Port Glasgow, Renfrewshire and Inverclyde
Positive input ventilation (PIV) in Port Glasgow
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Port Glasgow and PA13, PA14 and PA15.
- From £775 inc VAT per home
- Free survey

If your Port Glasgow flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Work in Port Glasgow follows the rules for Scotland and finishes with a written record of what was fitted and how it was set up.
PIV in Port Glasgow at a glance
- Town
- Port Glasgow, Renfrewshire and Inverclyde
- Postcode districts
- PA13, PA14 and PA15
- Nearby
- Greenock (3 miles), Dumbarton (5 miles) and Vale of Leven (5 miles)
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Port Glasgow
| 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 |
Guide prices using Scotland 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
- 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 Port Glasgow
Do you cover Port Glasgow and nearby?
Yes. We cover Port Glasgow and nearby places including Greenock, Dumbarton, Vale of Leven and Helensburgh. Send your postcode and we will confirm.
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.
What is the price of a PIV unit in Port Glasgow?
Guide prices for Port Glasgow use Scotland rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £775 to £1,350 inc VAT per home. We confirm a fixed price in writing before any work starts.
Is the survey free in Port Glasgow?
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.
Tell us whether your Port Glasgow home has a loft and we can price a PIV unit before visiting.
PIV near Port Glasgow
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.