Sittingbourne, Kent
Positive input ventilation (PIV) in Sittingbourne
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Sittingbourne and ME9, ME10 and ME12.
- From £875 inc VAT per home
- Free survey

For a typical Sittingbourne semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Sittingbourne is about 140 miles from our base in Great Barr, Birmingham. We book Sittingbourne visits by appointment and confirm the date in writing. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Sittingbourne at a glance
- Town
- Sittingbourne, Kent
- Postcode districts
- ME9, ME10 and ME12
- Nearby
- Faversham (7 miles), Sheerness (7 miles) and Gillingham (9 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach PIV in Sittingbourne
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in Sittingbourne
| 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.
When to get it looked at
- 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
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 Sittingbourne
What is the price of a PIV unit in Sittingbourne?
Guide prices for Sittingbourne 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.
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.
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.
Is the survey free in Sittingbourne?
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 Sittingbourne?
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 Sittingbourne home has a loft and we can price a PIV unit before visiting.
PIV near Sittingbourne
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