Thatcham, Berkshire
Positive input ventilation (PIV) in Thatcham
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Thatcham and RG14, RG18 and RG19.
- From £875 inc VAT per home
- Free survey

For a typical Thatcham semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Customers in Thatcham 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 Berkshire. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Thatcham at a glance
- Town
- Thatcham, Berkshire
- Postcode districts
- RG14, RG18 and RG19
- Nearby
- Newbury (3 miles), Tadley (7 miles) and Basingstoke (12 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Thatcham 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.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Thatcham
| 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
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 Thatcham
Is the survey free in Thatcham?
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 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.
How do I get a price for a PIV unit in Thatcham?
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.
What area around Thatcham do you work in?
All of Berkshire. Near Thatcham that includes Newbury, Tadley, Basingstoke and Reading.
Tell us whether your Thatcham home has a loft and we can price a PIV unit before visiting.
PIV near Thatcham
More services in Thatcham
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.