Rosyth, Fife
Positive input ventilation (PIV) in Rosyth
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Rosyth and EH30, KY11 and KY12.
- From £775 inc VAT per home
- Free survey

PIV can suit Rosyth houses and flats because it treats the whole home from one quiet unit.
We cover Rosyth and the surrounding EH30, KY11 and KY12 postcodes as part of our work across Fife. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Rosyth at a glance
- Town
- Rosyth, Fife
- Postcode districts
- EH30, KY11 and KY12
- Nearby
- Dunfermline (2 miles), Cowdenbeath (6 miles) and Bo’ness (7 miles)
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
PIV for Rosyth 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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Rosyth
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £775–£1,350 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £950–£1,625 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £140–£285 inc VAT |
These ranges use our Scotland rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Common reasons people call
- 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 Scotland
Scottish projects follow the Technical Handbooks (section 3, Environment) under the Building (Scotland) Regulations, usually with a building warrant. Extract and whole-home rates are designed to the Scottish standards and measured at handover.
Questions from Rosyth
Is the survey free in Rosyth?
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.
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.
How do I get a price for a PIV unit in Rosyth?
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 Rosyth do you work in?
All of Fife. Near Rosyth that includes Dunfermline, Cowdenbeath, Bo’ness and Broxburn.
We will check the existing fans in your Rosyth home at the same visit, because PIV works best with them working.
PIV near Rosyth
More services in Rosyth
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.