Paisley, Renfrewshire and Inverclyde
Positive input ventilation (PIV) in Paisley
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Paisley and PA1, PA2 and PA3.
- From £775 inc VAT per home
- Free survey
Condensation in Paisley homes usually has one of two answers: better extract fans, or PIV as well.
Customers in Paisley can get a guide price online in a couple of minutes. It uses Scotland rates, which is what we would charge for the same job anywhere in Renfrewshire and Inverclyde. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Paisley at a glance
- Town
- Paisley, Renfrewshire and Inverclyde
- Postcode districts
- PA1, PA2 and PA3
- Nearby
- Barrhead (3 miles), Renfrew (3 miles) and Johnstone (3 miles)
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
PIV for Paisley homes
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.
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 Paisley
| 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.
When to get it looked at
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
Rules that apply in Scotland
In Scotland, ventilation is covered by the Building (Scotland) Regulations and section 3 of the Technical Handbooks, and most building work needs a building warrant first. We work to the Scottish ventilation standards and record the airflow achieved.
Questions from Paisley
What area around Paisley do you work in?
All of Renfrewshire and Inverclyde. Near Paisley that includes Barrhead, Renfrew, Johnstone and Erskine.
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.
Do you cover Paisley and nearby?
Yes. We cover Paisley and nearby places including Barrhead, Renfrew, Johnstone and Erskine. Send your postcode and we will confirm.
What is the price of a PIV unit in Paisley?
Guide prices for Paisley 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.
Most Paisley PIV jobs are done in half a day, so ask about the next available date.
PIV near Paisley
More services in Paisley
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.