Tavistock, Devon
Positive input ventilation (PIV) in Tavistock
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Tavistock and PL18, PL19 and PL20.
- From £825 inc VAT per home
- Free survey
PIV is often a good fix for Tavistock homes with condensation on every window.
We cover Tavistock and the surrounding PL18, PL19 and PL20 postcodes as part of our work across Devon. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Tavistock at a glance
- Town
- Tavistock, Devon
- Postcode districts
- PL18, PL19 and PL20
- Nearby
- Saltash (10 miles), Plymouth (12 miles) and Plymstock (13 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
PIV for Tavistock 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 Tavistock
| 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 |
Guide prices using South West 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
- 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). 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 Tavistock
What is the price of a PIV unit in Tavistock?
Guide prices for Tavistock use South West rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £825 to £1,450 inc VAT per home. We confirm a fixed price in writing before any work starts.
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.
Is the survey free in Tavistock?
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 Tavistock?
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.
Tell us whether your Tavistock home has a loft and we can price a PIV unit before visiting.
PIV near Tavistock
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