Greenford, Greater London
Positive input ventilation (PIV) in Greenford
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Greenford and UB1, UB5 and UB6.
- From £950 inc VAT per home
- Free survey
If your Greenford flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Work in Greenford follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Greenford at a glance
- Town
- Greenford, Greater London
- Postcode districts
- UB1, UB5 and UB6
- Nearby
- Northolt (2 miles), Southall (2 miles) and West Ealing (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Greenford 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.
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 Greenford
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,200–£2,025 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £175–£355 inc VAT |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
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 England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Greenford
How do I get a price for a PIV unit in Greenford?
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.
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.
What area around Greenford do you work in?
All of Greater London. Near Greenford that includes Northolt, Southall, West Ealing and Sudbury.
Do you cover Greenford and nearby?
Yes. We cover Greenford and nearby places including Northolt, Southall, West Ealing and Sudbury. Send your postcode and we will confirm.
Send a photo of your loft hatch area and landing ceiling for a quicker Greenford quote.
PIV near Greenford
More services in Greenford
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.