Norris Green, Merseyside
Positive input ventilation (PIV) in Norris Green
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Norris Green and L9, L11 and L12.
- From £750 inc VAT per home
- Free survey
PIV can suit Norris Green houses and flats because it treats the whole home from one quiet unit.
Whether the property is in the middle of Norris Green or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Norris Green at a glance
- Town
- Norris Green, Merseyside
- Postcode districts
- L9, L11 and L12
- Nearby
- Croxteth (1 mile), West Derby (1 mile) and Fazakerley (1 mile)
- Price region
- North West
- Survey
- Free survey (UK mainland)
PIV for Norris Green homes
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.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Norris Green
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £750–£1,325 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £950–£1,600 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £140–£280 inc VAT |
North West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
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 England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Norris Green
Is the survey free in Norris Green?
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.
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.
How do I get a price for a PIV unit in Norris Green?
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 Norris Green do you work in?
All of Merseyside. Near Norris Green that includes Croxteth, West Derby, Fazakerley and Old Swan.
Send a photo of your loft hatch area and landing ceiling for a quicker Norris Green quote.
PIV near Norris Green
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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.