every window.
We cover Epsom and the surrounding KT17, KT18 and KT19 postcodes as part of our work across Surrey. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Epsom at a glance
- Town
- Epsom, Surrey
- Postcode districts
- KT17, KT18 and KT19
- Nearby
- Ewell (2 miles), Ashtead (2 miles) and Chessington (3 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Epsom homes
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 Epsom
| 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.
Signs it is time to call us
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
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 Epsom
What area around Epsom do you work in?
All of Surrey. Near Epsom that includes Ewell, Ashtead, Chessington and Banstead.
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 Epsom and nearby?
Yes. We cover Epsom and nearby places including Ewell, Ashtead, Chessington and Banstead. Send your postcode and we will confirm.
What is the price of a PIV unit in Epsom?
Guide prices for Epsom 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.
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PIV near Epsom
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