Henley-on-Thames, Oxfordshire
Positive input ventilation (PIV) in Henley-on-Thames
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Henley-on-Thames and RG4, RG9 and RG10.
- From £875 inc VAT per home
- Free survey

PIV is often a good fix for Henley-on-Thames homes with condensation on every window.
We cover Henley-on-Thames and the surrounding RG4, RG9 and RG10 postcodes as part of our work across Oxfordshire. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Henley-on-Thames at a glance
- Town
- Henley-on-Thames, Oxfordshire
- Postcode districts
- RG4, RG9 and RG10
- Nearby
- Marlow (6 miles), Reading (6 miles) and Lower Earley (7 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Henley-on-Thames homes
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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Henley-on-Thames
| 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.
Signs it is time to call us
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
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 Henley-on-Thames
How do I get a price for a PIV unit in Henley-on-Thames?
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 Henley-on-Thames do you work in?
All of Oxfordshire. Near Henley-on-Thames that includes Marlow, Reading, Lower Earley and Maidenhead.
Do you cover Henley-on-Thames and nearby?
Yes. We cover Henley-on-Thames and nearby places including Marlow, Reading, Lower Earley and Maidenhead. Send your postcode and we will confirm.
Get a PIV guide price for your Henley-on-Thames home online, then confirm it on a free survey.
PIV near Henley-on-Thames
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