Didcot, Oxfordshire
Positive input ventilation (PIV) in Didcot
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Didcot and OX10, OX11 and OX14.
- From £875 inc VAT per home
- Free survey
Condensation in Didcot homes usually has one of two answers: better extract fans, or PIV as well.
Customers in Didcot 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 Oxfordshire. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Didcot at a glance
- Town
- Didcot, Oxfordshire
- Postcode districts
- OX10, OX11 and OX14
- Nearby
- Abingdon (5 miles), Wallingford (5 miles) and Wantage (8 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Didcot homes
Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole. PIV works well in houses and flats with general condensation on windows and cold walls.
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 Didcot
| 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
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
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 Didcot
What is the price of a PIV unit in Didcot?
Guide prices for Didcot 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.
How much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
Is the survey free in Didcot?
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.
How do I get a price for a PIV unit in Didcot?
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.
Get a PIV guide price for your Didcot home online, then confirm it on a free survey.
PIV near Didcot
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