Farnworth, Greater Manchester
Positive input ventilation (PIV) in Farnworth
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Farnworth and BL3, BL4 and M38.
- From £750 inc VAT per home
- Free survey
PIV can suit Farnworth houses and flats because it treats the whole home from one quiet unit.
Whether the property is in the middle of Farnworth 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 Farnworth at a glance
- Town
- Farnworth, Greater Manchester
- Postcode districts
- BL3, BL4 and M38
- Nearby
- Little Lever (1 mile), Kearsley (1 mile) and Little Hulton (1 mile)
- Price region
- North West
- Survey
- Free survey (UK mainland)
What the work involves
Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole. PIV works well in houses and flats with general condensation on windows and cold walls.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Farnworth
| 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 |
These ranges use our North West rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
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. 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 Farnworth
What area around Farnworth do you work in?
All of Greater Manchester. Near Farnworth that includes Little Lever, Kearsley, Little Hulton and Walkden.
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.
Do you cover Farnworth and nearby?
Yes. We cover Farnworth and nearby places including Little Lever, Kearsley, Little Hulton and Walkden. Send your postcode and we will confirm.
What is the price of a PIV unit in Farnworth?
Guide prices for Farnworth use North West rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £750 to £1,325 inc VAT per home. We confirm a fixed price in writing before any work starts.
Book a free Farnworth survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Farnworth
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