Falmouth, Cornwall
Positive input ventilation (PIV) in Falmouth
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Falmouth and TR3, TR10 and TR11.
- From £825 inc VAT per home
- Free survey

If your Falmouth flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Customers in Falmouth can get a guide price online in a couple of minutes. It uses South West rates, which is what we would charge for the same job anywhere in Cornwall. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Falmouth at a glance
- Town
- Falmouth, Cornwall
- Postcode districts
- TR3, TR10 and TR11
- Nearby
- Truro (8 miles), Redruth (9 miles) and Helston (10 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
PIV for Falmouth 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.
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 Falmouth
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,450 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,025–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£305 inc VAT |
South West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- 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
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 Falmouth
Is the survey free in Falmouth?
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.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
How do I get a price for a PIV unit in Falmouth?
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 Falmouth do you work in?
All of Cornwall. Near Falmouth that includes Truro, Redruth, Helston and Camborne.
We will check the existing fans in your Falmouth home at the same visit, because PIV works best with them working.
PIV near Falmouth
More services in Falmouth
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.