Johnstone, Renfrewshire and Inverclyde
Positive input ventilation (PIV) in Johnstone
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Johnstone and PA5, PA9 and PA10.
- From £775 inc VAT per home
- Free survey
PIV is often a good fix for Johnstone homes with condensation on every window.
Customers in Johnstone 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. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Johnstone at a glance
- Town
- Johnstone, Renfrewshire and Inverclyde
- Postcode districts
- PA5, PA9 and PA10
- Nearby
- Paisley (3 miles), Barrhead (5 miles) and Erskine (6 miles)
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
PIV for Johnstone homes
Many units have a temperature sensor that reduces the flow or switches to a heater module on cold days, so the incoming air does not feel like a draught. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
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 Johnstone
| 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.
Signs it is time to call us
- 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 Johnstone
How do I get a price for a PIV unit in Johnstone?
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.
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 area around Johnstone do you work in?
All of Renfrewshire and Inverclyde. Near Johnstone that includes Paisley, Barrhead, Erskine and Renfrew.
Do you cover Johnstone and nearby?
Yes. We cover Johnstone and nearby places including Paisley, Barrhead, Erskine and Renfrew. Send your postcode and we will confirm.
Send a photo of your loft hatch area and landing ceiling for a quicker Johnstone quote.
PIV near Johnstone
More services in Johnstone
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.